Re: Water injection ?

From:         wb8foz@netcom.com (David Lesher)
Organization: NRK Clinic for habitual NetNews Abusers - Beltway Annex
Date:         31 Oct 95 00:31:27 
References:   1
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gernot@vmars.tuwien.ac.at (Gernot Auer (Prak 1 Gerhard)) writes:



>Is there anyone who can support clues how 'water injection' in any way could
>effectively increase engine power?

I once took a HP-7 (a high wing twin turboprop seating about 50)
out of Guatemala City. Guatemala city is higher than Denver.

The captain and I watched as ground crew refilled the tank with
alcohol and distilled water. The captain explained it's injected to
cool the incoming fuel/air mix.

This technique is also used on piston engines. Colder fuel&air mixes
are more dense, hence contain more oxygen, and the expansion % of
such is greater than that of a hotter load.

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