The monopropellant hydrazine reaction control system for the RCA Satcom satellite

Balzer, Dirk; Brill, Yvonne C.; Scott, Wayne; Sing, P.

doi:10.2514/6.1976-631

Cited by 10 publications

(2 citation statements)

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“…[1][2][3][4][5][6][7][8][9] No work on the blowdown or waterhammer behavior of the propulsion feed system has been reported in the available literature. In this study, both blowdown and waterhammer characteristics of mono-propellant feed systems are studied to achieve a better understanding of these phenomena.…”

Section: Introductionmentioning

confidence: 99%

Blowdown and waterhammer behavior of mono-propellant feed systems for satellite attitude and reaction control

Hsieh

Lin

Yang

1997

33rd Joint Propulsion Conference and Exhibit

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The blowdown and waterhammer characteristics of mono-propellant feed systems for satellite attitude and reaction control are investigated experimently in this work. In addition, the blowdown behavior is also simulated by a theoretical model. The simulated results agree well with experimental data. The measured friction correlations of the filter and the latch valve are found to be pressure dependent. The pressure dependence of these components must be considered in the theoretical model to obtain an accurate simulation. During the blowdown operation of the propellant feed system, the rate of pressure drop within the system is more significant during the initial phase of the operation. The latch valve is found to have a significant effect on the waterhammer pressure wave; it increases the peak value and the frequency of the waterhammer pressure wave.

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Section: Introductionmentioning

confidence: 99%

Blowdown and waterhammer behavior of mono-propellant feed systems for satellite attitude and reaction control

Hsieh

Lin

Yang

1997

33rd Joint Propulsion Conference and Exhibit

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show abstract

“…For this type of operation, fluid hammer (equivalent to water hammer) pressure spikes are simultaneously introduced in the pipe. The magnitude of the fluid hammer pressure spikes must be considered in propulsion design to ensure system integrity [5][6][7]. In probing the transport behaviour of a transient pulsating laminar pipe flow, the conventional steady state Darcy friction formula may cause a significant error in simulating the strong damping of flow and pressure waves travelling through fluid lines.…”

Section: Introductionmentioning

confidence: 99%

Blowdown and fluid hammer studies for a satellite reaction control subsystem

Yang

Kuo

2001

Proceedings of the Institution of Mechanical Engineers, Part G:

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Blowdown and fluid hammer characteristics are studied for a satellite reaction control subsystem. A flow channel network numerical scheme is used to determine the blowdown pressure profile and the steady state pressure drops in the propellant lines. For the transient fluid analysis, a theoretical model based on the method of characteristics (MOC) is solved to simulate the time-dependent transport behaviour of the propellant flow. Predicted results show that the blowdown pressure profile in continuous mode operation ranges from 24.5 to 5.5 bar throughout the lifetime of propellant usage. Under a tank pressure of 24.5 bar, the predicted peak values of the pressure fluctuations caused by the fluid hammer waves are nearly the same and equal to 25.4 bar at the locations of the latching isolation valve inlet and the thruster valve inlet. The Fourier spectral analysis also indicates that the induced excitation from the fluid hammer pressure oscillations will not resonantly couple with the thruster assembly and fuel lines. In considering the fluid hammer effect due to the abrupt closure of valves, the pressure spikes will not lead to any damage to the propulsion components or lines during normal operation.

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RCA Satcom: An example of weight optimized satellite design for maximum communications capacity

Keigler

1978

Acta Astronautica

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The monopropellant hydrazine reaction control system for the RCA Satcom satellite

Cited by 10 publications

References 0 publications

Blowdown and waterhammer behavior of mono-propellant feed systems for satellite attitude and reaction control

Blowdown and waterhammer behavior of mono-propellant feed systems for satellite attitude and reaction control

Blowdown and fluid hammer studies for a satellite reaction control subsystem

RCA Satcom: An example of weight optimized satellite design for maximum communications capacity

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