Re: May America lose the Iraq war

From: Bill Unruh (unruh@string.physics.ubc.ca)
Date: 03/25/03 

From: unruh@string.physics.ubc.ca (Bill Unruh)
Date: 25 Mar 2003 04:31:56 GMT

ararghNOSPAM@NOT.AT.enteract.com writes:

]On Mon, 24 Mar 2003 13:12:08 GMT, "Don Chiasson"
]<don_chiasson@notmail.com> wrote:

]>
]><ararghNOSPAM@NOT.AT.enteract.com> wrote in message
]>news:vtts7vofojofidrotnqmi0tqc1epnaevla@4ax.com...
]>> On Mon, 24 Mar 2003 02:19:19 GMT, "Don Chiasson"
]>> <don_chiasson@notmail.com> wrote:
]>>
]>> <snip>
]>> >I think you are referring to ground spoilers: flaps that hinge
]>> >out the top of the wing and break the lift of the wing. Once
]>> >they deploy, the aircraft will not take off again. There have
]>> >been a couple of cases of ground spoilers being accidentally
]>> >deployed while in flight, and the aircraft tends to drop like a rock.
]>
]>> Could be. However, I saw them go up & down during descent, and then
]>> down just before or as landing occurred. And the plane did slow down.
]>>
]>> My memory is somewhat hazy on this. After all, it must have been 20
]>> years ago. That is about when I decided that I did not like airplanes
]>> (and the air transport system as a whole), and could see no reason for
]>> getting on one again.
]>
]>Those are flaps. Could be leading edge, trailing edge, slots, etc. Flaps
]>add lift, used for take off and landing but at the cost of adding drag
]>which slows you down.

Air brakes ( those hinged flaps on the top of the wing) are used to
bleed off speed. I have seen them deployed ( partially, not fully) in
the air as the plane begins to slow down for landing-- ie 20 min befor
landing.-- and yes, I am alive.) On landing they are typically fully
deployed (ie almost perpendicular to the wing). They are certainly
controllable.

And air brakes are not thrust reversers ( which come out at the back of
the engines to deflect the output in a forward direction.)

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