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Stillwells for Propellant Gaging
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English
Abstract
Common stillwells attenuate slosh effects in two ways: a decrease in pressure variations with depth and the damping caused by orifices. Often the slosh frequency is near the resonance frequency of the stillwell. Addition of an “inertia tube” can lower the stillwell natural frequency sufficiently to detune the system without seriously increasing the head loss due to propellant outflow. Even in a very short stillwell, where the depth effect is negligible, the “inertia tube” can greatly attenuate sloshing. This paper treats the stillwell as a vibrating system and presents equations for simple stillwells, orifice stillwells, and inertia-tube stillwells.
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Authors
Topic
Citation
Perkins, C., Rivinius, F., and Wood, G., "Stillwells for Propellant Gaging," SAE Technical Paper 640480, 1964, https://doi.org/10.4271/640480.Also In
References
- Lamb Horace Sir “Hydrodynamics.” Cambridge University Press 1932
- Milne-Thomson L. M. “Theoretical Hydrodynamics.” Macmillan & Co. 1938
- Perkins C. K. Wilburn R. D. “Capacitance Mass Sensing of Boiling Propellant.” SAE-ASME Meeting April 1964