F-35 JSF

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Re: F-35 JSF
« Responder #375 em: Dezembro 13, 2012, 04:30:13 pm »
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Ottawa Officially Scraps F-35 Purchase As Audit Pegs F-35 Costs at $45 Billion

   

   
(Source: The Globe and Mail; published Dec. 12 2012)
 
 
   
   OTTAWA --- Stephen Harper’s Conservatives are officially recanting their 2 1/2-year-old decision to buy the cutting-edge F-35 fighter plane – but the federal government is still resisting calls to hold an open competition to pick Canada’s next jet purchase.

The Harper government on Wednesday officially announced it was backing off a sole-source plan to buy 65 F-35 Lightning jets as a replacement for Canada’s aging CF-18 Hornets. It was a rare U-turn for an administration that only infrequently acknowledges it was wrong – but one the Tories felt was necessary to repair their fiscal stewardship credentials.

“No decision has been taken on a replacement for the CF-18,” a senior government official told reporters in a not-for-attribution media briefing set up by the Tories so that top civil servants on the file could speak plainly about Ottawa’s new jet purchase policy.

The Conservatives have been dogged for months by a damning auditor general’s report last spring that said they selected the F-35 without due regard for price and availability. Back in July, 2010, the Tories announced to great fanfare they would forgo an open competition and would buy the Lockheed warplane because it was the only plane that would serve Canada’s needs. They defended the decision in the 2011 election and often excoriated critics who suggested they had made a mistake.

On Wednesday, Ottawa made a great show of backing away from that decision – while unveiling a full lifetime cost estimate for the Lockheed Martin plane that is five times greater than what the Tories originally advertised it would cost.

The “cradle-to-grave” bill to taxpayers for buying and operating the controversial F-35 warplane will exceed $600 million per jet – or $45-billion in total, the government announced Wednesday. The Tories originally sold the aircraft as a $9 billion purchase.

The $45-billion lifetime estimate may ultimately prove to be too low if the cash-strapped U.S. government cuts its own order for the F-35 – a move that would increase the average price.

Defence Minister Peter MacKay and Public Works Minister Rona Ambrose went to great effort Wednesday to distance themselves from the July, 2010, purchase announcement, an event where Mr. MacKay posed for photos in a dummy version of the fighter. “We are pressing reset on this acquisition in order to ensure a balance between military needs and taxpayer interests,” Mr. MacKay told reporters. “Let me be clear: The government of Canada will not proceed with a decision to replace the CF-18 fighter aircraft until all steps … are completed.” (end of excerpt)


Click here for the full story, on the Globe & Mail website.

(ends)
   
   
   The Federal Government’s Continuing Spin On F-35 Costs Is Inexcusable (excerpt)

   
   
(Source: National Post; published Dec. 12, 2012)
 
 
   
   So, just to be clear, they’re still spinning us. Even now. Even after all that has gone before, even with the release of its own specially commissioned independent review by the accounting firm of KPMG, the Conservative government still can’t bring itself to tell us the whole truth about the costs of the F-35.

I’ll leave others to try to figure out the rest: whether there will be a truly open competition now that the original sole-source contract is dead, whether Canadian firms will still be able to bid on F-35 work if we don’t buy it, and so on. I’d just like to focus on the comparatively simple question of how much these planes really cost, and why it matters.

You will be familiar with how the government’s official estimate of the cost of the planes has, ahem, evolved over the years: from $9-billion originally (just the acquisition cost), to $16-billion (including acquisition and “sustainment,” but not operating costs), to the $25-billion (including all costs, but only over 20 years) it grudgingly owned up to after the Auditor General’s report last spring.

As you’ll recall, the Auditor General said even that figure severely underestimated the true cost of the project, as the actual service life of the planes was not 20 years, but 36 years. Others, including the Parliamentary Budget Officer, put it at 30 years: that’s the number KPMG used. And the figure that popped out of its calculators was $45.8-billion.

.../…

The new line, as expressed in government documents and repeated by the Defence minister, Peter MacKay, is that the planes will cost $45.8-billion “over 42 years.” Not 20 years, or 30 years, but 42 years. And then the spin: it was a billion dollars a year before, it’s pretty much a billion dollars a years now. So you see? Nothing’s changed.

Except it isn’t 42 years. Not in any comparable sense. The 20 years used in previous cost estimates was the (supposed) service life of the planes: that is, how long they’re expected to be in use, after delivery. KMPG’s report, as I said, assumed a service life of 30 years. So to compare apples to apples, you would have to say the planes are now projected to cost $45-billion over 30 years.

