PrimoPyro1990
.... Composite Rocket Fuels ....
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nature. Neither the BBS or author providing this information
can be considered responsible for the use of this file.
The person using this knowledge is solely responsible for
it's use or misuse. This file is intended to educate only.
1.) Introduction
Composite propellants are solid rocket fuels that are composed of separate
fuels and oxidizers mixed together in one homogenous mass. This propellant
is then either molded into a grain to be inserted in an engine or cast in an
engine casing and left to harden. The fuels and oxidizers taken separately
are generally unreactive. Composite propellants are used in a number of
engines. There are engines that use water for fuel and an oxidizer, air for
an oxidizer like a ramjet, and a liquid/solid engine that can be throttled.
The rocket motors discussed here a best built by the amateur with propellant
weights below 2 lbs. and preferably under 1 lb. This is still powerful enough
to shoot a sizable rocket to well over 4 miles altitude.
[...Slettet...]
9.) Testing and Firing
You should construct a few engines exactly the same and test fire a
number of them to find out what to expect when you finally do launch a rocket
. The engines can be buried nozzle end up in the ground and fired. Time the
burning of the engine to figure out the rate of combustion of the propellant.
Inspect the casing to see how it stood up. If everything seems okay you can
construct a static testing fixture to measure the thrust. Keep in mind that
even a small engine can put out a few hundred pounds thrust for a split
second. When you do launch a rocket, keep people away from the launch site
and under cover. Check out the skies for airplanes or other traffic. Don't
launch rockets under conditions of low visibility or heavy winds.
*** Kilroy was here ***