Curt von Delius hits 200k' with his Phoenix 4 2 stage stack

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RGClark
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Re: Curt von Delius hits 200k' with his Phoenix 4 2 stage stack

Postby RGClark » Tue Nov 06, 2018 11:59 am

Some info on the flight:

https://www.dropbox.com/s/yt96uakns0dos ... 8.pdf?dl=0

Can't tell from this whether the carbon fiber fin can is attached directly to the motor casing, i.e., with no airframes being used.

That a N5800 to N5100 can reach ca. 245K with lightweighting methods such as a carbon fiber fin can and no recovery equipment for the booster stage, suggests a N5800 to N5800 with similar lightweighting may be able to reach 300K.

c.f.,

Amateur rockets to the 100 km von Karman line for suborbital space.
viewtopic.php?f=6&t=6167

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Orbital rockets are now easy, page 2: solid-rockets for cube-sats.
https://exoscientist.blogspot.com/2017/ ... age-2.html

drew
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Re: Curt von Delius hits 200k' with his Phoenix 4 2 stage stack

Postby drew » Tue Nov 06, 2018 12:21 pm

RGClark wrote:Can't tell from this whether the carbon fiber fin can is attached directly to the motor casing, i.e., with no airframes being used.

It was a "flying case" design with Robert. Look at the picture upthread, you can clearly see the fincans are slightly larger in diameter than the motor casings/airframes.

RGClark wrote:That a N5800 to N5100 can reach ca. 245K with lightweighting methods such as a carbon fiber fin can and no recovery equipment for the booster stage, suggests a N5800 to N5800 with similar lightweighting may be able to reach 300K.


The booster DID have recovery hardware (an X-type parachute I believe) but it had a failure and the booster apparently came in ballistic and wasn't recovered.
Andrew Hamilton
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