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| The British Amateur Space / Rocket Programme |
| THE PERFORMANCE OF HYBRID ROCKET MOTORS |
It is commonly thought that hybrid motor performance, although
reasonable, is not spectacular. This is not the case. Although the
performance of most hybrid motors falls in the 200 - 300 seconds
specific impulse range, it is possible to get specific impulse figures of
400 - 500 seconds, by using metallised fuels, such as Lithium/Lithium
Hydride and Beryllium in a HTPB (Hydroxyl Terminated Poly Buta-diene) binder, combined with an oxidiser such
as Fluorinated Liquid Oxygen. The drawback to these propellants though
is that unlike the other hybrid propellants, they are much less
environmentally friendly.
Typical Propellant combinations:
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