744 spoilers not fully deploying

[kbrockman]

BTDT

Been there, Done that.

[parabellum]

747 wing - this aircraft is amazing at aerodynamic breaking.

Boeing won't agree with you. Boeing will tell you that there is no advantage, (and possibly a disadvantage i.e. increased landing roll), to attempting to hold the nose off for aerodynamic braking effect. The B747 wing is a high speed wing and a shorter landing roll can be achieved by flying the nose gear straight onto the runway as soon as the main gear has touched and getting as much weight as possible on the wheels as soon as possible.

Delta wing aircraft? Well that is a different story.

[john_tullamarine]

Been there, Done that.

So obvious when it's explained.

Thanks for that .. duly entered alphabetically into the back of the head acronym list.

[singpilot]

One of the F/A's I flew with had a long string of follow-on's to all of our BTDT's.

Got The T-Shirt, Sent The Post Card, Maxxed Out The Credit Card....

It went on for some time.

[Bullethead]

There's a corollary JT,

BTDTGTTS

BTDT got the tee shirt!

and if you really want to extend it

BTDTGTTSASIOE

BTDTGTTS and sold it on eBay!

The rediculosity just increases!

Regards,
BH.

[zondaracer]

Parabellum is correct. Most large jet aircraft actually have negative angle of attack once the nosewheel is on the ground. When the spoilers deploy, they eliminate residual lift. This is to maximize braking action of the wheels.

[muduckace]

parabellum

Hey what boeing want's to say is fine with me. I think there is some politics involved (rev thrust from engine manufaturers and airline policy). I am just speaking from what I have seen and input from classic 74 drivers.

Aircraft weight certainly is a factor in the wing and fuscelage drag performance. I would like to hear some more oppinions of 74 classic drivers on this matter.