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Space Propulsion Group was founded in 1999 by Arif Karabeyoglu, Brian Cantwell, and others from Stanford University to develop high regression-rate liquefying hybrid rocket fuels. They have successfully fired motors as large as 12.5 in (32 cm). diameter which produce 13,000 lbf (58,000 N) using the technology and are currently developing a 24 ...
SABRE (Synergetic Air Breathing Rocket Engine [4]) was a concept under development by Reaction Engines Limited for a hypersonic precooled hybrid air-breathing rocket engine. [5] [6] The engine is designed to achieve single-stage-to-orbit capability, propelling the proposed Skylon spaceplane to low Earth orbit.
VSS Enterprise conducted its first powered flight on 29 April 2013, [3] marking the first flight test of RocketMotorTwo. The test was a 16-second burn as planned, and was ignited at an altitude of 47,000 feet (14,000 m), shortly after Enterprise was released from its WhiteKnightTwo carrier aircraft and the pilots cross-checked data and verified ...
SpaceShipOne is an experimental air-launched rocket-powered aircraft with sub-orbital spaceflight capability at speeds of up to 3,000 ft/s (2,000 mph) / 910 m/s (3,300 km/h) using a hybrid rocket motor.
hybrid Thrusters, Combined Liquid Electric Propulsion Systems, Methane/ Oxygen Ion Thrusters Uses Electric and Liquid Propulsion simultaneously for space propulsion for LEO/MEOsatellites [37] Moog-ISP (In Space Propulsion) Westcott, Buckinghamshire United Kingdom Niagara Falls, NY United States
Skylon has its origins within a previous space development programme for an envisioned single-stage-to-orbit (SSTO) spaceplane, known as HOTOL. [14] In 1982, when work commenced on the HOTOL by several British companies, there was significant international interest to develop and produce viable reusable launch systems, perhaps the most high-profile of these being the NASA-operated Space Shuttle.
The shuttle used 6 x 40,960 N·s O hybrid motors for a maximum thrust of 8 metric tonnes, making it the most powerful non-governmental rocket launch in Europe. Unfortunately, the explosive bolts holding the Robin to the external tank failed to separate, causing it to crash into a nearby hill.
An alternative to scale is to make the discarded stages practically reusable: this was the original design goal of the Space Shuttle phase B studies, and is currently pursued by the SpaceX reusable launch system development program with their Falcon 9, Falcon Heavy, and Starship, and Blue Origin using New Glenn.