What's new
Van's Air Force

Don't miss anything! Register now for full access to the definitive RV support community.

Cowl Inlet Area

A question...

I am trying to keep up with the thoughts about the exit air.
The question I have is being that the engine is an air pump, what is the velocity of the air exiting the exhaust pipes? I know that it is in pulses, so I guess the average is the important number. Is it faster than the slip stream or slower?

If it is faster, then couldn't it be harnessed in some way to speed up the cooling air before it reenters the slip stream?

Kent
 
kentb said:
what is the velocity of the air exiting the exhaust pipes? I know that it is in pulses, so I guess the average is the important number. Is it faster than the slip stream or slower?

If it is faster, then couldn't it be harnessed in some way to speed up the cooling air before it reenters the slip stream?

Kent
Click to expand...

Augmenter tube is the term, already been done.

http://jetex.org/motors/motors-accessories.html

http://www.answers.com/topic/augmenter-tube

Note the thrust claim for the Jetex.
 
Last edited:
RV, please post the pix if you think that anyone would like to see them. And for you and Howard, I'm going to the dentist in the morning in Santa Maria and I'll be going to my hangar afterward and if I remember I will take a picture of the Coanda lip. I'm also in the process of making a form to use in making a cuff for a Hartzell blade. I used modeling clay which sets up hard and then can be scraped, filed, and sanded. 'Hope this clay-mation works out!
 
You must log in or register to reply here.
Back
Top