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HeliTorque :: View topic - Tail rotor failure recovery
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HeliTorque Forum Index » Flight Safety

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Tail rotor failure recovery
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davh12
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PostPosted: Sat Aug 07, 2010 4:53 pm    Post subject: Tail rotor failure recovery Reply with quote

Anybody out there ever hear of a sub-system that assists a craft in the event of catastrophic tail rotor failure? Or is that the same situation a pilot would be in if the "Jesus Nut" comes off?

Just curious toothy2 .......maybe a parachute.....hehe...more like salad shooter.

Regards,

Dav
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mungo5
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PostPosted: Sat Aug 07, 2010 9:23 pm    Post subject: Reply with quote

There's a thread on the 'other' forum about actual tail rotor failures.

Nothing there about any sort of protection, but plenty of people who've experienced the problem.

Quite enlightening.
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Ascend_Charlie
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PostPosted: Sun Aug 08, 2010 2:07 am    Post subject: Reply with quote

No sub-systems,mainly because there is nowhere to put them. Where would you put a parachute? In a dome on top of the rotor head? In the tail fin? No, there are just techniques to try to cope with the problem.

Too many variables to have a set procedure - is it a jammed pedal, or loss of control linkage, or loss of drive, or has it fallen off and taken half the fin with it? Even simulators have trouble duplicating it, due to the lack of hard data to write the software around.

Suffice to say, a little airspeed works wonders.
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flip2
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PostPosted: Sun Aug 08, 2010 2:44 am    Post subject: Reply with quote

AS332 has a spring-loaded rod in the tail rotor assembly which fixes a positive pitch on the tail rotor blades in the event of control failure. Of no use in the event of loss of drive, or component loss
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davh12
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PostPosted: Mon Aug 09, 2010 11:43 pm    Post subject: Reply with quote

Thank you to all of you................and I was joking about the parachute.

Regards,

Dave
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Stevie
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PostPosted: Tue Aug 10, 2010 8:33 am    Post subject: Reply with quote

Quote:
I was joking about the parachute


Off topic I know - but I do remember (a long time ago) seeing film of some tests of a helicopter ejection/extraction system that was played with by the US military where the main rotor blades were 'released' with some sort of explosive bolt and the crew were 'extracted' by rockets that dragged them out sideways.
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davh12
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PostPosted: Tue Aug 10, 2010 10:31 am    Post subject: Reply with quote

I don't think I would have liked being the one testing it out. Hope they used dummies first....hehe...... Shocked

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Dave
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LoachBoy
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PostPosted: Wed Aug 11, 2010 7:12 pm    Post subject: Reply with quote

If it helps......

...... I had a 'situation' during my second lot of solos during PPL - reducing power and getting the nose down recovered the situation (I had been in an OGE hover, about 600ft - don't ask, long story).

All slightly sweaty, but probably the best lesson I ever had in the cockpit!

NB. It was loss of tail rotor authority - the wind had shifted, etc etc!
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Ascend_Charlie
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PostPosted: Thu Aug 12, 2010 12:24 am    Post subject: Reply with quote

Loach Boy, you perhaps were going backwards - very hard to tell from 600' up, and the ASI doesn't tell the truth!

Good to see you applied the correct recovery and the only damage was to your underwear!
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Ascend_Charlie
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PostPosted: Thu Aug 12, 2010 12:24 am    Post subject: Reply with quote

Loach Boy, you perhaps were going backwards - very hard to tell from 600' up, and the ASI doesn't tell the truth!

Good to see you applied the correct recovery and the only damage was to your underwear!
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LoachBoy
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PostPosted: Thu Aug 12, 2010 5:40 pm    Post subject: Reply with quote

AC - was def at zero groundspeed... an old air-dog once advised to pick a point to the front, and one to the side to maintain position......

Being wet(ter) behind the ears, I simply hadn't reacted quickly enough to wind direction.

Fortunately, it all happened so chuffing quickly that underwear remained intact...... unlike poor instructor's nerve-endings!!! (Sorry CP).

Still, 2 good lessons learned that day!!! Shocked
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animalsticks
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PostPosted: Fri Aug 13, 2010 10:37 pm    Post subject: Reply with quote

i was there that day training with pete, could have happened to anyone;
cp went white as you spun down; i think we all felt a bit sick at that moment - nice recovery - happy ending Cool
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LoachBoy
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PostPosted: Sat Aug 14, 2010 8:34 pm    Post subject: Reply with quote

Damn... you mean there were witnesses??? (Apart from ATC, fire crews....... and poor old CP).

We got through several cups of coffee that afternoon! Embarassed

But as you say, happy ending, and lessons learned...... don't do what you're not comfortable with, and ATC's instruction isn't always absolute, especially if it conflicts with the former!!!
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