Interesting ?
Thread Starter
Joined: Feb 2000
Posts: 1,992
Likes: 511
From: UK
Next thing you know 212Man shall attempt to convince us it was all done on purpose and not merely because the AFCS kicked off.
Helicopters tend to accelerate rather quickly when pointing straight down like something akin to dropping a set of streamlined car keys.
Ever peg the VSI?
Helicopters tend to accelerate rather quickly when pointing straight down like something akin to dropping a set of streamlined car keys.
Ever peg the VSI?
Joined: Oct 1999
Aviation Qualifications: ATPL
Posts: 7,371
Likes: 926
From: Den Haag
Next thing you know 212Man shall attempt to convince us it was all done on purpose and not merely because the AFCS kicked off.
Helicopters tend to accelerate rather quickly when pointing straight down like something akin to dropping a set of streamlined car keys.
Ever peg the VSI?
Helicopters tend to accelerate rather quickly when pointing straight down like something akin to dropping a set of streamlined car keys.
Ever peg the VSI?
Yes, they do go downhill very quickly with even relatively modest pitch angles. I once hosted the senior design engineer for EGPWS from Honeywell, and we took him on a flight in the S-92. One purpose was to show how obstacle warnings could be a nuisance in a high density environment (lots of NUIs) but we also discussed the Mode 1 alerts and the (then) research into improving offshore modes. The Blackpool AS365 accident was still quite fresh in our minds and I tried to explain how quickly things could escalate. But, words can never replace experience so we carried out a series of dives from about 80 kts, with 5 degrees incremental increases in negative pitch. By 25 degrees he really got the message - I think we were hitting 5,000 ft/min in around 6 seconds!
Joined: Feb 2006
Posts: 557
Likes: 27
From: At home
I happened to witness the incident at Virginia as I was a guest of Starlight on the day. Hard to think it was 20 years ago.How time flies.
I have just been through the old thread and it all comes flooding back.Twenty years ago now. How time flies.
The 407 sat idle for several years in a hangar near ours as there was a huge scrap between tho two owners and their insurers that to the best of my knowledge was never resolved.
Sadly the pilot involved took his own life some years after the incident.
I have just been through the old thread and it all comes flooding back.Twenty years ago now. How time flies.
The 407 sat idle for several years in a hangar near ours as there was a huge scrap between tho two owners and their insurers that to the best of my knowledge was never resolved.
Sadly the pilot involved took his own life some years after the incident.
ZS-Romeo “Inverted” Bravo
Joined: Nov 2010
Posts: 880
Likes: 225
From: Australia
To add to the collection of clips showing helicopters rolling and/or looping, this old footage was brought to my attention:
Sikorsky CH-53A conducting rolls and loops over Long Island Sound in a joint Naval Air Systems Command and Sikorsky trial in 1968:
https://www.facebook.com/reel/1237402674817234
(I hope the Facebook link is retained)
Sikorsky CH-53A conducting rolls and loops over Long Island Sound in a joint Naval Air Systems Command and Sikorsky trial in 1968:
https://www.facebook.com/reel/1237402674817234
(I hope the Facebook link is retained)
Joined: Dec 2000
Posts: 299
Likes: 9
From: uk
Wow, seeing a big helicopter like a CH53 doing this is impressive, thanks for sharing the link.
TEM must have not included "lets do this at an altitude where we have some margin, just in case"
(Starting the loop @ 1150ft and ending it @ 920ft)
TEM must have not included "lets do this at an altitude where we have some margin, just in case"
(Starting the loop @ 1150ft and ending it @ 920ft)
Joined: Jul 2002
Aviation Qualifications: ATPL(H)
Posts: 3,052
Likes: 56
From: UK
https://www.popasmoke.com/ed-creamer/rpg/
