Anyone know if the F22 OBOGS system is fixed yet?

Nothing anywhere about it. Kind of a big deal considering the cost of the things

Bill

As of today at 1233 Zulu they are saying they will be airborne September 21st.

Sweet!

I feel much safer with those in the air playing chase to the UFO`s than those worn out old
Eagles

Are you inside the fence? or do you know someone who is?

Im assuming they are pulling the air in from a different location now?

Bill

www.spacewar.com...

Cool, good call

reply to post by Camperguy
The system is not fixed, the USAF have merely cleared the Raptor to return to active flight status with restrictions. It's hard to fix something when you dont really know what is wrong with it.

I haven't yet seen any detail of what the restrictions are just that certain types of maneuvers that seem to exacerbate the problem are banned until further notice.

And the problem isn't just with the F-22, it has been known to occur with other types as well.

LEE.

reply to post by thebozeian


Do you think that the big wigs have taken the common sense step of comparing fighter aircraft with oxygen systems that do NOT have this problem, and the system that they are currently using ? It seems like a logical first step, but logic and the behavior of powerful bodies do not always go hand in hand in all matters.

Thought I read that while the system is pretty similar to exsisting obogs the intake position and materials that the plane is made of are somehow getting past the filtration. Who knows if the guys who built the damn thing cant figure it out ,its pretty damn scary. I hope they wouldnt buy anymore if it really is the pilots becoming oxygen deprived or chemically contaminated. If its just because the plane is so extreme that guiys are going into g-lock while just cruising around thats something else. You would think the plane has the software to take over flight if the pilot passes out.

Bill

Originally posted by Camperguy
Thought I read that while the system is pretty similar to exsisting obogs the intake position and materials that the plane is made of are somehow getting past the filtration. Who knows if the guys who built the damn thing cant figure it out ,its pretty damn scary. I hope they wouldnt buy anymore if it really is the pilots becoming oxygen deprived or chemically contaminated. If its just because the plane is so extreme that guiys are going into g-lock while just cruising around thats something else. You would think the plane has the software to take over flight if the pilot passes out.

Bill

what kind of software, I'm just curious about that.

Originally posted by mrmusicmr

Originally posted by Camperguy
Thought I read that while the system is pretty similar to exsisting obogs the intake position and materials that the plane is made of are somehow getting past the filtration. Who knows if the guys who built the damn thing cant figure it out ,its pretty damn scary. I hope they wouldnt buy anymore if it really is the pilots becoming oxygen deprived or chemically contaminated. If its just because the plane is so extreme that guiys are going into g-lock while just cruising around thats something else. You would think the plane has the software to take over flight if the pilot passes out.

Bill

what kind of software, I'm just curious about that.

Same one that the Global Hawk uses.

Bill

reply to post by mrmusicmr
mrmusicmr,

I believe what Camperguy is referring to is an auto recovery to wings level mode that is possible to build into pretty much any modern digital flight control system. The system can either be automatic and cued by monitoring flight parameters and or more advanced ideas like monitoring pilot biometrics (once the aircraft or pilot steps outside these parameters the safety system switches in) or enabled by the pilot through a so called "chicken switch". I remember this being talked about in the late 80's and early 90's when it was proposed that what would become the Eurofighter would be fitted with such a self protection measure and the USAF refused to even consider such a move for the F-22. Sure seems smart to let a $100 million+ state of the art fighter and possibly its $10-20 million pilot plow into the ground because of fighter jock mentality pride than have a simple self protection measure installed and available.

The stupidity and irony of this can be seen in two ways. First we have ejection seats whose idea is to save the pilot in a last ditch attempt and which have been resoundingly successful, a quick check shows that Martin-Baker alone have saved well over 7300 lives in the last 60 odd years. Yet when first proposed many pilots looked at the idea with a certain disdain, a pilot was either supposed to bail out with his parachute of their own accord or go down with the ship. Second, Pilots are not really in control of their modern day fighter anyway, essentially they merely input command requests and the flight control system either accepts those requests and carries it out the best way it sees fit via predetermined parameters, or it vetoes the input and only allows an approximate maneuver inside the hard stops built into the system eg: pitch limiters. Essentially ever single modern digital combat aircraft have these limits inbuilt with perhaps only different selectable levels of pilot authority, for example a wartime combat mode that allows the most extreme maneuver levels that may be necessary and would in peacetime eat into the airframe life. It would be analogous to WWII era war emergency boost on engines that provided extra power when really needed but at cost to the engines lifespan.

LEE.

I live about two miles outside of Langley Air Force Base here in Virginia. When the F22s are flying you cant miss them Lots of jet noise here. But they are not flying.

As a matter of fact..this whole area...from Langley down to Virginia Beach...there has been a noticeable abscence of Jet noise from fighter type aircraft. Outside of the occasional airline jet high in the overheads...there has not even been much Heavy multi engined traffice overhead in the Tidewater Area.

Compared to years past...I notice this abscence of air traffic of all kinds.


What I do notice with regularity is the helicopter traffice going up and down the James River daily to and fro Fort Eustis. Also some E2 Hawkeye aircraft with the radar saucer in the pattern for Norfolk Navy Base. The occasional E3 in the COD configuration in the same pattern...but no heavy aircraft nor much fighter traffic of any kind.

The abscence and silence is to me deafining.


Oh...and this also means that someone is sitting on a huge lot of jet fuel.

Thanks,
Orangetom

I stand corrected. Yesterday I was on my scooter while traveling across town and I heard jet noise. Looking up I saw two F22s from out at Langley in the pattern rising up from over the runway and going around again.

It is the first time in months that I have seen these aircraft flying.

Not that many flying that I can tell but I did see two of them up and about. Until yesterday I was unaware that they were back in the air.

Thanks,
Orangetom