Re: Turbo Scram

["Tom Sanderson"]

Bret Cahill" <BretCahill@xxxxxxx> wrote:
> What about a turbo fan where the fan and duct ass. pops off at a
> certain speed?

That would be bruttally complex.  Better to just jettison the whole engine 
and switch to a turbojet, if that's what you really want to do.  Engine 
weight is a relatively small percentage of overall weight for most 
airframes.

> The propulsion equivalent of a gear box.

Lots of aircraft have gearboxes in the drivetrain...nothing new there.

Tom.