My hatch blew off!!

On Sep 7, 6:45*am, Peter Higgs wrote:

Perhaps the best initial solution would be to drill a 10-15mm hole in the
access cover, (or anywhere else really.) which depending upon the airflow,
would act as a static vent... *neither increasing or decreasing the ambient
pressure.


On Sep 7, 6:45 am, Peter Higgs wrote:
Perhaps the best initial solution would be to drill a 10-15mm hole in the
access cover, (or anywhere else really.) which depending upon the airflow,
would act as a static vent... neither increasing or decreasing the ambient
pressure.

I'm not sure I would want an "air spigot" pointing straight out of
the fuselage into the airstream - seems like unnecessary drag versus a
solution that lines the flow up with the external slipstream. The
reverse NACA duct has been shown to work well and it's my
understanding that it even produces a small amount of thrust.

As to altimeter readings - my altimeter is hooked to my tailboom
static ports. I'd recommend it as a general practice if you have
external ports available. My feeling is that any solution that vents
high-pressure fuselage air would yield a more accurate altimeter
reading than not venting but that the differences in any even aren't
that large.

9B

testing please ignore

$52? Here are some other sources for less expensive NACA ducts.
Black and Clear. These come with an intergral "exit" tube at the
larger end. Other sources don't have this tube, just an exit slot the
size and shape of the larger end. Google "naca duct".

Try racerpartswholesale dot com which has both black and clear lexan.

Replace "dot" with a period. Google is blocking this post for some
reason when it contains full URL's.

Thanks.

On Sep 8, 1:45*pm, ContestID67 wrote:
$52? *Here are some other sources for less expensive NACA ducts.
Black and Clear. *These come with an intergral "exit" tube at the
larger end. *Other sources don't have this tube, just an exit slot the
size and shape of the larger end. *Google "naca duct".

Try racerpartswholesale dot com which has both black and clear lexan.

Replace "dot" with a period. *Google is blocking this post for some
reason when it contains full URL's.

Thanks.

Er Guys these are ducts that are inlet..

I need ones that are outlet...