Reverse scoop

[Paul Lee]

A forward air scoop gets high pressure - air ram. Does a rear facing
scoop generate low pressure (suction)?

[Richard Lamb]

Paul Lee wrote:
>
> A forward air scoop gets high pressure - air ram. Does a rear facing
> scoop generate low pressure (suction)?


Yep. A lot better than the forward facing scoop will create high
pressure.


You can pull on air all day long.
But you can't push on it at all.

Richard

[Charlie England]

Paul Lee wrote:
> A forward air scoop gets high pressure - air ram. Does a rear facing
> scoop generate low pressure (suction)?

Try:
http://www.cafefoundation.org/aprs/localflow2.pdf

'air extractors'

[Richard Lamb]

Charlie England wrote:
>
> Paul Lee wrote:
> > A forward air scoop gets high pressure - air ram. Does a rear facing
> > scoop generate low pressure (suction)?
>
> Try:
> http://www.cafefoundation.org/aprs/localflow2.pdf
>
> 'air extractors'

Thanks Charlie.
Fascinating stuff there.


Richard

[Paul Lee]

Lot of good stuff in
http://www.cafefoundation.org/aprs/localflow1.pdf
too.

Richard Lamb > wrote in message >...
> Charlie England wrote:
> >
> > Paul Lee wrote:
> > > A forward air scoop gets high pressure - air ram. Does a rear facing
> > > scoop generate low pressure (suction)?
> >
> > Try:
> > http://www.cafefoundation.org/aprs/localflow2.pdf
> >
> > 'air extractors'
>
> Thanks Charlie.
> Fascinating stuff there.
>
>
> Richard

[Paul Lee]

And http://www.cafefoundation.org/aprs/localflow3.pdf

Richard Lamb > wrote in message >...
> Charlie England wrote:
> >
> > Paul Lee wrote:
> > > A forward air scoop gets high pressure - air ram. Does a rear facing
> > > scoop generate low pressure (suction)?
> >
> > Try:
> > http://www.cafefoundation.org/aprs/localflow2.pdf
> >
> > 'air extractors'
>
> Thanks Charlie.
> Fascinating stuff there.
>
>
> Richard

[Richard Lamb]

Lot of good stuff in
http://www.cafefoundation.org/aprs
too.

> > Richard

[Blueskies]

I like the propless.pdf file...reminds me of slope soaring the ol' 150 with the power at idle. I would get 3-400 fpm up
at best glide speed often...

--
Dan D.



..
"Richard Lamb" > wrote in message ...
>
>
> Lot of good stuff in
> http://www.cafefoundation.org/aprs
> too.
>
> > > Richard

[Blueskies]

Fun...

--
Dan D.



..
"Bill Daniels" > wrote in message news:GWGec.23554$wP1.53847@attbi_s54...
> Nothing new here.
>
> Back in the 1960's the late Dave Johnson had the glider tow contract at the
> Air Force Academy using Super Cubs with his 180 HP STC. His maintenance
> facilities were at another nearby airport. Whenever a Cub came up lame at
> the AFA, Dave would remove the prop and attach a tow hook he had made long
> ago for just such emergencies. Then he would use one of its stalemates to
> air-tow the Cub back home where the mechanics waited for it.
>
> Sometimes they had to wait a little longer when the pilot of the propless
> Cub would climb away in Rocky Mountain thermals after releasing - on one
> occasion for three hours of silent flight.
>
> Bill Daniels
>
> "Blueskies" > wrote in message
> m...
> > I like the propless.pdf file...reminds me of slope soaring the ol' 150
> with the power at idle. I would get 3-400 fpm up
> > at best glide speed often...
> >
> > --
> > Dan D.
> >
> >
> >
> > .
> > "Richard Lamb" > wrote in message
> ...
> > >
> > >
> > > Lot of good stuff in
> > > http://www.cafefoundation.org/aprs
> > > too.
> > >
> > > > > Richard
> >
> >
>

[Bill Daniels]

Nothing new here.

Back in the 1960's the late Dave Johnson had the glider tow contract at the
Air Force Academy using Super Cubs with his 180 HP STC. His maintenance
facilities were at another nearby airport. Whenever a Cub came up lame at
the AFA, Dave would remove the prop and attach a tow hook he had made long
ago for just such emergencies. Then he would use one of its stalemates to
air-tow the Cub back home where the mechanics waited for it.

Sometimes they had to wait a little longer when the pilot of the propless
Cub would climb away in Rocky Mountain thermals after releasing - on one
occasion for three hours of silent flight.

Bill Daniels

"Blueskies" > wrote in message
m...
> I like the propless.pdf file...reminds me of slope soaring the ol' 150
with the power at idle. I would get 3-400 fpm up
> at best glide speed often...
>
> --
> Dan D.
>
>
>
> .
> "Richard Lamb" > wrote in message
...
> >
> >
> > Lot of good stuff in
> > http://www.cafefoundation.org/aprs
> > too.
> >
> > > > Richard
>
>