Propellor "reverse thrust"

Date:         20 Aug 97 02:38:35 
Organization: Biled heids 'r us
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On the subject of reverse thrust, I took a flight on a Manx Airlines
Shorts 330 a few years back. When the plane landed, a big roar went up
and the plane slowed dramatically. Do prop planes such as this deploy
reverse thrust by somehow altering the pitch of the propellor blades to
the extent they "blow" air forward? Or is something else taking place?

Just curious..

Steve Howie
Netnews and Listserv Admin
University of Guelph