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From: BRUC%MIT-MC@sri-unix.UUCP
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Message-ID: <13327@sri-arpa.UUCP>
Date: Sun, 9-Sep-84 14:16:00 EDT
Article-I.D.: sri-arpa.13327
Posted: Sun Sep  9 14:16:00 1984
Date-Received: Fri, 14-Sep-84 05:53:23 EDT
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From:  Robert E. Bruccoleri <BRUC @ MIT-MC>


Subject:B-70 Fold down wing tips and other gimmicks of aeronautical engineering

Contrary to popular opinion, the fold down wing tips of the XB-70 were designed
to generate lift from the shock wave coming off the engine assembly under the
wing. The six engines were enclosed in a housing which was extended far enough
forward to accomplish this. NASA was involved with this project as well.

Pusher propellers are more efficient than tractor propellors because
they do not spoil the airflow over the wings.

Bob Bruccoleri