Results 181 to 190 of about 23,098 (247)

Cryogenic propellant management in space: open challenges and perspectives. [PDF]

NPJ Microgravity
Simonini A, Dreyer M, Urbano A, Sanfedino F, Himeno T, Behruzi P, Avila M, Pinho J, Peveroni L, Gouriet JB.   +9 more
europepmc   +1 more source

A green stabilizer for Nitrate ester-based propellants: An overview. [PDF]

Heliyon
Rusly SNA, Jamal SH, Samsuri A, Mohd Noor SA, Abdul Rahim KS.   +4 more
europepmc   +1 more source

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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
openaire   +1 more source

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
openaire   +1 more source

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 ...
openaire   +1 more source

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
openaire   +1 more source

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.
openaire   +1 more source

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
openaire   +1 more source

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.
openaire   +1 more source