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HomeAircraftHelicopterMain Discussion › Chopper pilot killed doing loop-the-loop
08-12-2010 12:38 AM  8 years agoPost 41
bcopters500

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Texas

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A little bit of everything was wrong that day!

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08-12-2010 01:09 AM  8 years agoPost 42
PC12DRVR

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USA

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^ Ouch

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08-12-2010 01:12 AM  8 years agoPost 43
Aaron29

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USA

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If he had no cyclic that would not have happened..
Perhaps he had a momentary binding of the controls or some sort of temporary failure.

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08-12-2010 01:15 AM  8 years agoPost 44
PC12DRVR

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USA

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Its all speculation as peviously stated there is no black box in these helis, and its looks like it was in europe, if it were here in the US you could go and read the accident synopsis in a month or two, which would most likely read, "pilot error" usually when they can't determine the cause of an accident due to everything being burnt to a crisp, and they have video like such, it will lead to a pilot error diagnosis.

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08-12-2010 01:34 AM  8 years agoPost 45
brandov2

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az

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Aaron.. I agree ..But after seeing many crashes.. And this one, he had cyclic control. we will see when the report comes out.. I am not trying to argue or cause a scene. Its just he did not lose cyclic, probably just got to low for what he was doing.
I agree with PC12 its all speculation , but after seeing the vid it looked like pilot error.. Just my 2 cents. I have been working and flying Helis for years, its mostly pilot error , not machine failure that causes wrecks. But sometimes there is mechanical. The 500 has a really simple control system , its hard to believe it was control failure.. In the end its all bad someone is dead and they have to put man power into it to try to figure it out..
People dying in aircraft sucks, but it is part of flying, They usually know the risks involved.

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08-12-2010 01:37 AM  8 years agoPost 46
wingtip

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Indiana

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if you re read what i wrote it is a very plausable explanation for the temp loss of hydraulic power to the controls... its the same concept as a fuel tank klunk line in a fuel tank... if you make the klunk line to long it wont be able to drop when inverted and will suck air and die due to the fuel being up top now and the pickup still at the bottom...

im wagering the hydraulic resevoir pickup (probably fixed position) is at the bottom and when he went inverted all the fluid went to the top of that tank and it sucked air... the controls went dead, he was pulling full back cyclic and when it got primed again is when you saw the SUDDEN cyclic change near the bottom of the loop...but by then it was to late and to low.

True besides the aircraft not modified for doing this, there was some pilot error, as all are in agreement that was very dam low entry into the loop...

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08-12-2010 01:40 AM  8 years agoPost 47
PC12DRVR

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USA

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if you re read what i wrote it is a very plausable explanation for the temp loss of hydraulic power to the controls...
We already had a pilot familiar with the MD 500 tell us it does not have a hydraulic system. Its a pretty small and lightwiehgt heli.

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08-12-2010 01:43 AM  8 years agoPost 48
wingtip

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Indiana

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ah then my bad... i had missed that somehow.... then it is very interesting on what happened so all can learn from his unfortuneate accident..

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08-12-2010 03:55 AM  8 years agoPost 49
Tail_BoomStrike

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N.A.

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Here is a much clearer video.... Try it on 480p:

Watch at YouTube

This one shows some of the routine before the loop:

Watch at YouTube

Here's a link to what one of the Russian competitor think might have happened: http://en.belapan.com/archive/2010/...dia_air_press/#

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08-12-2010 04:03 AM  8 years agoPost 50
brandov2

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az

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Exactly it has no hydraulics at all.. Its actually trim motors that assist.. No hydraulics on it..And the fact that that helicopter cannot sustain any negative g.. He was probably positive the whole time .. Like I said not trying to be a expert or argue ..But facts are facts

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08-12-2010 04:09 AM  8 years agoPost 51
FenderBean

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Fort Hood TX

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You can't fix stupid, way to low to try that in full size due to the pos pitch require all the way through. I fly helicopters for real and to do a loop I would be a min of 3-4k up

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08-12-2010 04:13 AM  8 years agoPost 52
Aaron29

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USA

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I bet he had done many loops before this accident.

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08-12-2010 04:58 AM  8 years agoPost 53
shawgl

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Murrieta, CA

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Regardless of how many he did prior..... He won't be doing another one. I know it has been stated that the 500 doesn't have hydraulics.... This is for the guy who thinks a hyd system is like a fuel system. Sounds good in principle however if you have a hydraulic system and it does get air in the system it takes a heck of a lot of control cycles to get the air out of an actuator. It's not like a clunk where as soon as it gets back in the fuel all is well. You have to cycle the actuator full motion at a minimum of 10 times. I can't imagine anyone doing aerobatics in a helicopter without a pressurized hyd system or like the 500 which has fixed linkage controls.

In God we trust, everyone else we monitor.

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08-12-2010 06:37 AM  8 years agoPost 54
shawmcky

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Isle of Wight,United Kingdom

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The whole routine
looked pretty hairy and on the edge right until the crash,my heart was in my mouth,ifeel sorry for the relatives.It reminds me of when we fly and those immortal words"Hey watch this".Tragic.

Team- unbiased opinion.K.I.S.S principle upheld here

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08-12-2010 12:14 PM  8 years agoPost 55
Greybird

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Davie, Florida

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Certainly no expert here. But, It looks to me like he had control the whole time. Looks like he was caught in the heli's downwash, and could not get enough lift to recover. Even with RC heli's, the bottom of that loop needs a ton of lift to pull out. I would guess even at a proper altitude, that loop would lose a lot of altitude at the bottom with full scale.

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08-13-2010 04:34 PM  8 years agoPost 56
mrloudly

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Naseby Northampton England

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That hits terra firma hard! Watch the decent rate closely, I doubt the impact was survivable, ruptured diaphragm and all sorts of nasties... Hopefully the old boy knew not a lot!

RIP

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HomeAircraftHelicopterMain Discussion › Chopper pilot killed doing loop-the-loop
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