The key
and bottleneck of research on the tip-jet rotorcompound helicopter lies in the power system. Computational Fluid Dynamics
(CFD) was used to numerically simulate the gas generator and rotor inner
passage of the tip-jet rotor compositepower system, studying the effects of intake mode,
inner cavity structure, propellant components, and injection amount on the
characteristics of the composite power system. The results show that when a
single high-temperature exhaust gas enters, the gas generator outlet fluid is
uneven and asymmetric; when two-way high-temperature exhaust gas enters, the
outlet temperature of the gas generator with a tilted inlet is more uniform
than that with a vertical inlet; adding an inner cavity improves the
temperature and velocity distribution of the gas generator's internal flow
field; increasing the energy of the propellant is beneficial for improving the
available moment.
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