Results 191 to 200 of about 1,081 (242)

Design and optimization of variable thrust hybrid rocket motors for sounding rockets

Science China Technological Sciences, 2011
Besides safety and low-cost, the start/shutdown/restarting and throttling ability are the other two significant advantages of hybrid rocket motors (HRMs) compared with liquid and solid ones. In this study, a two-stage variable thrust and non-toxic 98%HP/HTPB hybrid rocket motor (VTHRM) is designed and applied in a sounding rocket, and the design ...
DaLin Rao, GuoBiao Cai, Hao Zhu, Hui Tian   +3 more
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Development of a Hybrid Rocket Motor Using a Diaphragm for a Small Test Rocket

44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2008
For tactical missiles, hybrid rocket propulsion offers attractive advantages such as easy thrust control and compliance with insensitive munitions (IM) requirements. However, missile propulsion is highly constrained by volume and mass, and often requires a high thrust level and thrust per unit cross section.
Matthias Grosse, Gerhard Schlatzke
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Development of a N2O/HTPB hybrid rocket motor

33rd Joint Propulsion Conference and Exhibit, 1997
Experiments were performed as a part of the Hybrid Propulsion Demonstration Program (HPDP) in order to demonstrate a N2O/HTPB hybrid sounding rocket. Multiple hybrid motors have been tested at Environmental Aeroscience Corporation in order to develop a high performance hybrid flight system.
J. Arves, H. Jones, K. Kline, K. Smith, Ted Slack, T. Bales, J. Arves, H. Jones, K. Kline, K. Smith, Ted Slack, T. Bales   +11 more
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Instrumentation of UALR labscale hybrid rocket motor

SPIE Proceedings, 2006
The Central Arkansas Combustion Group has used a NASA EPSCoR grant to improve the instrumentation and control of its labscale hybrid rocket facility. The research group investigates fundamental aspects of combustion in hybrid rocket motors. This paper describes the new instrumentation, provides examples of measurements taken, and describes novel ...
Andrew B. Wright, Warfield Teague, Ann M. Wright, Edmond W. Wilson   +3 more
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Combustion Instability for Hybrid Rocket Motors with a Diaphragm

2019
A diaphragm has been used to enhance fuel regression rate and combustion efficiency in hybrid rockets. On the other hand, it has been observed that significant pressure oscillations occurred. In this paper, main factor on the excitation of the instability was studied.
LEE, Jungpyo, RHEE, Sunjae, KIM, Jinkon, MOON, Heejang, SHYNKARENKO, Olexiy, SIMONE, Domenico, MORITA, Takakazu   +6 more
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Numerical Analyses of Thermal Protection Design in Hybrid Rocket Motors

AIAA Propulsion and Energy 2020 Forum, 2020
Hybrid rockets can provide a similar degree of flexibility in the thrust profile as a liquid engine but keeping a much simpler architecture. In addition to deal with only a single liquid propellant, hybrids are often designed with some sort of ablative protection system borrowed from the less flexible solid rockets instead of the more complex ...
Barato F., Paccagnella E., Franco M., Pavarin D.   +3 more
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Results of Labscale Hybrid Rocket Motor investigation

28th Joint Propulsion Conference and Exhibit, 1992
This work was performed to establish a labscale hybrid rocket motor test and evaluation capability at NASA Marshall Space Flight Center. The scope included activation of a Labscale Hybrid Motor, determination of baseline burning rates for PMMA fuel, and replication of pressure oscillations for HTPB fuel. The 0.820-in.-diam port, 10-in.-long fuel grains
B. GREINER, R. FREDERICK, JR.
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Simulations of Paraffin-Based Hybrid Rocket Motors and Comparison with Experiments

53rd AIAA/SAE/ASEE Joint Propulsion Conference, 2017
A Reynolds-averaged Navier-Stokes solver is suitably set up to predict the flow field within paraffin-based hybrid rocket thrust chambers. The regression rate is modeled through a gas/surface interaction boundary condition based on wall mass and energy balances.
Leccese, Giuseppe, Bianchi, Daniele, Nasuti, Francesco, Stober, Keith J., Narsai, Pavan, Cantwell, Brian J.   +5 more
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Hybrid rocket motor experiments

1985
Aerospace ...
Timnat, Y.M. (author), Korting, P.A.O.G. (author)   +1 more
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Regression rate studies of hybrid rocket fuel on a lab scale rocket motor

2015 International Conference on Robotics, Automation, Control and Embedded Systems (RACE), 2015
Hybrid rocket propulsion is attractive because of their potential features such as high specific impulse, stop-start capability, thrust modulation, mission abort and non-polluting characteristics. Various combustion models and hybrid combustion theories have been developed to understand the physics behind hybrid combustion.
Yash Pal, V. Ravi Kumar
openaire   +1 more source