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F-35 Cancelled, then what ?

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F-35 Cancelled, then what ?

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Old 7th Jun 2017, 08:59
  #10481 (permalink)  
 
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Originally Posted by ORAC
As the orders for FA/E-18s stack up, the required number of USN F-35Cs goes down.....

Super Hornets see boost in new US budget request

"President Donald Trump’s proposed budget would add funding to buy up to 74 Boeing F/A-18E/F Super Hornets through 2022, or 60 more than planned in previous budget forecasts.

The Navy is requesting 14 Super Hornets in Fiscal 2018 to mitigate the service’s strike fighter shortfall, officials said this week. In addition, Trump’s budget proposal inserts new plans to procure 23 more F/A-18E/Fs in FY2019, 14 in FY2020, 14 in FY2021 and 15 in FY2022. The recent request not only includes funding for new Super Hornets, but also advanced procurement dollars to address advanced capabilities."......

Boeing to Integrate Infrared Search, Tracking System in F-18 Combat Jets

WASHINGTON (Sputnik) — US aerospace giant Boeing won $89 million to build a new Infrared Search and Track System into the Navy's F/A-18 Super Hornet aircraft, the Defense Department said in a press release.

"The Boeing Co., St. Louis, Missouri, is being awarded an $89,000,000 contract for incorporation of the Block II Infrared Search and Track System (IRST) in the F/A-18 E/F aircraft," the release explained Thursday. "The contract includes the initial design and development, procurement of prototyping hardware, technical risk reduction efforts, integrated product support, and technical reviews of IRST Block II with the F/A-18E/F aircraft."....

Hmmm,didn't the Donald buy a big wedge of Boeing stock a while back?
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Old 8th Jun 2017, 10:27
  #10482 (permalink)  
 
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How ODD that Boing would want to build a IRST system from the ground up when there are already "world class" IRST systems available?

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Old 8th Jun 2017, 13:30
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It's not Boeing's IRST, it's an LM product.
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Old 8th Jun 2017, 14:52
  #10484 (permalink)  
 
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Japan assembly

Saw the first aircraft roll out of the Japanese assembly line. I would think increasing share would come from this line for other customers in the area as well, and hints of fuselage production (not just assembly). Japan seems to have a pretty good record with license production and creating local jobs.


Japan Rolls Out First Domestically-Built F-35 Stealth Fighter | The Diplomat
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Old 9th Jun 2017, 00:04
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LM F-35 GM Update 01 Jun 2017 Jeff Babione
"Final ASRAAM SDD Test Complete
The Pax River team is also completing significant testing, including the final test for the AIM-132, Advanced Short Range Air-to-Air Missile (ASRAAM), as part of flight science SDD testing. The U.K.’s Royal Air Force will primarily use this missile. It will provide the U.K. with enhanced aerial combat capabilities, engaging targets within visual range and under complex environmental conditions. The missile launch was the eighth required for the test team to clear the envelope.

This cool photo is a great example of how Pax River ITF photographers capture stunning content to show off to the world. The U.K. will utilize ASRAAMs along with the yellow ordnance you see in this photo, called Paveway IV bombs." https://a855196877272cb14560-2a4fa81...ate_6_1_17.pdf (0.85Mb)
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Old 9th Jun 2017, 19:26
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F-35s Grounded at Luke AFB After Pilots Report Hypoxia-Like Symptoms 09 Jun 2017 Oriana Pawlyk
"The Air Force has grounded all F-35 Joint Strike Fighter operations at Luke Air Force Base, Arizona, after pilots complained of hypoxia-related symptoms, officials said Friday.

"The 56th Fighter Wing at Luke Air Force Base, Arizona, canceled local flying operations today for F-35A Lightning II aircraft due to a series of five incidents in which pilots have experienced hypoxia-like symptoms," Air Force spokesman Capt. Mark Graff said in an email statement.

He did not say when flight operations would resume.

Base officials informed the service that since May 2, five F-35A pilots have experienced "physiological incidents while flying," the statement said. In each case, officials said, the aircraft's backup oxygen system kicked in, and the pilot followed the correct procedures, landing safely.

