Flight spoiler purpose
Thread Starter
Join Date: Jul 2005
Location: Asia
Age: 45
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Flight spoiler purpose
Hello Internet aviation gurus,
I am presently sitting a type rating course for a FBW aircraft. The course material talks about the multi-purpose flight spoiler by mentioning that the purpose is to (1) Enhance roll control, (2) Reduce airspeed and (3) airbrake.
My question is what ever can be the difference between (2) and (3)???
Please speculate and enjoy trying to understand my english.
I am presently sitting a type rating course for a FBW aircraft. The course material talks about the multi-purpose flight spoiler by mentioning that the purpose is to (1) Enhance roll control, (2) Reduce airspeed and (3) airbrake.
My question is what ever can be the difference between (2) and (3)???
Please speculate and enjoy trying to understand my english.
Join Date: May 2000
Location: Seattle
Posts: 3,195
Likes: 0
Received 0 Likes
on
0 Posts
They are the same, as you describe.
In reality, you can use them to either slow down, or prevent acceleration, or increase rate of descent, or some combination. The end result depends on the pitch input you provide along with their use.
FBW has nothing to do with it.
In reality, you can use them to either slow down, or prevent acceleration, or increase rate of descent, or some combination. The end result depends on the pitch input you provide along with their use.
FBW has nothing to do with it.
Join Date: Feb 2000
Location: HON121º/14 NM
Posts: 664
Likes: 0
Received 0 Likes
on
0 Posts
In the air the airbrake can increase the rate of descent for a given airspeed, or assist in slowing the aeroplane while in level flight. On the ground the speedbrake (the same bits, but different purpose now) reduce the lift produced by the wing, thereby putting more weight in the wheels, thereby squashing the tyres, increasing the contact area of rubber on tarmac, thus increasing the effectiveness of the brakes. I have heard quoted that speedbrakes (or spoilers) increase the effectiveness of the brakes during the roll out by up to 30 per cent.
Join Date: Jan 2006
Location: US
Posts: 2,205
Likes: 0
Received 0 Likes
on
0 Posts
Asymmetrical deployment for roll.
Symmetrical deployment in flight for drag(reduce airspeed of increase rate of descent).
Symmetrical deployment on ground. Increase brake effectiveness by increasing weight on wheels but also has a drag effect.
Symmetrical deployment in flight for drag(reduce airspeed of increase rate of descent).
Symmetrical deployment on ground. Increase brake effectiveness by increasing weight on wheels but also has a drag effect.
