Looping a lynx - control inputs?
Thread Starter
Joined: Feb 2002
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From: Northern England
Looping a lynx - control inputs?
I enjoyed watching the Blue Eagles at Middle Wallop on Saturday.
Curious - can anyone explain the control inputs needed for the back flip from high hover?
Imagine being the first person to try that!
The usual "don't try this at home or in a R22" apply....
Curious - can anyone explain the control inputs needed for the back flip from high hover?
Imagine being the first person to try that!
The usual "don't try this at home or in a R22" apply....
Joined: Nov 2006
Posts: 118
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From: UK
Not sure on the inputs required for a lynx....but model helicopters are thus:
Collective up (Lots of power), cyclic back to drop tail, as aircraft starts to rotate past about 90 degrees, drop collective back down and allow the aircraft to flop backwards (Upside down)....again once the aircraft has rotated far enough, bring the power back up to pull the ship round to level(hopefully the right way up)...
Collective up (Lots of power), cyclic back to drop tail, as aircraft starts to rotate past about 90 degrees, drop collective back down and allow the aircraft to flop backwards (Upside down)....again once the aircraft has rotated far enough, bring the power back up to pull the ship round to level(hopefully the right way up)...
They don't always go to plan.
Joined: Apr 2000
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From: EGDC
Before you do the display you check on the ground that you can get absolutely full aft cyclic without any restrictions such as the 5 point harness buckle getting in the way.
For the manoeuvre it is 1000' in the hover (some prefer a gentle climb) ideally into wind, ASE out (the gyros will topple anyway) but with the yaw channels in for stability, a deep breath and then full aft cyclic with some left as well to oppose the pitch roll couple that occurs on the Lynx. Hold it and look up for the horizon (just like looping a FW) and then you start to feed in forward cyclic to compensate for flapback. The extra drag on the TOW booms helps control the speed on exit.
It can be done from 1000' hover and recovered to a 700' hover for a second go but it's a lot of 'G' and rattling.
If you can manage to say 'Howaayyy ya foooka' in a Geordie accent as you initiate the manoeuvre then you get extra style marks
For the manoeuvre it is 1000' in the hover (some prefer a gentle climb) ideally into wind, ASE out (the gyros will topple anyway) but with the yaw channels in for stability, a deep breath and then full aft cyclic with some left as well to oppose the pitch roll couple that occurs on the Lynx. Hold it and look up for the horizon (just like looping a FW) and then you start to feed in forward cyclic to compensate for flapback. The extra drag on the TOW booms helps control the speed on exit.
It can be done from 1000' hover and recovered to a 700' hover for a second go but it's a lot of 'G' and rattling.
If you can manage to say 'Howaayyy ya foooka' in a Geordie accent as you initiate the manoeuvre then you get extra style marks
Joined: Jul 2005
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From: Stuck on 50:30 North
Imagine being the first person to try that!
I stand to be corrected on this, but I believe this 'back flip' is credited to an old mate of mine Ray Turner (AAC).
Got to admit it looks BRILL
from the ground but, apparently, is "quite interesting" from inside!
Just had my 6 monthly and altough I did need to impress my examiner - I didn't try this one!
Does anybody know how to fly this thing?
I stand to be corrected on this, but I believe this 'back flip' is credited to an old mate of mine Ray Turner (AAC).
Got to admit it looks BRILL
from the ground but, apparently, is "quite interesting" from inside!Just had my 6 monthly and altough I did need to impress my examiner - I didn't try this one!
Does anybody know how to fly this thing?
Joined: Apr 2000
Aviation Qualifications: ATP+Mil
Posts: 10,959
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From: EGDC
It feels odd because, unlike a loop where you go up before you go down, with a back flip you just fall out of the sky backwards - almost the most fun you can have with your clothes on
Joined: Dec 1999
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From: UK
I'd like to have been a fly on the wall when the "first time" pilot's CO saw it!
Hmm, praps he was the CO...
And a thought has occurred.
If this is no more than a flip-over then is there any reason why it has to be done backwards? Why not a bunt?
Hmm, praps he was the CO...
And a thought has occurred.
If this is no more than a flip-over then is there any reason why it has to be done backwards? Why not a bunt?
Joined: Jul 1999
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From: Warrington, UK
If this is no more than a flip-over then is there any reason why it has to be done backwards? Why not a bunt?
Joined: Nov 2007
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From: Poland
Joined: Feb 2006
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From: On the big blue planet
So, you're in the hover at 1000' and sharply push the cyclic forward as far as it will go, and hold it there until the world's the right way up again. Yeah. Right.
Im looking forward to see the coming videos
skadi
Joined: Dec 1999
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From: UK
Mighty Gem, instead of sneering please use your evidently mighty intellect to inform us why, "when you're in the hover at 1000' and sharply push the cyclic forward as far as it will go, and hold it there until the world's the right way up again" is so obviously differrent to pulling it back sharply until ditto?
If you can...
If you can...
Joined: Mar 2005
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From: Kammbronn
I stand to be corrected on this, but I believe this 'back flip' is credited to an old mate of mine Ray Turner (AAC).
Another mate, John Carr, offerred to take me along for a demo during my Lynx course. It was veto'd by the grown-ups, although I'm not sure if they were trying to protect me or prevent me from getting ideas above my station.
Personally, I think it's a very impressive move.
Joined: Sep 2007
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From: Thailand
G.W. told me back in May that he was the first person to carry out this maneuver.
He was not shooting the sh1t, but the tale came out as a follow up to the conversation we where having, we had not seen each other since we both served on the same Sqn 20 years before.
john
He was not shooting the sh1t, but the tale came out as a follow up to the conversation we where having, we had not seen each other since we both served on the same Sqn 20 years before.
john