How does the government get 42 years? By adding in 12 years for “development and acquisition,” from the decision to acquire the planes in 2010 to the delivery of the last plane in 2022. No previous estimate included development costs. And indeed they add next to nothing to the total: just $565 million. But by tacking on another 12 years, they allow the government to spread the cost over a much longer time frame, and make the annual cost of the planes seem much lower than it is. (end of excerpt)


Click here for the full story, on the National Post website.

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Faced with ever-growing program delays, Australia has deferred its decision on whether to buy the F-35 and is considering buying a second batch of Super Hornets in the interim. (RAAF photo)

Australia’s Future Air Capability
   
   
(Source: Australian Department of Defence; issued Dec. 13, 2012)
 
   
   (See highlighted paragraphs at bottom)

Minister for Defence Stephen Smith and Minister for Defence Materiel Jason Clare today provided an update on planning for Australia’s future Air Combat Capability.

“Australia’s Air Combat Capability is a vital part of our national security framework. The Government will not allow a gap in our Air Combat Capability to occur,” Mr Smith said.

In May this year, Minister Smith announced that the Air Combat Capability Transition Plan, an assessment of the F-35A Joint Strike Fighter project progress and any potential capability gap, would be presented to Government by the end of 2012 (Emphasis added-Ed.) to inform Government decisions about Air Combat Capability.

The Air Combat Capability Transition Plan prepared by Defence includes an assessment of whether alternative options need to be implemented to ensure continuity in Australia’s Air Combat Capability in light of Joint Strike Fighter project delays and the ageing of Australia’s Classic F/A-18 Hornet fleet.

The Air Combat Capability Transition Plan considered the process for managing the Royal Australian Air Force’s (RAAF) transition from the current mix of Classic Hornet and Super Hornet to a future Air Combat Capability fleet, including the Joint Strike Fighter.

The plan includes an assessment of progress of the Joint Strike Fighter project, the life of the existing 71 ‘Classic’ F/A-18 Hornets, any potential capability gap and management of the Super Hornet and Growler capabilities.

It includes options to purchase additional Super Hornet aircraft.

The Classic Hornet fleet, which originally comprised 75 aircraft, entered service in Australia between 1985 and 1990. The fleet has undergone an intensive maintenance program to ensure the fleet is able to operate until around 2020.

In September this year, the Australian National Audit Office (ANAO) completed a performance audit on the management of the F/A-18 fleet upgrades and sustainment. The ANAO found that Defence’s management of the aircraft has been effective thus far in identifying the risks to their continued operation, that effective mitigation measures have been put in place for these risks, and outlined those that will require ongoing close management by Defence.

The Government has now considered the Air Combat Capability Transition Plan and has directed Defence to undertake further work on a range of Air Combat Capability options, including seeking from the United States up-to-date pricing information on Super Hornets.

RAAF currently has a fleet of 24 F/A-18F Super Hornet aircraft. The fleet was introduced between March 2010 and October 2011.

The F/A-18F Super Hornet was a major step forward in technology for Australia’s Air Combat Capability.

The Super Hornet gives the RAAF the capability to conduct air-to-air combat, to strike targets on land and at sea, to suppress enemy air defences and to conduct reconnaissance.

The Super Hornet is vital to ensuring Australia’s regional Air Combat Capability edge is maintained until the introduction into service of the Joint Strike Fighter capability.

The Government is also acquiring the Growler electronic warfare system for the Super Hornet. Growler is an electronic warfare system that gives the Super Hornet the ability to jam the electronics systems of aircraft and land-based radars and communications systems.

Australia will now send a Letter of Request (LOR) to the United States seeking cost and availability information for up to an additional 24 Super Hornet aircraft through the United States Foreign Military Sales program.

The Australian Government has not made a decision to purchase more Super Hornets. The sending of this LOR does not commit Australia to purchase more Super Hornets. It is being sent so that the Australian Government can further consider all options in 2013 with the latest and best cost and availability information. This has been made clear to both US officials and to the Defence industry.

Following receipt of the LOR response, Government will further and fully consider Australia’s Air Combat Capability in 2013.


(EDITOR’S NOTE: Minister Smith announced in May that the government would make a decision on F-35 purchases within the 2012-13 financial year. The delay announced above delays the decision by at least six more months, into a new budget and election cycle when anything may happen.)

http://www.defense-aerospace.com/articl ... rnets.html
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Re: F-35 JSF
« Responder #376 em: Janeiro 15, 2013, 12:11:47 pm »
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OT&E Reports New F-35 Problems
   
   
(Source: compiled by defense-aerospace.com; posted Jan. 14, 2012)
 
 
   
   The annual report by Michael Gilmore, the Pentagon’s undersecretary for Operational Test and Evaluation, reveals major new problems with all three versions of the F-35, as well as significant shortfalls in meeting flight test milestones.

