Go Back  PPRuNe Forums > Aircrew Forums > Rotorheads
Reload this Page >

How not to take off in your Robinson!!

Rotorheads A haven for helicopter professionals to discuss the things that affect them

How not to take off in your Robinson!!

Old 18th Jun 2020, 11:44
  #1 (permalink)  
Thread Starter
 
Join Date: Mar 2011
Location: London/Atlanta
Posts: 335
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

nomorehelosforme is offline  
Old 18th Jun 2020, 11:58
  #2 (permalink)  
 
Join Date: Sep 2007
Location: london
Posts: 728
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....
homonculus is offline  
Old 18th Jun 2020, 11:59
  #3 (permalink)  
 
Join Date: Oct 2006
Location: UK
Posts: 5,076
Looks like he tried to do a splash & go.
Fareastdriver is offline  
Old 18th Jun 2020, 12:21
  #4 (permalink)  
 
Join Date: Feb 2003
Location: Harwich
Age: 62
Posts: 757
It felt a bit like less than three weeks between flicking its tail in the air and the impact.
Hilico is online now  
Old 18th Jun 2020, 12:35
  #5 (permalink)  
 
Join Date: Oct 1999
Location: Nigeria
Age: 54
Posts: 4,807
Originally Posted by homonculus View Post
Pulitzer prize to the journo who penned this....
I doubt it was a journalist and almost certainly auto-translated from Chinese!
212man is online now  
Old 18th Jun 2020, 12:49
  #6 (permalink)  
 
Join Date: Jun 2016
Location: Brantisvogan
Posts: 773
I think that can go down as 4 take-offs and landings in the logbook
Bell_ringer is offline  
Old 18th Jun 2020, 13:15
  #7 (permalink)  
 
Join Date: Apr 2020
Location: Terra Firma
Posts: 1
Originally Posted by nomorehelosforme View Post
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.
TheReverend is offline  
Old 18th Jun 2020, 17:16
  #8 (permalink)  
 
Join Date: Sep 2018
Location: California
Posts: 372
Soooo, I'm guessing a slippery surface and slow on the pedals?

,...well at least it wasn't a 22! :-)
Robbiee is offline  
Old 18th Jun 2020, 18:25
  #9 (permalink)  
 
Join Date: Aug 2013
Location: Europe
Posts: 144
Maybe he forgot that he sold his Clipper last week
evil7 is offline  
Old 18th Jun 2020, 20:31
  #10 (permalink)  
Below the Glidepath - not correcting
 
Join Date: Jun 2005
Location: U.S.A.
Posts: 1,738
I've often wondered what would happen if you just yanked the collective without touching the pedals or the cyclic - mystery solved.
Two's in is offline  
Old 18th Jun 2020, 21:04
  #11 (permalink)  
 
Join Date: Jan 2003
Location: Europe
Posts: 12
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!
Rotorbody is offline  
Old 18th Jun 2020, 22:33
  #12 (permalink)  
 
Join Date: May 2004
Location: Bear Island
Posts: 559
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.
Teddy Robinson is offline  
Old 19th Jun 2020, 06:56
  #13 (permalink)  
 
Join Date: Apr 2019
Location: England
Posts: 55
To be fair, I donít think it is how to take off in any helicopter.

Last edited by Mutley1013; 20th Jun 2020 at 16:48. Reason: Miss a word, Oops. (That isnít the word)
Mutley1013 is offline  
Old 19th Jun 2020, 13:50
  #14 (permalink)  
 
Join Date: Aug 2019
Location: USA
Posts: 16
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.
kansarasc is offline  
Old 19th Jun 2020, 14:29
  #15 (permalink)  
 
Join Date: Apr 2010
Location: USA
Posts: 664
Originally Posted by kansarasc View Post
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.
aa777888 is online now  
Old 19th Jun 2020, 14:52
  #16 (permalink)  
 
Join Date: Aug 2019
Location: USA
Posts: 16
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
kansarasc is offline  
Old 19th Jun 2020, 14:57
  #17 (permalink)  
 
Join Date: Mar 2018
Location: Central UK
Posts: 489
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?
meleagertoo is offline  
Old 19th Jun 2020, 15:32
  #18 (permalink)  
 
Join Date: Oct 1999
Location: Nigeria
Age: 54
Posts: 4,807
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.
212man is online now  
Old 19th Jun 2020, 16:13
  #19 (permalink)  
 
Join Date: Jun 2016
Location: Brantisvogan
Posts: 773
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.
Bell_ringer is offline  
Old 19th Jun 2020, 18:54
  #20 (permalink)  
 
Join Date: Apr 2010
Location: USA
Posts: 664
Originally Posted by kansarasc View Post
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.
aa777888 is online now  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.