Re: Braking

Date:         17 May 97 15:15:47 
From:         faurecm@halcyon.com (C. Marin Faure)
Organization: Northwest Nexus Inc.
References:   1 2
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In article <airliners.1997.1089@ohare.Chicago.COM>,
ctillier@leland.Stanford.EDU (Clemens Emanuel Tillier) wrote:

> Thomas.Enblom <thomas.enblom@era.ericsson.se> wrote:
>
> >When continuing with CX to Frankfurt the same aircraft this time only
> >used air brakes (and probably wheel brakes) in order to slow down.
>
> Correct me if I'm wrong, but isn't the whole point of spoilers ("air
> brakes") to dump the lift and get the weight on the wheels as quickly as
> possible, such that the wheels can brake effectively?  As I understand it
> the extra drag from spoilers wouldn't slow the aircraft much, compared to
> wheel brakes.  Could someone confirm/deny?

You are correct.  The spoilers play no role in atually slowing the plane,
only in preventing it from ballooning back into the air and transferring
weight to the wheels as quickly as possible.

C. Marin Faure
  author, Flying A Floatplane