“The lag in accomplishing the intended 2012 flight testing content [will] contribute to the program delivering less capability in production aircraft in the near term,” the report says. It was submitted to Congress on Jan. 11 and is due to be made public on Jan. 15, according to OT&E. Its more salient points are excerpted below.

The report’s 17-page section on the F-35, first posted by Time’s Battleland blog, lists a surprising and unexpected number of design and production problems that emerged during the past year’s flight testing, including new airframe cracks; an average availability of less than 35%; vulnerability to PAO and fuel fires; delamination of surface coatings; lowering of performance (for example, acceleration time from 0.8 Mach to 1.2 Mach is increased by at least 43 seconds); severe transonic buffeting, and other issues.

Most critically, testing of the US Marine Corps F-35B STOVL variant was halted “in December 2012 after multiple cracks were found in a bulkhead flange on the underside of the fuselage during the 7,000-hour inspection,” the report reveals.

The report’s 17-page section on the F-35 can be accessed here:
http://timemilitary.files.wordpress.com ... report.pdf


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"[Os portugueses são]um povo tão dócil e tão bem amestrado que até merecia estar no Jardim Zoológico"
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Re: F-35 JSF
« Responder #377 em: Janeiro 21, 2013, 06:03:33 pm »
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Pentagon lowers F-35 performance bar

The US Department of Defense is lowering the performance bar for the Lockheed Martin F-35 Joint Strike Fighter according to a new report by the Pentagon’s director of operational test and evaluation (DOT&E).

The specifications for all three variants pertaining to transonic acceleration and sustained turn rates have been reduced. Worst hit in terms of acceleration is the US Navy's F-35C carrier-based model.

“The program announced an intention to change performance specifications for the F-35C, reducing turn performance from 5.1 to 5.0 sustained g’s and increasing the time for acceleration from 0.8 Mach to 1.2 Mach by at least 43 seconds,” reads the report prepared by J Michael Gilmore, the Pentagon's DOT&E. “These changes were due to the results of air vehicle performance and flying qualities evaluations.”

The US Air Force F-35A’s time has slipped by eight seconds while the US Marine Corps short take-off vertical landing (STOVL) F-35B's time has slipped by 16 seconds. However, turn rates for both the A and B models have been impacted more severely than the USN variant. Sustained turning performance for the F-35B is being reduced from 5G to 4.5G while the F-35A sinks from 5.3G to 4.6G according to the report.

All three variants are having problems with their horizontal tails. “Horizontal tail surfaces are experiencing higher than expected temperatures during sustained high speed / high altitude flight, resulting in delamination and scorching of the surface coatings and structure,” the report reads. “All variants were restricted from operations outside of a reduced envelope until the test team added instrumentation to the tailbooms to monitor temperatures on the tail surfaces.”

Meanwhile, the F-35B and C variants continue to have issues with transonic roll-off and buffeting. On the F-35B, the program introduced vehicle systems software to reduce rudder and flaperon hinge moment in the transonic/supersonic region. “The program expected to see improvements in transonic wing roll-off with these changes, but results were not available at the end of November 2012,” the report reads.

Transonic buffet is more severe on the F-35C compared to the other variants due to its larger wing. “The program is making plans for investigating how to reduce the impact of transonic roll-off in the F-35C with the use of wing spoilers; however, detailed test plans are not complete,” the report reads.

Meanwhile, the aircraft’s crucial helmet-mounted display still has problems with jittery images and is not meeting specifications for night vision acuity. Additionally, a new problem called “green glow” has been discovered where light from the cockpit avionics displays leak into the helmet-mounted display and degrade visual acuity. However, the image latency is now within tolerances. “Latency of the projected imagery from the DAS [distributed aperture system] is currently down to 133 milliseconds, below the human factors derived maximum of 150 milliseconds, but still requires additional testing to verify adequacy,” the report reads.

Perhaps in worst shape is the F-35’s software. According to the report, even the initial Block 1 software package is not complete, some 20% remains to be delivered and flight tested. An initial version of the more advanced, but still not combat capable, Block 2A software was delivered four months late to flight test. “In eight subsequent versions released to flight test, only a limited portion of the full, planned Block 2A capability (less than 50 percent) became available and delivered to production,” the report reads. “The program made virtually no progress in the development, integration, and laboratory testing of any software beyond 2B. Block 3i software, required for delivery of Lot 6 aircraft and hosted on an upgraded processor, has lagged in integration and laboratory testing.”

