I helped restore a 1100. I don't know why but it is one of the aircraft I worked on that sticks with me. Years later a pilot dumped it in the pacific. Sad.
Actually...this is footage of flight testing of the FH1100. On a previous flight they had noticed an odd problem with loss of control after a low-G pushover.
They went out the next day (this video) and tried to recreate the problem. They succeeded but the test pilot was unable to recover properly. In a low-G pushover in a two bladed system the helicopter rolls to the right due to tail rotor thrust above the longitudinal CG combined with zero thrust from the main rotor.
@investigate187 The natural reaction is to apply left cyclic input. If you do that (the short version) the blades flap down so hard they snap the rotor shaft in half and blades can even intersect the cabin. Proper recovery is AFT cyclic to reload the rotor disc and then correct for roll.
They actually show this video at the Robinson Safety Course and according to Tim Tucker (who should probably be believed when it comes to stuff like this). This is a factory test pilot that was instructed to investigate the right roll during a cyclic pushover. The factory recorded this for obvious purposes since they were investigating the causes of the right roll.
This is 100% a low-G condition, not to mention incorrect pilot reaction, but that's because Low-G was unknown at the time.
The structure of the helicopter probably was exposed to forces higher than it was designed to, once it started spinning, inverted, etc. It happens to aeroplanes too.
I'd go along with mast bumping ...teetering rotor systems are extremely intolerant to neg-g conditions...just have a look at the Bell 206's flight load limits..both are positive values
@bavarian325 i thought it looked like he was trying to barrel roll it or something and he just exceeded the design limits of the ship. could be control failure too. ya never know exactly what's going on in the pilot's mind.
looks like mast bumping, main rotor touched tail rotor destroying it causing loss of anti tourqe control, pilot than was somewhat ruff with the cyclic all the way to zero g cutting off the tail entirely, pilot error 100%
When the heli reaches the top of a climb & is nosed-over quickly using forward cyclic, the rotor disc becomes "unloaded", as the upward momentum is keeping the heli aloft (albeit temporarily). Once the disc is unloaded, tail rotor thrust acting above the heli's centre of gravity produces an uncommanded roll around the roll axis, which is what we've seen here (a loaded rotor disc counters this rolling force in normal flight). R44 pilots are normally aware of the dangers of low-g pushovers.
This video was reproduced from a film taken at the Paris Airshow sometimes in the early 1970's The demo pilot was a British guy who was hired for the show and was given instructions by the Factory on the "demo" flight he was to perform. instead, he had his own idea. After the accident, witnesses reported that he was drinking at the bar the night before and was bragging about a special maneuver he was going to impress everyone with, and added no one will forget that. Well He kept his promises.
Not a tail rotor failure, not a tail boom strike, if it was mast bumping it should break off the main rotor (but doesn't), retreating blade stall??? Hmmm, doesn't look to be going fast enough. but what else explains the continuous rapid right roll? Yikes!
I helped restore a 1100. I don't know why but it is one of the aircraft I worked on that sticks with me. Years later a pilot dumped it in the pacific. Sad.
N21X 1 week ago
Actually...this is footage of flight testing of the FH1100. On a previous flight they had noticed an odd problem with loss of control after a low-G pushover.
They went out the next day (this video) and tried to recreate the problem. They succeeded but the test pilot was unable to recover properly. In a low-G pushover in a two bladed system the helicopter rolls to the right due to tail rotor thrust above the longitudinal CG combined with zero thrust from the main rotor.
Continued...
investigate187 5 months ago
@investigate187 The natural reaction is to apply left cyclic input. If you do that (the short version) the blades flap down so hard they snap the rotor shaft in half and blades can even intersect the cabin. Proper recovery is AFT cyclic to reload the rotor disc and then correct for roll.
investigate187 5 months ago
@investigate187
This is the "Mast bumping" known about the two-bladed helicopter ...
Vacothierry 2 months ago
What the hell was he thinking?!?!?
bliglum 7 months ago
They actually show this video at the Robinson Safety Course and according to Tim Tucker (who should probably be believed when it comes to stuff like this). This is a factory test pilot that was instructed to investigate the right roll during a cyclic pushover. The factory recorded this for obvious purposes since they were investigating the causes of the right roll.
This is 100% a low-G condition, not to mention incorrect pilot reaction, but that's because Low-G was unknown at the time.
jaysk8er 8 months ago
BOOMSTRIKE!
Johnny31297 10 months ago
He's dead.
motokid032 11 months ago
.................HOW THE FUCK CAN SOMEONE CRASH AN HELICOPTER ON THE FUCKING AIR?
xXxMartin96xXx 11 months ago
@xXxMartin96xXx boomstrike.
