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Spoilers On Takeoff?

Jzucker From United States of America, joined Nov 1999, 100 posts, RR: 0
Posted (11 years 1 week 6 days 20 hours ago) and read 1037 times:

I recently noticed that on take off in a 737, the spoilers seemed to deploy at varying degrees after rotation for a few hundred feet into the climb. Is this a function of the 73's trim?

4 replies: All unread, jump to last

Avt007 From Canada, joined Jul 2000, 2131 posts, RR: 5
Reply 1, posted (11 years 1 week 6 days 18 hours ago) and read 961 times:

I'd suspect you were seeing the roll spoilers deflect as the crew or autopilot put in small roll corrections to stay level.

Theairbusguy From France, joined Sep 2001, 37 posts, RR: 0
Reply 2, posted (11 years 1 week 6 days 12 hours ago) and read 911 times:

it's normal , some spoilers (roll spoilers) are operating with the ailerons.

Positive rate From Australia, joined Sep 2001, 2143 posts, RR: 1
Reply 3, posted (11 years 1 week 6 days 11 hours ago) and read 897 times:

yes what you saw were roll spoilers. They operate with and sometimes without the ailerons depending on the IAS.

Blackbird From , joined Dec 1969, posts, RR:
Reply 4, posted (11 years 1 week 4 days 11 hours ago) and read 783 times:

On the 737, like many aircraft, have flight spoilers that can be used to assist roll-control by deploying asymetrically. Asymetrical deflection helps kill-off lift on that wing, thus lowering it at a more rapid rate than the ailerons could alone. On the 737, once the yoke is turned past 7 degrees the flight spoilers begin to raise asymetrically (the spoilers are not up on the other side).

-Kamarov