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Percent Power On Take-off  
User currently offlineWardialer From United States of America, joined Sep 2001, 1182 posts, RR: 0
Posted (9 years 7 months 3 hours ago) and read 3160 times:

What percent power do the following aircrafts use on take-off roll?

B747-400
A340-300
B737-700
Gulfstream-V

On a standard day.

4 replies: All unread, jump to last
 
User currently offlineSATL382G From , joined Dec 1969, posts, RR:
Reply 1, posted (9 years 7 months 2 hours ago) and read 3138 times:

You need to give some more info... and the context of your question wouldn't hurt either.

Payload, range required, runway length and elevation, etc....


User currently offlinePhilsquares From , joined Dec 1969, posts, RR:
Reply 2, posted (9 years 7 months 2 hours ago) and read 3130 times:

On the 744 it depends on several factors such as runway length, obstacles in the climb path, temp, pressure alt, aircraft gross weight and flap setting.

Most airlines will attempt to use the lowest power setting required for takeoff. However, there can't be a reduction greater than a 25% reduction from full takeoff power.



User currently offlineXFSUgimpLB41X From United States of America, joined Aug 2000, 4183 posts, RR: 37
Reply 3, posted (9 years 7 months 1 hour ago) and read 3004 times:

On the CRJ the only variable for a standard full power takeoff is temperature.


Typically its around 90% or so.... flex thrust we usually will use an assumed temperature of 48-49 degrees C, which will reduce takeoff N1 to about 85%.



Chicks dig winglets.
User currently offlineG4doc2004 From United States of America, joined Feb 2004, 123 posts, RR: 0
Reply 4, posted (9 years 7 months ago) and read 2991 times:

Gulfstream GIV and GV use about 92% when using "power for the day" or full EPR power, and flex power is around 85-87%, depending on temperature, available runway, etc. Just as XFSUgimpLB41X stated above.


"Failure to prepare is preparing to fail"--Benjamin Franklin
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