Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Reverse Thrust Induced Turbulence On Tails  
User currently offlineKDTWflyer From United States of America, joined Jun 2004, 828 posts, RR: 1
Posted (10 months 3 weeks 6 days 7 hours ago) and read 3019 times:

I got this Gulfstream IV landing in PTK yesterday and noticed the horizontal stabilizer dancing around like crazy (almost like that inflight flutter footage from NASA but less extreme) during the rollout phase on 9R. My only guess is that it is from the reverse thrust jet blast hitting the horizontal stabilizer however I have not seen it before as much as this. Check it out...

http://youtu.be/9RTwfHNDPvI


NW B744 B742 B753 B752 A333 A332 A320 A319 DC10 DC9 ARJ CRJ S340
6 replies: All unread, jump to last
 
User currently offlineGoBoeing From United States of America, joined Jun 2000, 2694 posts, RR: 15
Reply 1, posted (10 months 3 weeks 6 days 7 hours ago) and read 3009 times:

Yep, lots of bouncing around back there.

I don't have any time in Gulfstreams but when I was on the ERJ, if you put in a good amount of reverse thrust the yoke would shake a lot from the tail buffeting around. On the ERJ, and I'd imagine every other t-tail out there most likely, idle was not enough to do this. Only when the engines were spooled up would it buffet to that extent.


User currently offlineANITIX87 From United States of America, joined Mar 2005, 3303 posts, RR: 13
Reply 2, posted (10 months 3 weeks 5 days 17 hours ago) and read 2764 times:
Support Airliners.net - become a First Class Member!

Watch a 747 takeoff from the right angle and you'll see the entire empennage shake like crazy (especially the horizontal stabilizer). That's obviously not reverse thrust, but still cool to see.

TIS



www.stellaryear.com: Canon EOS 50D, Canon EOS 5DMkII, Sigma 50mm 1.4, Canon 24-70 2.8L II, Canon 100mm 2.8L, Canon 100-4
User currently offlineoly720man From United Kingdom, joined May 2004, 6705 posts, RR: 11
Reply 3, posted (10 months 3 weeks 5 days 14 hours ago) and read 2704 times:

The reverse thrust doesn't hit the tailplane directly, it's pointing forwards and up ahead of the tailplane.

But, as the reverse jet spreads and slows down into a very turbulent mess it will move backwards due to the forwards motion of the aircraft. So it's a very disturbed area of flow that causes the vibration of the tailplane, rather than direct impact.



wheat and dairy can screw up your brain
User currently offlineJetlagged From United Kingdom, joined Jan 2005, 2548 posts, RR: 24
Reply 4, posted (10 months 3 weeks 4 days 6 hours ago) and read 2506 times:

It's not just the stabiliser bouncing around. The disturbed airflow due to reverse thrust can cause a loss of directional stability.


The glass isn't half empty, or half full, it's twice as big as it needs to be.
User currently offlinezeke From Hong Kong, joined Dec 2006, 9041 posts, RR: 75
Reply 5, posted (10 months 3 weeks 4 days 5 hours ago) and read 2496 times:

Quoting ANITIX87 (Reply 2):

Look at a 777 also.



We are addicted to our thoughts. We cannot change anything if we cannot change our thinking – Santosh Kalwar
User currently offlinewingscrubber From UK - England, joined Sep 2001, 848 posts, RR: 0
Reply 6, posted (10 months 3 weeks 3 days 16 hours ago) and read 2355 times:

Some nice thrust reverser CFD visualisation here, scroll down to page 15-
https://www.hpcuserforum.com/presentations/October2010China/RecentApplikcationsofCFDtotheDesignofBoeingCommercialTransports.pdf



Resident TechOps Troll
Top Of Page
Forum Index

Reply To This Topic Reverse Thrust Induced Turbulence On Tails
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
Reverse Thrust On The A380. posted Sat Feb 16 2013 14:41:29 by audidudi
Why No Reverse Thrust On Landing In ATL? posted Fri Feb 8 2008 17:12:26 by BR715-A1-30
Inflight Reverse Thrust On DC 8 posted Tue Dec 4 2007 11:58:02 by 6YJCX
Reverse Thrust On Props posted Wed Sep 27 2006 06:40:29 by AirWillie6475
Question On Turboprop Reverse Thrust posted Wed Aug 2 2006 21:43:00 by Bio15
Why Use Reverse Thrust On Long Runways posted Tue Jan 11 2005 10:15:14 by JumboJim747
Reverse Thrust On Falcon 900EX posted Thu Dec 2 2004 21:31:21 by TupolevTu154
Why Do Engines Rumble On Reverse Thrust? posted Fri Aug 20 2004 13:51:28 by NoelG
Reverse Thrust On Old 737s posted Thu Apr 8 2004 08:30:46 by Concord977
Reverse Thrust On Push Back posted Wed Aug 20 2003 22:59:19 by B752fanatic

Sponsor Message:
Printer friendly format