Meanwhile, structural durability testing continues, but the F-35B has hit a snag. “The program halted testing in December 2012 after multiple cracks were found in a bulkhead flange on the underside of the fuselage during the 7,000-hour inspection,” the report reads. “Root cause analysis, correlation to previous model predictions, and corrective action planning were ongoing at the time of this report.”

Lockheed could not immediately offer a substantive comment. “Our experts are going through it so it will be a while before we have detailed questions like yours answered,” the company says, but adds, “From an Operational Test and Evaluation perspective, we fully expect to deliver a qualified product to OT&E as scheduled.”

http://www.flightglobal.com/news/articl ... ar-381031/
 

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Re: F-35 JSF
« Responder #378 em: Janeiro 22, 2013, 11:00:08 am »
Pentagon Grounds Marine Corps Model of F-35 Fighter Jet (excerpt)


(Source: Chicago Tribune; published Jan. 19, 2013)



WASHINGTON --- The Pentagon and U.S. Navy on Friday grounded the Marine Corps version of Lockheed Martin Corp's F-35 fighter jet after an incident that occurred during a training flight at Eglin Air Force Base in Florida on Wednesday.

The Pentagon's F-35 program office said the grounding affected all 25 F-35B model jets, while flights of the Air Force's A-model and the Navy's C-model were unaffected. Ground operations of the B-model planes continued, it said.

The program office it ordered the temporary suspension of flight operations after a propulsion line associated with the B-model's exhaust system failed prior to takeoff. The pilot aborted the takeoff without incident and cleared the runway, the program office said in a statement. There were no injuries to the pilot or ground crew.

The incident came just days after the Pentagon's director of testing and evaluation released an 18-page report detailing an array of problems which he said underscored the "lack of maturity" of the $396 billion fighter program.

The report and Friday's grounding of the B-model highlighted the continued growing pains of the ambitious Lockheed fighter program, which began in 2001 and has been restructured three times in recent years.

The grounding affected F-35B models, which can take off from short runways and land vertically like a helicopter, at a Maryland naval air station, the Florida air base, Marine Corps Air Station Yuma in Arizona, and Lockheed's F-35 production facility in Fort Worth, Texas.

"Implementing a precautionary suspension of flight operations is a prudent response until F-35B engineering, technical and system safety teams fully understand the cause of the failure," said Joe DellaVedova, spokesman for the Pentagon's F-35 program office. "Safety of pilots and ground crew is the top priority of the program."

The fuel line in question enables actuator movement for the exhaust system associated with the B-model's engine. Instead of traditional hydraulic fluid, it instead uses fuel as the operating fluid to reduce weight. (end of excerpt)


Click here for the full story, on the Chicago Tribune website.

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"[Os portugueses são]um povo tão dócil e tão bem amestrado que até merecia estar no Jardim Zoológico"
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Re: F-35 JSF
« Responder #379 em: Janeiro 22, 2013, 05:06:00 pm »
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Pentágono: caça F-35 pode explodir se for atingido por raio

20 de Janeiro de 2013 17h32 atualizado às 17h36



O avião está em fase de testes e deve substituir os tradicionais F-22 da Força Aérea americana
Foto: AFP   

Um relatório do Departamento de Defesa dos Estados Unidos afirma que o tanque de combustível do caça F-35, da fabricante Lockheed Martin, pode explodir se for atingido por um raio. A divulgação dessa falha é um grande revés para o projeto do jato considerado o mais sofisticado e caro do mundo. O avião está em fase de testes e deve substituir os tradicionais F-22 da Força Aérea americana, além de constituir a nova geração de aeronaves de combate dos governos de outros países, como Reino Unido, Itália e Israel. As informações são do jornal The Telegraph.

O documento do Pentágono também revelou que as tentativas de aumentar a eficiência de combustível, reduzindo o peso, também tornaram o jato mais vulneráveis ​​a um ataque inimigo do que a geração de aeronaves que ele deveria substituir. Com a descoberta, o F-35, também conhecido como Lightning II, foi proibido de voar em tempestades durante a fase de testes. O problema estaria em um dispositivo do tanque de combustível, que regular os níveis de oxigênio, que precisará ser redesenhado.

No entanto, esse é apenas um de uma série de problemas verificados pelo Pentágono no programa F-35. Uma falha de design do tanque de combustível também impede o jato de descer rapidamente para baixas altitudes. O relatório do Pentágono descreve ambos os fracassos como "inaceitável para o combate ou treinamento de combate".