Johnny31297 10 months ago
@Johnny31297
or........is he a noob? :3
xXxMartin96xXx 10 months ago
@xXxMartin96xXx
Maybe he flew into one of Chuck Norris' farts.
1983mjr 7 months ago
@1983mjr
yeah......probably. seriusly, HOW!!!!
xXxMartin96xXx 7 months ago
@xXxMartin96xXx
The structure of the helicopter probably was exposed to forces higher than it was designed to, once it started spinning, inverted, etc. It happens to aeroplanes too.
1983mjr 7 months ago
@1983mjr
yeah.......wind, that is probably, it could be a problem with the tail rotor to
xXxMartin96xXx 7 months ago
@1983mjr ..total fail
bobbya16 4 months ago
@xXxMartin96xXx Tailstrike.
krbosak 6 months ago
I'd go along with mast bumping ...teetering rotor systems are extremely intolerant to neg-g conditions...just have a look at the Bell 206's flight load limits..both are positive values
goatlube 1 year ago
Retreating blade stall!
Ingi25 1 year ago
@bavarian325 i thought it looked like he was trying to barrel roll it or something and he just exceeded the design limits of the ship. could be control failure too. ya never know exactly what's going on in the pilot's mind.
edcoondog 1 year ago
looks like mast bumping, main rotor touched tail rotor destroying it causing loss of anti tourqe control, pilot than was somewhat ruff with the cyclic all the way to zero g cutting off the tail entirely, pilot error 100%
hondacrxrus 1 year ago
poor guy he has the skills but not the right machine to do it whit
7249xxl 1 year ago
was this the first ever attempt at a piro flip????
aidan517 1 year ago
looks like the blade cut the tail rotor.
Sanjacsouth 1 year ago
@ryanpires1234
I have a picture of a hub after a mast bump, where the hub cleanly cut off where it meets the mast. Don't try it. :)
grasuh 2 years ago
Comment removed
bboysk8z 2 years ago
where can i view the picture?
KALEIDOSCOPEN 1 year ago
When the heli reaches the top of a climb & is nosed-over quickly using forward cyclic, the rotor disc becomes "unloaded", as the upward momentum is keeping the heli aloft (albeit temporarily). Once the disc is unloaded, tail rotor thrust acting above the heli's centre of gravity produces an uncommanded roll around the roll axis, which is what we've seen here (a loaded rotor disc counters this rolling force in normal flight). R44 pilots are normally aware of the dangers of low-g pushovers.
rrbushby 2 years ago
This video was reproduced from a film taken at the Paris Airshow sometimes in the early 1970's The demo pilot was a British guy who was hired for the show and was given instructions by the Factory on the "demo" flight he was to perform. instead, he had his own idea. After the accident, witnesses reported that he was drinking at the bar the night before and was bragging about a special maneuver he was going to impress everyone with, and added no one will forget that. Well He kept his promises.
vittonl 2 years ago 4
wow very interesting.. thanks friend
williamacro 2 years ago
@vittonl shut up u fucking moron, the dude is dead, go piss somewhere else.
nolifemerc 4 months ago
Cool, I;ve flown in one of these before. Nice little chopper i tell ya.
Helicopterpilot16 2 years ago
Definitely an uncommanded right-roll caused by an unloaded rotor disc as a result of the low or zero G pushover.
rrbushby 2 years ago
Or could this be a failed barrel roll attempt? (Sorry LUPStud, there is no fog in this video)
Forkmeister 2 years ago
Not a tail rotor failure, not a tail boom strike, if it was mast bumping it should break off the main rotor (but doesn't), retreating blade stall??? Hmmm, doesn't look to be going fast enough. but what else explains the continuous rapid right roll? Yikes!
Forkmeister 2 years ago
I'd say it would have to do with the heavy fog he was flying in
LCPStud 2 years ago
Definately a tail boom strike after the low G or control failure, either way it was not good.
helobelow 2 years ago
Low G push over resulting in mast bumping.
SurfCityVideo 3 years ago 2
It looks like LOW G, but could be some kind of control failure too
deerock7 3 years ago 2
may be an hidraulic fail too .. ??
williamacro 3 years ago
There is no history of Hydraulic system failure in the FH1100, unlike the others, this helicopter is equipped with a dual Hydraulic system.
vittonl 2 years ago
@deerock7 I agree, most likely low G...
helipilot3333 9 months ago
Comment removed
deerock7 3 years ago
A tail rotor failure??? No man, this was a low g pushover!
YIKES!
ASTAR2727 3 years ago
Agreed. Sure didn't yaw right for a tail rotor failure.
rotorznwingz 2 years ago
Penoso, hay más detalles del lugar de este hecho, el año y matrícula del aparato?
UtililinerII 3 years ago