9.3 Design Principle of Gas Generator
The analytic relationship between gas power, thrust, and solid charge gas generator,
and the analytic relationship between gas pressure and characteristic parameters of
charge grain and working nozzle are deduced. The unique analytic relationship
between combustion pressure change rate and relative change rate of characteristic
diameter of charge and nozzle is deduced emphatically. Examples are given to
illustrate relevant engineering applications, and the main parameters affecting gas
pressure and its deviation are discussed. The calculation formula of gas pressure
comprehensive deviation is put forward. To master the key technology of gas
design, the above calculation formula and results are very important.
Gas-powered energy and gas generator design technology have been widely
used in modern tactical ground-to-air missiles because of its advanced and economic characteristics. For gas turbines, such as the American Chaparral missile and
Sparrow missile, they are used to drive generators, such as the Italian Aspide
Fig. 9.42 Amplitude and
phase–frequency
characteristics chart of closed
loop of hydraulic steering
system
9.3 Design Principle of Gas Generator
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