"In order to synchronize operations and maintenance efforts toward safe flying operations, we have canceled local F-35A flying. The Air Force takes these physiological incidents seriously, and our focus is on the safety and well-being of our pilots," said Brig. Gen. Brook Leonard, 56th Fighter Wing commander. "We are taking the necessary steps to find the root cause of these incidents."

The Air Force said Friday it had contacted other F-35 squadrons and international partners operating the aircraft to educate pilots on the incident.

"Pilots will also be briefed on all the incidents that have occurred and the successful actions taken by the pilots to safely recover their aircraft," the release said."
F-35s Grounded at Luke AFB After Pilots Report Hypoxia-Like Symptoms | Military.com
ALSO HERE: F-35s at Luke Air Force Base grounded after pilots suffered oxygen deprivation 09 Jun 2017
https://www.airforcetimes.com/articl...en-deprivation

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Old 9th Jun 2017, 21:12
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http://www.airforcemag.com/Features/...Incidents.aspx
&
http://breakingdefense.com/2017/06/j...ypoxia-events/

USAF cancels F-35A flying at Luke AFB 09 Jun 2017 Leigh Giangreco
"After five oxygen deprivation incidents, the US Air Force has temporarily canceled Lockheed Martin F-35A flying operations at Luke Air Force Base, Arizona. Since 2 May, five F-35A pilots at Luke have reported “hypoxia-like symptoms,” said the USAF on 9 June.

The crews experienced a range of symptoms, from slight dizziness and disorientation to tingling and coldness in their extremities, but were trained to recognise the problems and landed safely using the aircraft’s backup oxygen system, says a spokeswoman for Luke AFB. Flight operations will resume 12 June, she says.

Fifty-five F-35As are stationed at Luke AFB, but the hypoxia issue only applies to 48 of those aircraft; seven aircraft flying at Mountain Home Air Base, Idaho for training this week returned to Luke on 9 June.

The F-35 Joint Programme Office had stood up an action team weeks ago to probe the oxygen issue, but after the fifth incident on 8 June, Luke AFB took the dramatic step of suspending flights.

“We have no idea what’s causing it,” the spokeswoman says. “There's been no testing across the board, we’re going to dig through the data to find some trends.” The USAF does not yet know if the F-35s at Luke come from the same production lot, but the service is focusing on that aspect today, she adds.

The hypoxia incident appears to be isolated to Luke AFB and will not affect the F-35A’s appearance at the Paris air show, Lockheed spokesman says. The aircraft pair for the show will fly from Hill AFB, Utah and their test pilots have not experienced issues, says Lockheed...." https://www.flightglobal.com/news/ar...ke-afb-438124/

Last edited by SpazSinbad; 10th Jun 2017 at 00:28. Reason: + another URL & anotherie
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Old 10th Jun 2017, 03:48
  #10488 (permalink)  
 
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F-35 Grounded - More OBOGS Problems

Raptor cough, T-45 OBOGS safety issues, and now the F-35. Von Richtofen never had these high-tech breathing problems.

F-35 jets grounded at U.S. Air Force base in Arizona: officials | Reuters
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Old 10th Jun 2017, 04:18
  #10489 (permalink)  
 
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A couple of earlier article posts about this HICCUP here: SCROLL Down for more Coughs

http://www.pprune.org/military-aviat...ml#post9797867
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Old 10th Jun 2017, 17:01
  #10490 (permalink)  
 
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"There's been no testing across the board, we’re going to dig through the data to find some trends."


I'll just leave that there for those members who are so quick to decry those that ask questions and then point out the answers don't match.
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Old 10th Jun 2017, 18:45
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The announcement comes a little more than a week before the F-35A heads to the Paris Air Show. Lockheed Martin pilots are expected to conduct a flight demonstration during the show... and the demo will go forward as scheduled, said Lockheed spokesman Mike Rein.

"We are going as planned," he said. "Our pilot hasn't shown any symptoms."