A Lockheed Martin, fabricante da aeronave, também descobriu uma série de rachaduras nas aeronaves testadas. "Todas essas descobertas vão exigir planos de mitigação e podem incluir peças redesenho e peso adicional", acrescenta o relatório.

Em tese, o F-35 deverá ser capaz de voar para o espaço aéreo do inimigo, atacá-lo e retornar com segurança, sem ser detectado pelos radares. Mas o F-35 tem sido marcado por críticas desde sua criação, na década de 1990. Nos Estados Unidos, o projeto ganhou notoriedade por ser o mais caro já realizado pelo Pentágono. As estimativas sugerem que o custo total da compra, operação e manutenção dos aviões nos próximos 30 anos será US$ 1 trilhão.

    Terra

http://noticias.terra.com.br/mundo/esta ... aRCRD.html
"[Os portugueses são]um povo tão dócil e tão bem amestrado que até merecia estar no Jardim Zoológico"
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Re: F-35 JSF
« Responder #380 em: Janeiro 22, 2013, 05:09:32 pm »
Os tradicionais F-22?!  :roll:
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Re: F-35 JSF
« Responder #381 em: Janeiro 25, 2013, 08:13:23 pm »
O F-35 vai substituir os F-22??? :D  :arrow:
"Nunca, no campo dos conflitos humanos, tantos deveram tanto a tão poucos." W.Churchil

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Re: F-35 JSF
« Responder #382 em: Janeiro 26, 2013, 02:20:18 pm »
 

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Re: F-35 JSF
« Responder #383 em: Fevereiro 02, 2013, 12:15:56 am »
https://www.youtube.com/user/HSMW/videos

"Tudo pela Nação, nada contra a Nação."
 

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Re: F-35 JSF
« Responder #384 em: Fevereiro 26, 2013, 10:53:18 am »
F-35s Grounded As Precaution After Crack Found In Engine Blade
   
   
(Source: US Air Force; issued Feb. 22, 2013)
 
 
   
   WASHINGTON --- All F-35s have been grounded as a precaution after a routine engine inspection revealed a crack on an engine blade, Defense Department officials said Feb. 22 here.

Officials call this a "cautionary suspension of flight." The Air Force, Navy and Marine Corps fly F-35s.

Inspectors found the crack in an F135 engine installed in an F-35A Lightning II at Edwards Air Force Base, Calif. This is the conventional take-off and landing version of the Joint Strike Fighter.

Officials are shipping the engine and its associated hardware to Pratt & Whitney's engine facility in Middletown, Conn., to conduct more thorough evaluation and root cause analysis.

Officials said the grounding is precautionary. All F-35 flight operations have been suspended until the investigation is complete, officials said, and it is too early to know the fleetwide impact.

"The F-35 Joint Program Office is working closely with Pratt & Whitney and Lockheed Martin at all F-35 locations to ensure the integrity of the engine, and to return the fleet safely to flight as soon as possible," a Defense Department news release said.


EDITOR’S NOTE: There are several notable aspects to this incident.
First of all, the crack was found on Feb. 19, but the grounding was only decided two days later, on Feb. 21, which is surprising for a “cautionary” (presumably, they mean “precautionary”) measure.
The grounding also prohibits using the engines on the ground.
Also, although according to Reuters the crack is 0.6 inches (1.5 cm) long, it was only discovered during a 50-hour engine inspection.
The engine involved had clocked up 700 hours, of which 409 flight hours, before the crack was found.
Finally, the grounding was only made public on Feb. 22, after it had been reported by some media outlets. The JPO still has a long way to go in terms of transparency.)

(ends)

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Re: F-35 JSF
« Responder #385 em: Março 07, 2013, 02:25:59 pm »
USAF’s F-35A Not Even Ready for Combat Training
   
   
(Source: Project On Government Oversight; issued March 6, 2013)
 
 
   
   Including stunning pilot comments about the aircraft's survivability (such as "Aft visibility will get the pilot gunned [down] every time"), a new, unclassified DOD document on the F-35 is now available.

It describes the performance of the F-35A and its support systems in initial training at Eglin Air Force Base in Florida. Not previously in the public domain, the unclassified DOT&E materials are available at the POGO.org.
   
