717 certification stall test

jtrain609 said:
Look at the airspeed, I don't think there was enough energy to roll the wings level. Pretty sure the nose dropped straight down because the airplane stopped flying.

Also consider that he DC-9's ailerons are powered by tabs, and thus have to be flying to be effective eh.
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Good point.
 
Nick said:
Do we have a consensus that the jumpseater gets up immediately following the recovery to head to the lav because he pooped his pants?
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One would hope that the jumpseater would be a test pilot school graduate or an engineer -- either way, would know perfectly well that this was not some close brush with death.
 
jtrain609 said:
Prepare to meet your end, good sir.
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Am I the only one who thought the right seat flight instructor was trying to smack his right hand off the yoke and back onto the throttle? I mean we call them primary skills for a reason!
 
JeppUpdater said:
I just...I dunno...Jesus Christ...



FWIW I've no idea the background on this video, but it is pure awesome. If you don't have respect for the guys who test the airlines we lazily fly day in, day out, you will after this.
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I don't know if that was as awesome as you think. I'm not sure those were test pilots. Test pilots don't typically have a little love fest after each maneuver.
I don't know what they were going for in the vid. It's hard, and generally silly, to critique a maneuver when you don't know what it is. But if it was a stall recovery, I'm going to have to be the Bulgarian Judge and give 'em a 3. All kinds of wrong if stall recovery. If it was an intentional incipient spin entry, I'd also judge poor. If it was a supposed to be a developed stall entry, well they didn't get there either.
I couldn't see the speed tape, so it's hard to know how fast they got on recovery. Seemed fast. Seemed like a tentative pull out. But if it was getting as fast as it seemed, that's a problem. If you ever find yourself inadvertently nose down in a jet (or any other airplane), you should be pulling right to the edge of the stall to get recovered ricki tick. You have a lot more margin in over G loading than you do in overspeeding.
 
New comment on Vimeo:

Dutch 1 hour ago


Very Nice guys. I like to see my companies (Global Flight Research) Upset Recovery training Program has broken through the political walls. This training was developed in 1989 in the MD88 and progressed through the DC-9 series and into the 717. TWA was the first (launch customer) 717 US operator then Midwest Express (Airlines) and Air Tran acquired them.
Unfortunately the airlines feel their simulator training adequately prepares their pilots for these upset situations. Unfortunately it does not! proven by our 'Real Flight' evaluation program of trained airline and corporate pilots currently on line.
The price of safety! Be careful out there!
 
Crop Duster said:
I don't know if that was as awesome as you think. I'm not sure those were test pilots. Test pilots don't typically have a little love fest after each maneuver.
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I was going to say something similar. If you listen closely, you'll hear somebody say "whoops" right as the left wing drops.
 
One of the science channels had a show on the certification of an Airbus- I think it was the 330. The one that really caught my eye was the flutter test. They nose it over until they get flutter. You could tell the rest pilots and flight engineers were pretty nervous about this test. Everyone was required to wear parachutes during the test, but they all knew that was a joke and the odds were that no one would make it out if things went wrong. The videos should be required viewing for new highers- we might be able to get rid of that "The barber pole is a goal" mentality in some.
Somewhat related I had a buddy at Ft Rucker killed doing Vmc testing in the C-23. Guess itvwas not recoverable and from 10,000' none of them (PIC, CP, FE), could make it out.
 
Crop Duster said:
I couldn't see the speed tape, so it's hard to know how fast they got on recovery. Seemed fast. Seemed like a tentative pull out. But if it was getting as fast as it seemed, that's a problem. If you ever find yourself inadvertently nose down in a jet (or any other airplane), you should be pulling right to the edge of the stall to get recovered ricki tick. You have a lot more margin in over G loading than you do in overspeeding.
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If you listen, when they are nose down but right before the pull, you can hear the overspeed clacker, so they exceeded barber pole.
 
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