Go Back  PPRuNe Forums > Flight Deck Forums > Tech Log
Reload this Page >

rolling a 707

Wikiposts
Search

Notices
Tech Log The very best in practical technical discussion on the web

rolling a 707

Thread Tools
 
Search this Thread
 
Old 18th September 2010 | 21:38
  #1 (permalink)  
Thread Starter
 
Joined: Jan 2010
Posts: 77
Likes: 0
From: melbourne australia
rolling a 707

is there any truth in the rumour that if a boeing 707 is rolled, either deliberately or accidentally the wings will be damaged sufficiently to fail on a later flight.

the 707 prototype was famously rolled over a boat show crowd with no problems but perhaps its wings were stronger
lynn789 is offline  
Reply
Old 18th September 2010 | 21:48
  #2 (permalink)  
 
Joined: Mar 2007
Posts: 1,235
Likes: 0
From: USofA
There is no truth to that rumor but...don't do it.
Spooky 2 is offline  
Reply
Old 18th September 2010 | 22:22
  #3 (permalink)  
100 Countries Visited
20 Anniversary
 
Joined: Jan 2006
Posts: 2,480
Likes: 2
From: In a far better place
The famous barrel roll in question was accomplished by Alvin M. "Tex" Johnston on August 7th, 1955 over Lake Washington, in the Boeign prototype which was the Boeing 367-80 which was similar in looks only, but completely different to the production model B707. The Boeing 367-80 was in other words a proof of concept aircraft wich was 132" in diameter whilst the 707 is 144" in diameter to accomodate 6 accross in economy.

You can do any manuever in any aircraft without causing any damage to the aircraft provided that you do not exceed any of the designed load limitations. Bob Hoover, a test pilot, is probably one of the most brilliant demonstration pilots in the history of aviation that has proven this fact in many aircraft.
captjns is offline  
Reply
Old 18th September 2010 | 22:31
  #4 (permalink)  
 
Joined: Mar 2006
Posts: 1,974
Likes: 0
From: Choroni, sometimes
Oh no, not again

07s have been rolled, 720 have been rolled.

Many times, but sometimes subject to death......
hetfield is offline  
Reply
Old 18th September 2010 | 22:35
  #5 (permalink)  
100 Countries Visited
20 Anniversary
 
Joined: Jan 2006
Posts: 2,480
Likes: 2
From: In a far better place
The 720 was rolled?!?! Who would perform such a dasterdly maneuver such as that!?!?!
captjns is offline  
Reply
Old 19th September 2010 | 00:03
  #6 (permalink)  
20 Anniversary
 
Joined: Jun 2001
Posts: 3,991
Likes: 8
From: UK
"You know that, we know that...just don't do it anymore!"

"You know that, we know that...just don't do it anymore!"
fireflybob is offline  
Reply
Old 19th September 2010 | 01:26
  #7 (permalink)  
15 Anniversary
 
Joined: Jan 2008
Posts: 761
Likes: 9
From: Herts, UK
Of course...
The world famous Alex Henshaw barrel rolled Lancasters during production test flights occasionally - a straight 1g maneouvre, usually with something or other balanced on the instrument coaming. He said they handled just like a 4-engined Spitfire...

A 617 Sq. pilot returning from a Tallboy or Grand Slam raid, coming across a straggling B17, barrel rolled his Lancaster right around it (allegedly)!
617 Lancs were a bit 'slipperier' and lighter than std ones, without a dorsal turret and some other gubbins.Of course, with a 22,000lb Grand Slam hanging half out of their 30 ft bomb-bay, they would struggle to 20,000 ft.

.. and then Geoffrey de Havilland attracted attention to the Mosquito's phenomenal performance with his single-engined loops during demos for the top brass, on both sides of the Atlantic. Very impressive for a twin-engined bomber in 1941

Searchlight escape maneouvres were rapidly descending corscrews... rolling would be pointless.
HarryMann is offline  
Reply
Old 19th September 2010 | 05:14
  #8 (permalink)  
50 Countries Visited
15 Anniversary
 
Joined: Nov 2007
Aviation Qualifications: ATPL
Posts: 1,954
Likes: 30
From: Texas
Why would the rules of aerodynamics not apply to one type of aircraft? You do a roll correctly, the main thing you notice is the ground at the top of the windshield. You do one badly and it can get very ugly very fast.
MarkerInbound is offline  
Reply
Old 19th September 2010 | 10:07
  #9 (permalink)  
15 Anniversary
 
Joined: Aug 2009
Aviation Qualifications: ATPL
Posts: 615
Likes: 56
From: GPS L INVALID
Lets sum up - you can roll any aircraft if you have enough energy to play with - if you do a proper barrel roll by the book you will get an acceleration somewhere between 1 and 2 g if you dont overdo it - 720 has been rolled (for nothing more than spits and giggles to my knowledge)... Concorde has been rolled multiple times as far as I know, don't see why you couldnt do it on say a 737-700 today.
STBYRUD is offline  
Reply
Old 19th September 2010 | 10:40
  #10 (permalink)  
20 Anniversary
 
Joined: Jan 2004
Posts: 3,246
Likes: 202
From: Here and there
Originally Posted by HarryMann
a straight 1g maneouvre...
An oft repeated fact that is of course completely false. A barrel roll and any other manoeuvre that involves pitch changes cannot be limited to 1g. You can make a barrel roll entirely positive, and you can make the g loadings low, but you cannot keep them at 1g which is the loading you start with flying straight and level.
AerocatS2A is offline  
Reply
Old 19th September 2010 | 12:44
  #11 (permalink)  
15 Anniversary
 
Joined: Jan 2008
Posts: 761
Likes: 9
From: Herts, UK
Correct, thanks!
HarryMann is offline  
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.