   
   DoT&E Memo on F-35A Operational Utility Evaluation
   
   
(Source: DoD Director, Operational Test and Evaluation; dated Feb. 15, 2013)
 
 
   
   FOR: SECRETARY OF DEFENSE ·
FROM: J. Michael Gilmore, Director, Operational Test and Evaluation
SUBJECT: F-35A Ready For Training Operational Utility Evaluation (OUE)

• I have attached at TAB A the F-35A Ready For Training OUE Report. At the request of the Joint Strike Fighter Program Executive Officer, the OUE evaluated the capability of the F-35A air vehicle and the infrastructure at Eglin Air Force Base to train an experienced initial cadre of pilots using a very basic syllabus designed to familiarize pilots with aircraft that possessed no combat capability. It also evaluated the ability of the F-35A maintenance and Autonomic Logistics Information System to sustain a sortie generation rate consistent with the limited training contained in the Block 1 A syllabus.

In the report I conclude the following:

• The limitations, workarounds, and flight restrictions in place on the F-35A at this early stage of its development substantially limit the utility of training. However, the evaluation indicates areas where the program needs to focus attention and make improvements.

• The radar, the pilot's helmet-mounted display, and the cockpit interfaces for controlling the radios and navigational functions should be improved.

• Discrepancies between the courseware and the flight manuals were frequently observed, and the timelines to fix or update courseware should be shortened.

• The training management system lags in development compared to the rest of the Integrated Training Center and does not yet have all planned functionality.

• Plans and procedures for training pilots to recover the aircraft in the event of an engine problem or flameout should be reviewed for adequacy and to assure such training can be conducted in an appropriate venue.

• Sustainment of the six Block 1A F-35A aircraft was sufficient to meet the relatively low student training sortie demand of the syllabus, but only with substantial resources (aircraft and manpower) and workarounds to the intended sustainment system in place.

• The demonstrated reliability of the F-35A is significantly below the program office's projected targets for the reliability it expected the aircraft to achieve at the 2,500 flight hours the F-35A fleet has now accumulated.

• I am providing copies of my report to the Under Secretary of Defense for Acquisition, Technology and Logistics; the Secretary of the Air Force; the Secretary of the Navy; and the Vice Chairman of the Joint Chiefs of Staff. The professional staff of the Congressional defense committees have also requested the report and I will provide them copies next Thursday. By law, I must provide the Congress with any test-related material it requests.


Click here for the full report (68 PDF pages) on the POGO website.

(ends)
   
   
   New, Unclassified DOD Document Describes F-35A Performance in Training
   
   
(Source: Project On Government Oversight; issued March 6, 2013)
 
   
   (by Winslow T. Wheeler, Director, Straus Military Reform Project, POGO)
 
 
   
   Find my summary and analysis of the document below.


The Air Force's F-35A: Not Ready for Combat, Not Even Ready for Combat Training

On February 15, 2013 the Department of Defense's Director of Operational Test and Evaluation (DOT&E) sent a memorandum and accompanying evaluation report to Congress and the DOD hierarchy describing the performance of the F-35A and its support infrastructure at Eglin Air Force Base (FL). There, already skilled Air Force pilots are undergoing a basic syllabus of familiarization training with the aircraft.

Not previously in the public domain, the unclassified DOT&E materials are available at the POGO website at http://pogoarchives.org/straus/ote-info ... 130215.pdf

DOT&E's report, titled "F-35A Joint Strike Fighter: Readiness for Training Operational Utility Evaluation," reveals yet more disappointments on the status and performance of the F-35. The Operational Utility Evaluation (OUE) is particularly valuable as it focuses on the Air Force's A model of the F-35 "Joint Strike Fighter." Many in the political and think tank world have focused more on the Marine Corps B, or Short Take Off and Vertical Landing (STOVL), version or the Navy's C model with its heavier structure and larger wings.

While the B and C are even more expensive and lower in performance-on certain key performance dimensions-than the Air Force's A model, this OUE (inadvertently) demonstrates that the A model is also flawed beyond redemption.

While the DOT&E paperwork includes an opening memo and an executive summary, they do not do justice to the detailed findings of the report. Specific issues are discussed below-much of it in quotations and showing the appropriate page number of the text of the evaluation.

RESTRICTIONS IN SOFTWARE, SYSTEMS AND FLIGHT


The currently available software essential to control the aircraft (software Blocks 1A and 1B) is "intended to provide only basic pilot training and has no combat capability. The current aircraft have a number of significant operational restrictions . such as limited maneuvering, speeds, and constrained descent rates; no carriage of weapons, no use of countermeasures, and no opening of weapons bay doors in flight." (p. 1.)

Also, ". student pilots were limited in flight maneuvering to very basic aircraft handling, such as simple turns, climbs, and descents as the flight envelope of speed and altitude was limited, angle-of-attack and g-loading were restricted, and maneuvers normally flown during a familiarization phase of a syllabus were explicitly prohibited." (p. 2.)