That's a great example of flight safety discipline there. Either LM demo pilots don't breathe oxygen like the rest of us, or their PR guy is breathing something that he shouldn't be breathing.
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Old 10th Jun 2017, 22:15
  #10492 (permalink)  
 
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Hmmm, flight safety from afar from info in disjointed articles online, from 'concern trolls'. Below is a quote from the URL immediately above the F-35 OBOGS graphic not quoted at the time:
"...Maj. Rebecca Heyse, spokeswoman for the 56th, stressed that flight operations are currently only suspended for one day, and will resume on Monday...." [at LUKE AFB]
After some 95,000 F-35 flight hours this is the first we hear of any 'hypoxia or related events' confined to LUKE AFB F-35s. As for testing previously one would assume the life support systems would have been the first to be tested thoroughly. Previously whilst USN OBOGS undergoing scrutiny with aircraft not grounded Shornetwise & Goshawks confined to limitations it was usually stated that the F-35 had no such issues.

Article here mentioned above has some balance without sensationalism: http://breakingdefense.com/2017/06/j...ypoxia-events/

& yet another story here: http://www.airforcemag.com/Features/...Incidents.aspx

Last edited by SpazSinbad; 10th Jun 2017 at 22:24. Reason: add URL
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Old 12th Jun 2017, 18:40
  #10493 (permalink)  
 
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A TWITTER with more to follow I guess:
"Valerie Insinna‏: Breaking: The F-35 flight suspension at @LukeAFB will continue until the Air Force figures out a risk mitigation strategy, the base says.
https://twitter.com/ValerieInsinna/s...14296917987328
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Old 12th Jun 2017, 23:27
  #10494 (permalink)  
 
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Luke Air Force Base extends cancellation of F-35 flight operations 12 Jun 2017 Valerie Insinna
"F-35 flight operations at Luke Air Force Base, Arizona, will continue to be suspended as analysts investigate five incidents where pilots suffered hypoxia-like symptoms, a spokeswoman for the base said Monday....

...Maj. Rebecca Heyse, spokeswoman for the 56th Fighter Wing, said a JPO team of engineers, maintainers and aeromedical specialists arrived on base Sunday and are currently narrowing down potential causes for the incidents. The hope is to identify the root cause over the next couple days, but no date has been set as this time for a tentative resumption of operations, she told Defense News....

...At this point, little is known about the incidents themselves, including whether the On-Board Oxygen Generating System failed in any of the cases. All five events occurred with different jets from multiple squadrons and production batches, Heyse confirmed. However, because only pilots from Luke AFB have developed hypoxia-like symptoms, the service continues to believe it remains a localized problem.

Brig. Gen. Brook Leonard, commander of the 56th Fighter Wing, will make the final call on when to resume flight operations."
Luke Air Force Base extends cancellation of F-35 flight operations
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Old 13th Jun 2017, 12:32
  #10495 (permalink)  
 
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does the BOS go with the seat on ejection? or does the sea have a separate O2 supply?
Just asking due to the location on that diagram..


"Brig. Gen. Brook Leonard, commander of the 56th Fighter Wing, will make the final call on when to resume flight operations"

Hmmm.
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Old 13th Jun 2017, 12:49
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Could've & Should've given the URL for the PDF from whence Honeywell/F-35 OBOGS GIF graphic came: [same same OBOGS in Eurofarter & F-35/F-22]
https://aerocontent.honeywell.com/ae...rt_Systems.pdf (4Mb)
"...Typical System Architecture
A typical system is shown in Figure 4. [wot you see above in GIF grfx] The OBOGS is controlled by a solid state monitor/controller that monitors the PPO2 level of the OBOGS product gas, and adjusts the cycling of the beds to produce the desired level of oxygen concentration shown in Figure 2. [seen in PDF] This process is known as concentration control and means that no air-mix, or dilution, of the product gas is required at the regulator.

The breathing gas then passes to the pilot’s breathing regulator, either a console/panel-mounted, ejection seat-mounted or pilot-mounted device. The regulator is a demand flow regulator like those of GOX and LOX systems, differing only in the fact that they operate at lower pressures and do not air-mix. The final system element is a back-up oxygen cylinder mounted on the ejection seat to provide oxygen during pilot ejection, or in the unlikely event of an interruption in the OBOGS supply....

