Model rockets can withstand huge acceleration forces, so they tend to use
high impulse, high force motors with fast burn times. Then coast to apogee.
You can model all this stuff in a free program called open rocket. You put
in your dimensions and weights and the motor specs and it tells you how
On Mon, 14 Nov 2022 17:25:43 -0500 mitch--- via Mercedes
wrote:
> I did the gravity calculation, using rough numbers.
> A one lb rocket traveling 4000 fps (roughly mach 4 anyway) would have
> 249,000 ft-lb of energy.
> Which is what you'd need to throw it 249,000 feet up a 1G gravity well
> in
I did the gravity calculation, using rough numbers.
A one lb rocket traveling 4000 fps (roughly mach 4 anyway) would have
249,000 ft-lb of energy.
Which is what you'd need to throw it 249,000 feet up a 1G gravity well
in a perfect vacuum.
So yes, a rocket traveling at Mach 4.1 can indeed coast
We do some of that, but inly Level 1 not Level 3. You get a waiver from FAA
and communicate with controlling authority. A lot of these launch from up
near Mojave at the FAR site (Friends of Amateur Rocketry). It has a tower
and concrete bunkers and all.
On Mon, Nov 14, 2022, 7:16 AM OK Don via
Yes, you get clearance from the FAA, they route traffic around the area,
issue a NOTAM, and fine you if you stray from your assigned area. Amaeur
rockets were launched at the Ft Sill (SW OK) firing range once or twice a
year when I was a kid - don't know if they still do.
On Mon, Nov 14, 2022 at
There are a number of areas in the western Nevada desert that are restricted
airspace for such things. Rocketry clubs use them for their fun and games. I
would also expect you would have to file a request with the FAA to put up a
NOTAM for such activity as well.
-D
> On Nov 13, 2022, at 10:13
On 2022-11-13 22:01, Craig via Mercedes wrote:
On Sun, 13 Nov 2022 13:16:34 -0500 mitch--- via Mercedes
wrote:
https://www.youtube.com/watch?v=4QsEPEhq5yk
Pretty phenominal effort!
I was asked in a least a couple of the replies, but no answer was
given,
how did they get permission to do
> how did they get permission to do that?
Probably didn't ask?
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On Sun, 13 Nov 2022 13:16:34 -0500 mitch--- via Mercedes
wrote:
> https://www.youtube.com/watch?v=4QsEPEhq5yk
Pretty phenominal effort!
I was asked in a least a couple of the replies, but no answer was given,
how did they get permission to do that?
I was interested in rockets when I was in
https://www.youtube.com/watch?v=4QsEPEhq5yk
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