Frequency response of a vaporization process to distorted acoustic disturbances
by Marcus F. Heidmann.

Description

Main Author

Heidmann, Marcus F.

Related Names

United States. National Aeronautics and Space Administration.
Lewis Research Center.

Language(s)

English

Published

Washington, D.C. : National Aeronautics and Space Administration ; 1972.

Subjects

Frequency response (Dynamics)
Rocket engines > Rocket engines / Combustion.

Summary

The open-loop response properties expressed as the mass vaporized in phase and out of phase with the pressure oscillations were numerically evaluated for a vaporizing n-heptane droplet. The evaluation includes the frequency dependence introduced by periodic oscillation in droplet mass and temperature. A given response was achieved over a much broader range of frequency with harmonically distorted disturbances than with sinusoidal disturbances. The results infer that distortion increases the probability of incurring spontaneous and triggered instability in any rocket engine combustor by broadening the frequency range over which the vaporization process can support an instability.

Note

Prepared at Lewis Research Center.
Cover title.

Physical Description

32 p. : ill. ; 27 cm.

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