F-22 Raptor "sucks"

[RIPTIDE]

I hear the F-22 pretty much rules the...... ground ///troolllolll

[mvsgas]

I hear the F-22 pretty much rules the...... ground ///troolllolll

 

Nope F- 35 does that

http://www.airforcetimes.com/news/2011/08/defense-f-35s-grounded-after-ipp-fails-080311/

[power5]

Nope F- 35 does that

http://www.airforcetimes.com/news/2011/08/defense-f-35s-grounded-after-ipp-fails-080311/

 

"The Navy’s F-35C was also grounded for six days in June due to a software problem with the wing-fold mechanism that might have caused the flight control surfaces to freeze in flight. The aircraft returned to flight June 23."

 

The wings fold on the F35? Thats news to me. :huh:

[GGTharos]

The F-35C is the carrier variant with folding wings.

[power5]

Cant believe there is no filtration on the oxygen system. Its sucking air into the system from INSIDE the damn jet engine.

[Pilotasso]

From the compressor, there should be no dirt because thats outside air BEFORE the combustion chamber.

[Avilator]

From the compressor, there should be no dirt because thats outside air BEFORE the combustion chamber.

 

And if there is a compressor stall, the pilot gets a face full of flames and combustion gasses?

[aaron886]

And if there is a compressor stall, the pilot gets a face full of flames and combustion gasses?

 

:doh:

[mvsgas]

Cant believe there is no filtration on the oxygen system. Its sucking air into the system from INSIDE the damn jet engine.

 

There are several, depending on the systems.

Air Cycle System

 

The air cycle system takes bleed air from engines (which comes in to the system at between 1,200-to-2,000 degrees Fahrenheit) and cools it down in the Primary Heat Exchanger (PHX) to approximately 400 degrees. From the heat exchanger, the air is fed into the air cycle refrigeration package (ACRP). The air must be dry, so the system also includes water extractors.

 

The air, when it comes out of the ACRP, is now chilled to approximately 50 degrees Fahrenheit. The flight-critical equipment, the systems that are for keeping the aircraft -flying, are cooled by this air. This air is also fed into the Normalair-Garrett-built On-Board Oxygen Generating System (OBOGS) to provide breathable oxygen to the pilot, to operate the Breathing Regulator/Anti-G (BRAG) valve on the pilot's ensemble, to provide canopy defogging, and cockpit pressurization.

 

http://www.globalsecurity.org/military/systems/aircraft/f-22-fcas.htm

You can find many other link online

[Cali]

F-22 pilots are losing their training edge as the Raptor fleet enters its fourth month of a grounding.

 

http://www.airforcetimes.com/news/2011/08/dn-pilots-losing-edge-as-f22-grounding-drags-on-080411/

[Vekkinho]

only two sims...that's pathetic...

 

I just cannot imagine that Raptor pilots only fly Raptors and have no "license" to strap into a Falcon or Eagle or any other fighter jet.

 

Rerhaps USAF folks should resurrect retired Tomcats!

 

Even in former Yugoslavia (i always come up with Yu as it had a formidable airforce, all todays airforces of former Yu countries are not worth mentioning) pilots would turn to other jets if their primaries were grounded.

 

For instance during 2 month suspention of G-2 galeb in 1985 pilots clocked their flight hours in J-21 jastreb which is similar but had a single seat caockpit and more powerful engine!

Edited August 5, 2011 by Vekkinho

[EtherealN]

Compared to size - Israel? ;)

[RIPTIDE]

Show me ONE country who has a better trained and equiped Airforce than US, except the germans.

I didn't know the Germans had F-22's....

 

 

 

 

;)

[power5]

There are several, depending on the systems.

 

http://www.globalsecurity.org/military/systems/aircraft/f-22-fcas.htm

You can find many other link online

 

None of those are filters.