Table 3-1 (starting on p. 14.) outlines the many limitations. The following are prohibited:

-- Descent rates more than 6,000 feet per minute (for reference, Wikipedia shows the F-16C rate of climb to be 50,000 feet per minute);
-- Airspeed above 550 knots per hour or Mach 0.9 (not the 1.6 Mach or 1,200 mph Wikipedia says the F-35 is capable of);
-- Angle-of-attack (attitude of flight) beyond -5 and +18 degrees (e.g. not the +50 degrees the aircraft is capable of);
-- Maneuvering at more than -1 or +5 gs (nowhere near the stated +9g capability);
-- Take offs or landings in formation;
-- Flying at night or in weather;
-- Using real or simulated weapons;
-- Rapid stick or rudder movements;
-- Air-to-air or air-to-ground tracking maneuvers;
-- Refueling in the air;
-- Flying within 25 miles of lightning;
-- Use of electronic countermeasures;
-- Use of anti-jamming, secure communications, or datalink systems;
-- Electro-optical targeting;
-- Using the Distributed Aperture System of sensors to detect targets or threats;
-- Using the Identification Friend or Foe (IFF) Interrogator;
-- Using the helmet mounted display system as a "primary reference;"
-- Use of air-to-air or air-to-ground radar modes for electronic attack, sea search, ground-moving targets or close-in air combat modes. (pp. 14-16.)


In addition, "...the radar system exhibited shortfalls that - if not corrected - may significantly degrade the ability to train and fly safely under a typical transition training syllabus, where an operational radar is required. The radar performance shortfalls ranged from the radar being completely inoperative on two sorties to failing to display targets on one sortie, inexplicably dropping targets on another sortie, and taking excessive time to develop a track on near co-speed targets on yet another sortie." (p. 13.)

"AFT VISIBILITY WILL GET THE PILOT GUNNED EVERY TIME"

A key system of the aircraft, the pilot's multi-million dollar helmet-mounted display (HMD) of the aircraft's operating systems, threats, targets and other information "functioned more or less adequately. [but] presented frequent problems for the pilots."

These included "misalignment of the virtual horizon display with the actual horizon, inoperative or flickering displays, and focal problems - where the pilot would have either blurry or 'double vision' in the display. The pilots also mentioned problems with stability, jitter, latency, and brightness of the presentation in the helmet display.." Two of the complaints were basically that elements of the helmet made it harder, not easier, to see outside the aircraft. (pp. 16-17.)

There are additional problems for detecting threats in the all-important visual mode: the ejection seat headrest and canopy "bow" (where the canopy meets the fuselage) are designed in such a way as to impede seeing aircraft to the rear: one pilot commented "A pilot will find it nearly impossible to check [their six o'clock position{to the rear}] under g." Another commented, "The head rest is too large and will impede aft visibility and survivability during surface and air engagements," and "Aft visibility will get the pilot gunned [down] every time," referring to close-range combat. (p. 18.)

Indeed, DOT&E stated explicitly "The out-of-cockpit visibility in the F-35 is less than other Air Force fighter aircraft." (p. 17.)

To summarize in different words, the helmet-mounted display and the F-35 system does not present an enhanced, clearer view of the outside world, targets and threats to the pilot; instead, they present a distorted and/or obstructed view.

This is one of the most serious backward steps that the entire F-35 system takes, and it presents an even greater threat to the survivability of the F-35 and its pilot than the astounding evidence of the flammability of the F-35 (all versions) in the recent analysis of another DOT&E report by military analyst Lee Gaillard at Counterpunch at http://www.counterpunch.org/2013/03/04/ ... -the-f-35/

In the event of the pilot needing to escape from the aircraft, there are also some incompletely explained problems with the ejection seat in "off-normal" situations, i.e. those that can occur in combat or even real training. (p. 43.)

SUSTAINMENT

While there is little that is more important than pilot and aircraft survivability, additional, almost-as stunning revelations about the F-35A involved its "sustainment"-or reliability, maintainability, and availability.

While the report states "Sustainment of the six Block 1A F-35A aircraft was sufficient to meet the student training sortie requirements of the syllabus" (p. ii.), it further explains that this was despite "generous" Air Force resources and a "hybrid of government and contractor support personnel that relies heavily on workaround procedures, non-standard support procedure, and specialized support equipment to generate sorties and maintain the F-35A fleet.." (p. iv).

