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Old Feb 10, 2012, 04:46 PM
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Joined Jan 2012
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Fail safes and other heli prtection

I can see (now that I've started purchasing parts for my first large helicopter) that its not uncommon for you guys to have $500-$2000 of 'stuff' flying in the air and that one fatal crash can cost hundreds if not more.

Would there not be a market for parachutes or other deployable devices that would save a helicopter from falling from some of the heights they fly? How about a rocket that would thrust the helicopter to a higher altitude and then deploy a parachute and allow it to safely come to the ground.

I know if I had a large helicopter (600-700 size or greater) at a high altitude and hit rough wind or lost signal, and saw it tubling out of the sky, I would be greatful for an automated recovery system of some type.

Maybe I'm crazy....
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Old Feb 10, 2012, 05:14 PM
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Quote:
Originally Posted by broderp View Post
I can see (now that I've started purchasing parts for my first large helicopter) that its not uncommon for you guys to have $500-$2000 of 'stuff' flying in the air and that one fatal crash can cost hundreds if not more.

Would there not be a market for parachutes or other deployable devices that would save a helicopter from falling from some of the heights they fly? How about a rocket that would thrust the helicopter to a higher altitude and then deploy a parachute and allow it to safely come to the ground.

I know if I had a large helicopter (600-700 size or greater) at a high altitude and hit rough wind or lost signal, and saw it tubling out of the sky, I would be greatful for an automated recovery system of some type.

Maybe I'm crazy....
Such devices just would not be practical as electic helis don't just drop or fall out of the sky. They crash because the pilot hits the ground because he becomes disoriented in flight and loses control or gets the heli into a posisition he is not really familiar with and moves the sticks the wrong way. A parachute wold do nothing to assist with these issues as they happen very quickly and it's over before you realize what happened.
Thre are however many advances or "bail out" features that are starting to be available with some of the new flybarless and 3 axis gyros on the market.

I have the Skookum 720 flybarless gyro and it will self level at the flip of a switch on my TX. If I get into trouble all I have to do is lift my stick to gain altitude to get away from the ground and let the self level feature take over. There are also GPS assisted versions that even have self takeoff and "bring me home and land" features, but this technology is not cheap at this time.
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Old Feb 11, 2012, 05:55 PM
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True failsafe for heli is the last settings the rx goes to just in case of rx/tx failure. I'm estimating that more than 80% (may be more) of pilots on this forum do not set failsafe.
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Old Feb 11, 2012, 05:59 PM
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The most important failsafe to set is throttle off.
Not to save the heli, but to reduce the amount of damage it will do to whatever it hits.

Pat MacKenzie
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Old Feb 11, 2012, 09:33 PM
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Joined Jan 2007
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Absolutely- the throttle failsafe is the only one I do consistently, but I do. I figure on a heli the others probably won't do much good. Back in the PCM days, throttle failsafe could also save your knuckles if you forgot and plugged in the heli before turning on the TX.
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Old Feb 12, 2012, 02:36 AM
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i set my cutoff for a few degrees positive pitch and no throttle, hope it never comes to using it but figure it would have some ability to auto rotate down. more likely is that i would maybe have time to shut down the throttle if not in 3d mode which would be in effect about the same as shutting down by the switch. Overall im in agreement with Xrayted and most of my crashes have been over before i knew it was going down. and to design a system to automatically save you from a crash in a fraction of a second would probubly be beyond the cost of and ability of the heli to carry. the saving grace seems to be that the expense of fixing seems to work out more resonable than what the op quoted, not hundreds of dollars but more like the cost of a new set of blades and maybe a bent up rotor head or broken landing gear parts, my crashes have not been unrealistically expensive. i used my last crash with my exi 500 to upgrade to a new fbl head and gyro. so kind of a loose/win situation. lol
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Old Feb 12, 2012, 02:41 PM
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North West Louisiana
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Blade Holder

I set mine for zero throttle, and a combination of elevator and collective to park the main blades just right for the blade holder. I've yet to pluck up the courage to turn off my TX with the heli in flight, and my usual flying site is probably not large enough for that to be accomplished safely anyway. At least I get to test the operation of the failsafe on the ground at the end of every flying session....
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Old Feb 15, 2012, 10:47 PM
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Quote:
Originally Posted by chopper62 View Post
True failsafe for heli is the last settings the rx goes to just in case of rx/tx failure. I'm estimating that more than 80% (may be more) of pilots on this forum do not set failsafe.
I set failsafe to neutral cyclic, 0 pitch and 0 throttle, but that just means it'll fall out of the sky like a brick.
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Old Feb 16, 2012, 01:28 AM
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I have a Co-Pilot and set failsafe to zero throttle, -2 collective and Co-Pilot on. I hope that this will result in an auto of some kind. I should also put in a little forward cyclic. That covers a Tx failure.

For the rest, altitude and Co-Pilot, although I still crash, just less.
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