Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Taxiing With TRs Extended  
User currently offlineLiedetectors From United States of America, joined Jul 2005, 360 posts, RR: 0
Posted (9 years 1 week 2 days 18 hours ago) and read 1956 times:

Hey sports fans!

I was sitting in my office today and i notice a Gulfstream G-IV and a Falcon Jet of some kind (and no it wasnt an F-16) taxi by and they had the TRs extended. They were clearly taxiing for T/O as they did soon after, so dont tell me that the pilots didnt retracted them after landing. My question is why were they taxiing with them extended?

Thanks.


If it was said by us, then it must be true.
9 replies: All unread, jump to last
 
User currently offlineKC135TopBoom From United States of America, joined Jan 2005, 12138 posts, RR: 51
Reply 1, posted (9 years 1 week 2 days 18 hours ago) and read 1922 times:

It is common to adjust your taxi speed with the thrust reversers deployed. Occasionally a commerical aircraft will do it. I have seen the TRs deployed here at DFW for airplanes going downhill after crossing one of the taxiway bridges here.

User currently offlineLiedetectors From United States of America, joined Jul 2005, 360 posts, RR: 0
Reply 2, posted (9 years 1 week 2 days 18 hours ago) and read 1877 times:

excellent. yea i just confirmed that information with some co-workers


If it was said by us, then it must be true.
User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 3, posted (9 years 1 week 2 days 9 hours ago) and read 1771 times:

Taxing speed can be reduced with T/Rs & not using the Brakes too.In the Early 90s.Damania Airways,a Pvt Operator had instructed their Staff on Min use of Brakes.Their 1st B737 Brake change appeared after Three months.
regds
MEL



Think of the brighter side!
User currently offlineCitation501SP From United States of America, joined May 2000, 209 posts, RR: 0
Reply 4, posted (9 years 1 week 2 days 2 hours ago) and read 1732 times:

It is pretty common on Gulfstream G-IVs, Falcon 2000's, and Citation X's.

The Engines have a surplus of thrust at idle, enough to still accelerate the aircraft once rolling. So rather than ride the brakes, one side's "buckets" will be put to the wind. Thus saving riding the brakes. Or if going down hill both sides are put out.

Besides it looks great. I love the big buckets on the G-IV's.

501sp



Smoke and Thunder! Stage 2 FOREVER!!!
User currently offlineRedDragon From United Kingdom, joined Jul 2004, 1135 posts, RR: 6
Reply 5, posted (9 years 1 week 1 day 22 hours ago) and read 1679 times:

Quoting HAWK21M (Reply 3):
In the Early 90s.Damania Airways,a Pvt Operator had instructed their Staff on Min use of Brakes.Their 1st B737 Brake change appeared after Three months.

What kind of interval would you expect a brake change after?

Rich


User currently offlineFly707 From United States of America, joined Oct 2001, 350 posts, RR: 0
Reply 6, posted (9 years 1 week 1 day 22 hours ago) and read 1674 times:

May be because the engines are high from ground ( rear section ) .
In other types such as Boeing 767 or airbus 300 engines are so near from ground . Using TRs on these types may cause sand, small stones suction, that will cause engine damage .

Using brakes would be much more cheaper than using TRs during taxing .

Regards .



Without mistakes we will never learn
User currently offlineKcrwFlyer From United States of America, joined May 2004, 3814 posts, RR: 7
Reply 7, posted (9 years 1 week 1 day 21 hours ago) and read 1656 times:

Quoting Fly707 (Reply 6):
Using brakes would be much more cheaper than using TRs during taxing .

Regards .

how, its just idle.


User currently offline777WT From United States of America, joined Jan 2005, 875 posts, RR: 1
Reply 8, posted (9 years 1 week 1 day 20 hours ago) and read 1625 times:

Quoting Fly707 (Reply 6):
Using brakes would be much more cheaper than using TRs during taxing .

Not on most coporate jets. They have brake temp limits for takeoff shall a RTO is needed.

I've seen Gulfstreams use T/R at HPN. Just idle thrust, no additional thrust off idle, otherwise you would hear it roar with it deployed.

If the brakes gets over the limit, then that will cost you time and fuel waiting for it to cool down (idling in the runup area), possibly adding mess to the ground traffic if there are other a/c in line waiting to take off.

Thrust reverse doesn't shorten engine life if it's just deployed but not off idle. Add power while in thrust reverse will considerably shorten the life due to increased EGT.

As for most airliners, they use idle thrust reverse to conserve fuel and engine life unless it's really needed.


User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 9, posted (9 years 1 week 1 day 5 hours ago) and read 1571 times:

Quoting RedDragon (Reply 5):
What kind of interval would you expect a brake change after

Its competitor operating the same type had Brake changes on average 1.5 months.Both operated similiar sectors & no of flts.
regds
MEL



Think of the brighter side!
Top Of Page
Forum Index

Reply To This Topic Taxiing With TRs Extended
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...
Stored/Parked Aircraft With Flaps Extended? posted Mon Nov 13 2006 04:59:56 by Warreng24
Aircraft Taxiing With Spoilers Up? Why? posted Sat Sep 16 2006 22:29:32 by Airfly
What Is The Deal With The Extended Wing Fairings? posted Mon Apr 5 2004 13:13:15 by L-188
Taxiing With The Thrust Reversers Out? posted Sun Apr 4 2004 08:50:58 by Pilottim747
Taxiing With Open Gear Doors? posted Wed Feb 25 2004 02:09:03 by LHSebi
Taxiing With Airbus Efis Flightdecks posted Mon Jun 10 2002 03:08:10 by Soku39
Flying 737 With The Wet Compass Extended. posted Sat Jul 29 2006 19:45:36 by SlamClick
Takeoff With No Flaps Extended, Is It Posible? posted Fri Sep 19 2003 20:29:10 by Capri
Why Do Dash-8's Taxi With Extended Spoilers? posted Thu Dec 13 2001 18:16:36 by Mr Spaceman
A&P Jobs With USAir In PHL posted Tue Nov 14 2006 08:58:20 by MXSUP

Sponsor Message:
Printer friendly format