[NSRCA-discussion] Fw: The New F/A-22 does things airplanes cannot do.
Del K. Rykert
drykert2 at rochester.rr.com
Sun Aug 26 06:29:17 AKDT 2007
This was my first glimpse of seeing this aircraft. Hope others find it as impressive. Link is at the bottom.
Del
The New F/A-22
Fast (super-cruise*) and stealthy, and integrated avionics are cool, but
what's really impressive is the F/A-22s low speed stability and
maneuverability. In the late 40s and to early 60s aeronautical engineers
were going nuts on how to shape intakes to handle both subsonic and
super-sonic air flows, without stagnation or compressor stalls. Supersonic
in itself was a big challenge because you had to use shock waves to slow the
intake air mass to sub-sonic before it hit the compressor blades, or they
would stall. The engineers figured it out, but the solution was keeping a
lot of air going in the front end to make sure the all hot air kept go! nag
out the back end. As you watch this Mach 2 airplane suspend motionless in
air and do tail slides, be aware of the truly amazing performance of the
engines and intakes.
Some used to think the Su-27 / Su-31 "Cobra" maneuver was the epitome of 3rd
to 4th generation fighter maneuverability. That snap maneuver doesn't hold a
candle to what this two-dimensional vectored-thrust fighter with fat
independent horizontal stabs can do at low speed. There must be far more
tricks up its sleeve in the high subsonic dogfight speed range.
The video is about 5 minutes long but the last 30-40 seconds are priceless.
ACC recently approved the Raptors new DEMO profile. This was the first show.
Five minute video.
Watch the elevators of the airplane in this demo. They work independently.
It also has vectored thrust.
ACC = Air Combat Command (for the non-Air Force folks)
*Supercruise: The F/A-22 can sustain supersonic flight without the use of
fuel-gulping afterburners.
http://www.f22-raptor.com/media/video_gallery/videos/F22_AirShow_Langley.wmv
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