Re: B747 technical questions

Date:         28 Jul 97 01:13:27 
From:         David Lednicer <>
Organization: Analytical Methods, Inc.
References:   1
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187 wrote:
> Some questions:-
> 1) For the 5th engine which can be installed on the pod under the wings,
> can it be used as part of the aircraft's engine thereby making the
> aircraft run on five engines?

	When the 5th engine is installed, it is inactive - it gets no fuel.  To
prevent the engine from windmilling, which is a very high drag state, a
special inlet is fitted to change the inlet area and hence, massflow.

David Lednicer             | "Applied Computational Fluid Dynamics"
Analytical Methods, Inc.   |   email:
2133 152nd Ave NE          |   tel:     (206) 643-9090
Redmond, WA  98052  USA    |   fax:     (206) 746-1299