نتایج جستجو برای: reusable launch vehicle

تعداد نتایج: 134148  

Journal: :Aerospace 2022

The thrust chamber’s inner wall suffers high temperature and pressure differences from the coolant channel, which limits life of rocket engine. Life prediction chamber really plays an important role in reusable launch vehicle propulsion systems. Porowski beam model is widely used liquid engine chambers, calculates caused by fatigue, creep, thinning after each firing cycle. In order to analyze c...

2003
M. Maita

Having considered a number of possible future space activities and analysing their implications for future launch vehicle requirements in terms of economics, technological and policy aspects by overcoming the disadvantages of the current launch system, the development of the low-cost fully reusable new space transportation system to and from lower earth orbit, as driven by the clear need for af...

Journal: :Ceas Space Journal 2022

Abstract The EU has deemed it crucial to maintain its own independent access space. To foster the European industry competitiveness, cost of launch systems needs be reduced and flexibility improved. development reusable vehicle (RLV) is currently changing global market space transportation promising immense savings. Within this context, MT Aerospace been investigating configurations possible so...

2012
Stanley K. Borowski David R. McCurdy Thomas W. Packard

The nuclear thermal rocket (NTR) is a proven, high thrust propulsion technology that has twice the specific impulse (Isp ~900 s) of today’s best chemical rockets. During the Rover and NERVA (Nuclear Engine for Rocket Vehicle Applications) programs, twenty rocket reactors were designed, built and ground tested. These tests demonstrated: (1) a wide range of thrust; (2) high temperature carbide-ba...

Journal: :Aerospace 2021

With Mars colonisation becoming a reality for the near future, it is of importance to analyse how crew and cargo can be transported between Earth colony on Mars. This article feasibility design study launch vehicle whose mission shuttle from Low Orbit Martian surface. A single-stage reusable rocket has been selected fulfil this mission, code-named Charon. The profile such was created, leading M...

1997
J. Olds G. Saks

Future reusable launch vehicles will depend on new propulsion technologies to lower system operational costs while maintaining adequate performance. Recently, a number of vehicle systems utilizing rocket-based combinedcycle (RBCC) propulsion have been proposed as possible low-cost space launch solutions. Vehicles using RBCC propulsion have the potential to combine the best aspects of airbreathi...

A numerical dynamic-aerodynamic interface for simulating the separation dy­n­a­m­ic­s of co­n­­s­t­r­a­i­ned strap-on boosters jettisoned in the atmosphere is presented. A 6-DOF multi body dynamic solver ،using Constraint For­ce Equation Methodology is coupled with a numerical time dependent Euler flow solver. An automatic dyna­m­i­­c mesh updating proc­e­d­ure is employed using smoothing and l...

2007
John W. Hicks

A new family of NASA experimental aircraft (X-planes) is being developed to uniquely, yet synergistically tackle a wide class of technologies to advance low-cost, efficient access to space for a range of payload classes. This family includes two non-air-breathing rocket-powered concepts, the X-33 and the X-34 aircraft, and two air-breathing vehicle concepts, the scramjet-powered Hyper-X and the...

2006
Robert W. Thompson Alan Wilhite

The NASA Exploration Systems Architecture Study (ESAS) produced a transportation architecture for returning humans to the moon affordably and safely. ESAS determined that the best lunar exploration strategy was to separate the launch of crew from the launch of cargo, thereby requiring two launches per lunar mission. An alternate concept for the cargo launch vehicle is a side mounted Shuttle-der...

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