 

There must be some sort of possible gaseous leak near where the bleed air enters the system. If not, pilots who wear their oxy mask would not be effected. Not sure how big of a tank would be needed to have sealed oxy for F22, but that would definitely fix the problem. Why can't the air just be taken from the nose of the plane? I have no idea about fluid dynamics, but wouldn't the air hitting the nose of the plane enter a hole on the nose just as easily as the hole in the compressor?

[MoGas]

Show me ONE country who has a better trained and equiped Airforce than US, except the germans.

 

The RSAF, well equiped, trained by british and US, I guess, they should not be forgotten..........and (Austria oopps)

 

 

 

;)

[Pilotasso]

From the compressor, there should be no dirt because thats outside air BEFORE the combustion chamber.

 

And if there is a compressor stall, the pilot gets a face full of flames and combustion gasses?

 

lets get this straight, a stall doesnt imply flow backwards form the turbine or combustion chamber. Never heard of it.

 

If the plane has got 2 engines, the affected one should just be shut down, if the plane only has 1 engine and it doest start again...eject. The pilot wont have much to worry about smoke before hitting the silk anyway.

 

An oil leak in the front bearings would result in smoke and smell in cockpit yes, a stall, unlikely, flames is nothing short of sci-fi. :)

[combatace]

AFAIK, compressor stall just means turbulent air entering the intakes and not letting the compressor compress the air to ignite in the turbines. If that happens ignition will stop or in case of stationary engine(mounted for testing purpose) ignited fumes can reach rear stages of turbine causing compressor to completely fail and if fuel flow is not stopped engine will catch fire but no explosion or reverse firing.

[Avilator]

I only mentioned the flames because I have read of incidents where a compressor stall led to flames coming out the front of the engine.

[mvsgas]

None of those are filters.

 

There must be some sort of possible gaseous leak near where the bleed air enters the system. If not, pilots who wear their oxy mask would not be effected. Not sure how big of a tank would be needed to have sealed oxy for F22, but that would definitely fix the problem. Why can't the air just be taken from the nose of the plane? I have no idea about fluid dynamics, but wouldn't the air hitting the nose of the plane enter a hole on the nose just as easily as the hole in the compressor?

 

There are several filters in those systems. The reason to use engine bleed air is to have pressurize air. Every jet aircraft, in service (civil or mil) uses engine bleed air for environmental control system (ECS) Also, scoops for collecting air will affect RADAR cross section (RCS)

 

I wish we can sit next to the aircraft, for me is easier to explain things that way.

[Namenlos Ein]

Air Force pilots reluctant to fly F-22 Raptors citing ongoing oxygen problems

 

Military whistleblowers express fears about F-22 safety

 

Wilson describes his battle to overcome his hypoxia as he flew the F-22 last year. “It was… kind of a surreal experience,” he says, taking “immense concentration” to perform simple tasks. He says he followed his training and attempted to pull an emergency oxygen ring. “I couldn't find it. I couldn't remember what part of the aircraft it was in.” The pilots were told to keep flying despite the danger the incidents posed to them and, potentially, to people on the ground, so the Air Force could learn more about what has wrong with the plane. “We have been told that we are data collectors,” says Wilson.

 

[…]

 

Told by Stahl that she has heard that F-22 pilots are so worried, they have taken out additional life insurance, Wilson says, “They are. Absolutely. We are waiting for something to happen and if it happens, nobody's going to be surprised.”

[ToWcH]

8 F-22 killed 33 F-15C's????!!....please, the reason that happened is because Chuck Norris Wasn't flying :)

[VIKBELL]

Check out 60 min. web site for Raptor design problem.... Those pilots are in trouble, but the plane should be investigated alot more.....

 

http://www.cbsnews.com/sections/60minutes/main3415.shtml

[aaron886]

Holy old news, 60 minutes.

[Snoopy]

Old news, maybe, but the fact of the matter is the problem with the oxygen system was never identified.

[aaron886]

True. And they did have two good interviews even if the interviewer seemed professionally annoying. Seems like hypemic hypoxia to me... the contaminant idea seems to fit latent symptoms, especially the dizziness.