Moreover, "the program is not meeting reliability growth targets.." That is to say, it is not as reliable as it should be for this stage of its development. (pp. iv and 27) It is also important to note that this was despite the aircraft lacking many mission systems "which resulted in far fewer failure modes and a narrower scope of demand on the supply chain" than would a combat capable aircraft. (In other words, had more of the F-35's complex components and systems been available for use, the aircraft would have required still more maintenance, with the commensurate, additional loss of reliability and availability. [p. 27])

The as is sustainment numbers were not impressive.

The F-35 program required an air abort rate no greater than 1,000 aborts per 100,000 flight hours to commence F-35A training (p. 27): while they were previously even higher, in late 2012-well after the training started-the aircraft had an air abort rate of 3,600 air aborts per 100,000 flying hours. (p. 28)

Mission aborts while the plane is still on the ground (ground aborts) were also a serious problem: one in seven sortie attempts resulted in a ground abort. (p. 28)

The Air Force wanted the F-35As at Eglin AFB to be available for training missions 33 percent of the time: the equivalent of each aircraft flying one sortie every three days. (pp. 29, 30) By late 2012 this very modest minimum was basically being achieved (p. 29), but certain aircraft at various times during the OUE flew as seldom as one sortie every 7 to 10 days. (pp. 30, 31)

Mean Flight Hours Between Critical Failures (a typical measure of reliability) occurred every four hours, on average-well short of the expected 11 hours at this stage of the F-35's development-and well below the aircraft's ultimate goal of a modest 20 hours. (p. 34) The F-35As at Eglin also failed reliability goals for this stage of development: a major problem was the poor reliability of the complicated, badly performing helmet. (p. 34)

Similar problems occurred on the maintenance time the aircraft required. (pp. 36, 37) For example, the mean elapsed time for an engine removal and installation was 52 hours; the system threshold is 120 minutes. (p. 37)

One component vividly demonstrated the fragility of the F-35A. Temperatures at Eglin as moderate as <59 degrees Fahrenheit caused a problem for the 270 Volt Battery Charger Control Unit inside the airplane. Maintainers had to warm the aircraft in hangars overnight to prevent ground aborts. (p. 38) Foreign purchasers such as Canada and Norway, already wary of real cold weather issues for their F-35As, are sure to be concerned with a "cold weather" issue at just 59 degrees and below.

The aircraft's Autonomic Logistics Information System (ALIS) was limited and required workarounds throughout the operating cycle (p. 38), and it has potential problems in hot weather when air conditioning is not available, which would cause ALIS to shut down altogether. The system was also cumbersome and time consuming. (pp. 39-41)

CONCLUSION

The conclusion is obvious: The F-35A is not viable.



(EDITOR’S NOTE: Not mentioned above, but reported by the Toronto Star, are two other points:
-- “Mechanics have had their own gripes. It takes more than two days to swap out an engine rather than the two hours it was supposed to take.
-- “And because a battery unit is vulnerable in cool temperatures, ground crews have had to keep the aircraft in heated hangars overnight, taking up space that would otherwise be used for jets needing repairs. “Moving jets in and out of a hangar to keep them warm involves five personnel for three to four hours per shift,” the report says, or 15 to 20 man-hours.)

-ends-

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Lightning

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Re: F-35 JSF
« Responder #386 em: Março 07, 2013, 05:25:53 pm »
Ainda bem que não enfiamos dinheiro nesse cancro :lol: , vai ser o verdadeiro century fighter, pelo tempo que irá voar, tal como o B-52 c34x .
 

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raphael

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Re: F-35 JSF
« Responder #387 em: Março 08, 2013, 12:50:40 am »
Citação de: "Lightning"
Ainda bem que não enfiamos dinheiro nesse cancro :lol: , vai ser o verdadeiro century fighter, pelo tempo que irá voar, tal como o B-52 :twisted:
Um abraço
Raphael
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Lightning

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Re: F-35 JSF
« Responder #388 em: Março 08, 2013, 09:14:45 pm »
Citação de: "raphael"
Nem que se aperte o cinto e se mantenha só uma Esquadra de F-16! :mrgreen: (estou a brincar).

Eu quando falei no century fighter, estava a referir-me a todos os paises que tem o F-16, pois nem está previsto o F-35 para nós, estava a falar mais precisamente dos Americanos visto que muito dificilmente conseguirão substituir todos os mil e tal F-16 da Força Aérea por F-35, fora a Marinha e os Marines que também querem umas centenas deles.
 

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borisdedante

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Re: F-35 JSF
« Responder #389 em: Março 11, 2013, 04:08:07 am »
Dutch F-35 IOT&E and the Reliability of the US Government

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