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Old January 16th 09, 06:57 PM posted to rec.aviation.piloting
Kingfish
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Posts: 470
Default Strange 747/Pratt & Whitney project

On Jan 16, 1:23*pm, Tech Support wrote:
Ricky

A couple of WAGs.

1. Use PT-6 turbo prop to help take offs with max gross, hot day and
high altitude field.

2. Make normal 4 engine take off and at cruise altitude start PT-6
turbo prop and shut two engines down. This config would save a lot of
fuel and help bottom line.

3. New version of PT-6 and 747 airframe used as test bed. Qualify
another (bigger) engine for UAV use to carry heavier load.

4.Testing at high altitude for possible use on UAV .


The testbed idea sounds plausible. #2 is probably not likely due to
prop's inefficiency at high mach.