Results 181 to 190 of about 29,759 (245)

Liquid Oxygen/Liquid Methane Rocket Engine Development

SAE Technical Paper Series, 2007
<div class="htmlview paragraph">Because of low toxicity and low reactivity, methane and oxygen are identified as “green propellants”, and have the highest performance (as measured in ISP) of any practical rocket propellants, except oxygen/hydrogen.
Dan DeLong, Jeff Greason, Khaki Rodway McKee   +2 more
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Liquid rocket engine test facility engineering challenges

Acta Astronautica, 2006
Abstract Liquid rocket engines for launch vehicles and space crafts as well as their subsystems need to be verified and qualified during hot-runs. A high test cadence combined with a flexible test team helps to reduce the cost for test verification during development/qualification as well as during acceptance testing for production.
Hartwig Ellerbrock, Stefan Ziegenhagen
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Turbopumps for Liquid Rocket Engines

SAE Technical Paper Series, 1992
<div class="htmlview paragraph">This technical paper discusses the evolution of turbopumps designed for U.S. rocket engines, starting with the Thor, Jupiter, and Atlas missiles, which were developed in the 1950s; the F-1 and J-2 engines, which were developed in the 1960s for the Saturn V vehicle to put man on the moon; and the Space Shuttle Main ...
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Liquid-Propellant Rocket Engine Injector Dynamics

Journal of Propulsion and Power, 1998
The dynamic characteristics of liquid-rocket injectors in the presence of intense combustion-chamber and propellant feed-line oscillations are discussed. Liquid-propellant injectors always function in nonsteady e ow environments and are therefore considered as a dynamic component of an engine.
Vladimir G. Bazarov, Vigor Yang
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Liquid-Propellant Rocket Engines

2012
The liquid-propellant rocket engine has the characteristics that allow it to deliver thrust at a high-performance level, with an efficiency and operational flexibility that enables a number of mission applications to go forward. Monopropellant and bipropellant versions of this category of engine are discussed in some detail in this chapter.
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Liquid rocket engine test plan comparison

37th Joint Propulsion Conference and Exhibit, 2001
Tests quantity, number of Engines fired, total cumulated firing time performed during development are key factors for reliability estimation, but above all, for Launcher customer trust. In other respect schedule and development cost are first order dependant of the Engine test plan: the difference between a high number of tests and a low rate test plan
Pascal Pempie, Hilda Vernin
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LIQUID ROCKET ENGINE RELIABILITY CERTIFICATION

2017
<div class="section abstract"> <div class="htmlview paragraph">Current design and development practices leading to formal liquid rocket engine qualification (USAF) or certification (NASA) will not achieve the specific reliability objectives of future programs.
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Design of liquid-propellant rocket engines

Journal of Machinery Manufacture and Reliability, 2012
A design method for liquid-propellant rocket engines is proposed, on the basis of models adjusted in response to test results. This method increases the reliability of the results and reduces ground testing of the motors. The effectiveness of the method is confirmed by ground testing and flight experience with the motors developed by Salyut Design ...
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Regenerative cooling for liquid rocket engines

Journal of Thermal Science, 1995
Heat transfer in the thrust chamber is of great importance in the design of liquid propellant rocket engines. Regenerative cooling is an advanced method which can ensure not only the proper running but also higher performance of a rocket engine. The theoretical model is complicated, it relates to fluid dynamics, heat transfer, combustion, etc...
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