Results 171 to 180 of about 20,668 (233)
Some of the next articles are maybe not open access.
ADVANCED LIQUID AND GELLED PROPELLANTS FOR ROCKET AND RAMJET PROPULSION
International Journal of Energetic Materials and Chemical Propulsion, 2015The development of future propulsion systems is affected by different and partly contradictory demands like more complex mission requirements, higher reliability, environmental and safety aspects, and of course also cost reduction. This requires intensified research and technology development activities always in relation to the improvement of the ...
Ciezki, Helmut +2 more
openaire +2 more sources
Iterative learning control for the liquid rocket propulsion systems
SPIE Proceedings, 2005This paper addressed mathematical modeling and control of liquid rocket propulsion system (LRPS). Dynamic simulation of LRPS shows that control difficulty is rooted from the slow dynamics and high nonlinearity of the rocket motion. As a consequence a conventional feedback control technique is unsuitable for controlling the rocket motion.
Youngsu Ryu +3 more
openaire +1 more source
Problems of multiple use of liquid rocket propulsion systems
Informacionno-technologicheskij vestnik, 2021Сформулированы недостатки двигательных установок жидкостных ракет однократного применения для транспортировки на околоземные орбиты и возвращения на Землю необходимых грузов. В результате анализа ряда публикаций в научно-технической литературе установлены проблемы создания и многократного применения жидкостных ракетных двигателей и научно-технические ...
openaire +1 more source
TEKAN 2010 - Thrust Chamber Technologies for Liquid Rocket Propulsion
42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2006Abstract Facing the worldwide competition in the space transportation market, Europe today concentrates its efforts on cost reduction for future production batches of its Ariane launcher family safeguarding its leading position as commercial space access provider. In addition to this, alternative launcher scenarios are evaluated in line with associated
Gerald Hagemann +6 more
openaire +1 more source
Acoustics associated with liquid rocket propulsion testing
The Journal of the Acoustical Society of America, 2014Ground testing of liquid rocket engines is a necessary step towards building reliable launch vehicles. NASA Stennis Space Center has a long history of performing both developmental and certification testing of liquid propulsion systems. During these test programs, the propulsion test article, test stand infrastructure and the surrounding community can ...
openaire +1 more source
Research of Pipeline Fault Diagnosis for Liquid Rocket Propulsion System
Applied Mechanics and Materials, 2012The applications of healthy monitoring and fault diagnosis's system can enhance the reliability and safety of the whole vehicle, which has significance to detect and isolate fault as early as possible and that tragedy can be avoided. In this paper, pipeline fault simulation analysis and fault diagnosis for LRE is studied as direct-inverse problem ...
Yan Jun Li +3 more
openaire +1 more source
The production of liquid hydrogen at the rocket propulsion establishment
Cryogenics, 1971Abstract The design, development, and operation of a liquid hydrogen plant with an hourly output of 100 litres of normal liquid hydrogen or 70 litres of 85–90% para-hydrogen are described. The liquid hydrogen produced was used for testing a rocket thrust chamber developed by Rolls Royce and for tank pressurization studies on behalf of ELDO.
R. Bainbridge, T.R. Horton
openaire +1 more source
Unsupervised Anomaly Detection for Liquid-Fueled Rocket Propulsion Health Monitoring
AIAA Infotech@Aerospace 2007 Conference and Exhibit, 2007This article describes the results of applying four unsupervised anomaly detection algorithms to data from two rocket propulsion testbeds.The first testbed uses historical data from the Space Shuttle Main Engine. The second testbed uses data from an experimental rocket engine test stand located at NASA Stennis Space Center.
Mark Schwabacher +2 more
openaire +1 more source
Three-dimensional CFD analysis and validation of liquid rocket propulsion components
30th Joint Propulsion Conference and Exhibit, 1994The objective of this ongoing work is to evaluate, validate, and improve Computational Fluid Dynamics (CFD) prediction methods for rccket propulsion applications. Particular emphasis has been placed upon geomeuy definition and grid generation in a timely manner. A liquid rocket engine feedlme component has been chosen for study. This component is an 80
Hugh Thornburg +2 more
openaire +1 more source
A Subscale Facility for Liquid Rocket Propulsion Diagnostics at Stennis Space Center
SAE Technical Paper Series, 1991<div class="htmlview paragraph">The Diagnostics Tested Facility (DTF) at NASA's John C. Stennis Space Center (SSC) in Mississippi was designed to provide a testbed for development of rocket engine exhaust plume diagnostics instrumentation. A 1200-lb thrust liquid oxygen (LOX)/gaseous hydrogen (GH<sub>2</sub>) thruster is used as the ...
N. RAINES, F. BIRCHER, D. CHENEVERT
openaire +1 more source