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-   -   How not to take off in your Robinson!! (https://www.pprune.org/rotorheads/633361-how-not-take-off-your-robinson.html)

nomorehelosforme 18th Jun 2020 10:44

How not to take off in your Robinson!!
 
Came across this today, clearly it wasn't the pilots day.

https://www.liveleak.com/view?t=9e6C9_1592379852


homonculus 18th Jun 2020 10:58


a helicopter failed to take off and fell into the water three weeks after flicking its tail in mid-air
Pulitzer prize to the journo who penned this....

Fareastdriver 18th Jun 2020 10:59

Looks like he tried to do a splash & go.

Hilico 18th Jun 2020 11:21

It felt a bit like less than three weeks between flicking its tail in the air and the impact.

212man 18th Jun 2020 11:35


Originally Posted by homonculus (Post 10814221)
Pulitzer prize to the journo who penned this....

I doubt it was a journalist and almost certainly auto-translated from Chinese!

Bell_ringer 18th Jun 2020 11:49

I think that can go down as 4 take-offs and landings in the logbook :E

TheReverend 18th Jun 2020 12:15


Originally Posted by nomorehelosforme (Post 10814207)
Came across this today, clearly it wasn't the pilots day.

Link deleted

BEWARE, clicking that link brought up a rather unusual image that had to be closed before the Robinson footage could be viewed.

Robbiee 18th Jun 2020 16:16

Soooo, I'm guessing a slippery surface and slow on the pedals?

,...well at least it wasn't a 22! :-)

evil7 18th Jun 2020 17:25

Maybe he forgot that he sold his Clipper last week:}

Two's in 18th Jun 2020 19:31

I've often wondered what would happen if you just yanked the collective without touching the pedals or the cyclic - mystery solved.

Rotorbody 18th Jun 2020 20:04

In all fairness, the aircraft did it's best to fly away from the water. However, the person operating the controls must have had other intentions... Wonder if the water was cold!

Teddy Robinson 18th Jun 2020 21:33

I saw similar behaviour with an R22 at rather close quarters some years ago (dramatic enough for me to dive for cover)
From recollection the incident was something to do with a gust lock or control friction setting which caused a serious PIO as soon as the thing lifted.
Does this make sense ?

I don't fly these machines, but I'm sure that plenty on this forum do and can comment further.

Mutley1013 19th Jun 2020 05:56

To be fair, I don’t think it is how to take off in any helicopter.

kansarasc 19th Jun 2020 12:50

All the humor aside, can someone please elaborate on takeoff technique and hazards from slippery surface like ice? I do not remember reading this in Helo Flying handbook. But one of my instructor mentioned one time to me.

aa777888 19th Jun 2020 13:29


Originally Posted by kansarasc (Post 10815328)
All the humor aside, can someone please elaborate on takeoff technique and hazards from slippery surface like ice? I do not remember reading this in Helo Flying handbook. But one of my instructor mentioned one time to me.

Not sure how that is relevant to the sh*t show referred to by the original post, and this question may be worthy of its own thread, but: when operating from a slippery surface (which is not always ice, some ramps can be incredibly oily and slick), probably the biggest issue is transitioning the main rotor between fight RPM and ground idle RPM (both directions, speeding up or slowing down). Obviously this must be done gently and slowly while working the pedals appropriately to prevent the ship from spinning right around on you. In Robinson helicopters, under slippery conditions I've been trained to turn off the governor and manually control rotor RPM until safely up to flying speed, then turn the governor back on. I operate onto and off of glare ice often in the winter and this works quite well, and of course it works under less slick conditions also. Even if you don't think the conditions are slick always be ready to put some power pedal in when coming up out of ground idle rotor RPM.

kansarasc 19th Jun 2020 13:52

Not sure if this question is relevant to sh*t show displayed here but I asked because Robbiee mentioned slippery surface TO
Governor off during lift off from slick surface is interesting. I will discuss that with my instructor

meleagertoo 19th Jun 2020 13:57

Spraying bugs with helicopters? Whaat?

I wonder what sort of nozzle you'd need to spray helicopters. Some kind of rotary atomiser? It seems an extraordinarily complexand costly way of getting rid of bugs. Why not use an insecticide?

212man 19th Jun 2020 14:32

I wonder if there was a C of G issue with the insecticide tank? It seems to just tip backwards and stick the TR in the water, which no doubt results in loss of TR drive and the subsequent gyrations.

Bell_ringer 19th Jun 2020 15:13

Can piston engines develop sufficient torque to make rpm transitions (usually spinning up not down) tricky?
would think a normally aspirated engine would have all the torque of a wet noodle thrown at a wall.

aa777888 19th Jun 2020 17:54


Originally Posted by kansarasc (Post 10815375)
Not sure if this question is relevant to sh*t show displayed here but I asked because Robbiee mentioned slippery surface TO
Governor off during lift off from slick surface is interesting. I will discuss that with my instructor

In case I wasn't clear enough in my post above, the governor is turned back on prior to pickup. It is only turned off so that the throttle can be opened more slowly above 80%. Once you achieve full RPM you turn the governor back on, then go flying. Upon landing, you can leave the governor on as roll-off overrides the governor, of course.


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