...Breathing gas purity – OBOGS regulators do not air-mix thus the pilot is not susceptible to smoke and fumes from the cockpit. Oxygen concentration is controlled inside the zeolite beds and is hence free from contamination...."
Quote from 2 page PDF attached about the MB F-35 Ejection Seat: http://militaryrussia.ru/forum/downl...e.php?id=28256 (PDF there no longer available)
"...The catapult houses a 300L backup oxygen system (BOS) which can be removed or re-charged on the seat. Both the SCP and BOS are supplied by Honeywell Aerospace based in Yeovil, Somerset, UK...."
Attached Files

Last edited by SpazSinbad; 14th Jun 2017 at 16:37. Reason: +pdf +format
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Old 14th Jun 2017, 09:51
  #10497 (permalink)  
 
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Hmm are the symptoms hypoxia or aerotoxic syndrome?
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Old 14th Jun 2017, 10:17
  #10498 (permalink)  
 
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'anorexia nervosa'/syntoxic aerodrome'? I guess 'glad rag' you did not read the post immediately above your own?
"Breathing gas purity – OBOGS regulators do not air-mix thus the pilot is not susceptible to smoke and fumes from the cockpit. Oxygen concentration is controlled inside the zeolite beds and is hence free from contamination...."
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Old 14th Jun 2017, 12:53
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Where does the gaseous input for the OBOGS system come from spaz?.?.?.

Would it be the same source as the cabin pressurisation system spaz?

?.?.?.
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Old 14th Jun 2017, 16:15
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Some quotes from the Honeywell OBOGS 8 page PDF but reduced to 6 pages by deleting the front/back covers deemed irrelevant - the full 8 pages can always be downloaded from the URL given. One graphic is already above the other below the quotes below. Conditioned Engine Bleed Air is the source and yet... read quotes.

"...On-Board Oxygen Generation Systems (OBOGS) HONEYWELL 16 Jan 2008
Honeywell developed OBOGS technology in the 1980’s to allow an aircraft to generate its own oxygen during flight. OBOGS takes advantage of a molecular sieve material, Zeolite, which traps nitrogen molecules when air is passed through it, allowing it to act as a molecular sieve. Figure 3 shows an OBOG concentrator with 2 zeolite-filled beds. The lower zeolite bed is currently producing oxygen. Conditioned engine bleed air enters the lower bed, having first been filtered to remove particulate contaminants, and is then reduced to a suitable pressure by the Pressure-Reducing Valve. As the air passes along the zeolite bed, the nitrogen molecules within it are adsorbed by the zeolite.

At the far end of the bed, a product gas that is up to 95% oxygen is produced, the balance of the gas being made up of argon. The presence of argon has been widely shown to have no physiological effect on crew/pilots.

Over time, the bed becomes saturated with nitrogen, and oxygen production is switched to another bed that has been purged of nitrogen. The upper bed in Figure 3 is in the process of having the nitrogen removed, by using part of the product gas from the lower bed to ‘purge’ the nitrogen out of the bed to then be vented overboard. Once the upper bed is clean, oxygen production will be switched to it, whilst regeneration of the now nitrogen full lower bed is carried out, and so the cyclical process continues.

Typical System Architecture
A typical system is shown in Figure 4. The OBOGS is controlled by a solid state monitor/controller that monitors the PPO2 level of the OBOGS product gas, and adjusts the cycling of the beds to produce the desired level of oxygen concentration shown in Figure 2. This process is known as concentration control and means that no air-mix, or dilution, of the product gas is required at the regulator.

The breathing gas then passes to the pilot’s breathing regulator, either a console/ panel-mounted, ejection seat-mounted or pilot-mounted device. The regulator is a demand flow regulator like those of GOX and LOX systems, differing only in the fact that they operate at lower pressures and do not air-mix. The final system element is a back-up oxygen cylinder mounted on the ejection seat to provide oxygen during pilot ejection, or in the unlikely event of an interruption in the OBOGS supply.

Benefits of OBOGS compared to GOX and LOX...
...Breathing gas purity – OBOGS regulators do not air-mix thus the pilot is not susceptible to smoke and fumes from the cockpit. Oxygen concentration is controlled inside the zeolite beds and is hence free from contamination...."
https://aerocontent.honeywell.com/ae...rt_Systems.pdf
Attached Files

Last edited by SpazSinbad; 14th Jun 2017 at 16:38. Reason: format
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