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The Practical Design of Fluid Injection Thrust Vector Control Systems
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English
Abstract
The rocket system designer has many alternate choices which must be made during selection of a thrust vector control subsystem. Some suggestions for making these choices are:
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1.
The best point of fluid injection usually occurs about one-third of the distance from the throat of the nozzle to the end of the expansion cone.
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2.
Liquid or gas injection will usually have less weight penalty to the rocket only when the total burning of the rocket stage is less than 60 sec.
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3.
To get best reliability factor for the system, it should have capability of operating in presence of contamination.
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4.
Basic injector valve design and performance is controlled by four parameters; maximum mass flow rate, slew response, frequency response, and hysteresis.
A block diagram of a TVC system is presented which is a good model for examining the low frequency dynamic characteristics of the system.
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Citation
Salemka, R., "The Practical Design of Fluid Injection Thrust Vector Control Systems," SAE Technical Paper 640205, 1964, https://doi.org/10.4271/640205.Also In
References
- “Optimum Design Investigation of Secondary Injection Thrust Vector Control Systems,” AFSC-TR-61-1. Confidential Thiokol Chemical Corp. March 1962
- Eastman J. M. “Cooled Probes in Relation to Other TVC Systems.” Submitted - SAE Missile and Aerospace TVC Panel (Subcommittee A-GD) Sept. 30 1963
- “Induced Shocks by Secondary Fluid Injection in Supersonic Nozzle Flow.” United Technology Center September 1963