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Comparison Of Orbital Rocket Engines
This page is an incomplete list of orbital rocket engine data and specifications. Current, Upcoming, and In-Development rocket engines Retired and canceled rocket engines See also * Comparison of orbital launch systems * Comparison of orbital launchers families * Comparison of crewed space vehicles * Comparison of space station cargo vehicles * Comparison of solid-fuelled orbital launch systems This article contains the lift launch systems constructed by some solid fuel stages except the final stage. All stages solid fueled :* Including suborbital mission All stages solid fueled except uppermost stage See also * Comparison of o ... * List of space launch system designs * List of orbital launch systems Notes References {{DEFAULTSORT:Orbital rocket engine comparison Spaceflight Technological comparisons Space lists Rocket engines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orbital Spaceflight
An orbital spaceflight (or orbital flight) is a spaceflight in which a spacecraft is placed on a trajectory where it could remain in space for at least one orbit. To do this around the Earth, it must be on a free trajectory which has an altitude at perigee (altitude at closest approach) around ; this is the boundary of space as defined by NASA, the US Air Force and the FAA. To remain in orbit at this altitude requires an orbital speed of ~7.8 km/s. Orbital speed is slower for higher orbits, but attaining them requires greater delta-v. The Fédération Aéronautique Internationale has established the Kármán line at an altitude of as a working definition for the boundary between aeronautics and astronautics. This is used because at an altitude of about , as Theodore von Kármán calculated, a vehicle would have to travel faster than orbital velocity to derive sufficient aerodynamic lift from the atmosphere to support itself. Due to atmospheric drag, the lowest altitu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orion (spacecraft)
Orion (officially Orion Multi-Purpose Crew Vehicle or Orion MPCV) is a partially reusable crewed spacecraft used in NASA's Artemis program. The spacecraft consists of a Crew Module (CM) space capsule designed by Lockheed Martin and the European Service Module (ESM) manufactured by Airbus Defence and Space. Capable of supporting a crew of six beyond low Earth orbit, Orion can last up to 21 days undocked and up to six months docked. It is equipped with solar panels, an automated docking system, and glass cockpit interfaces modeled after those used in the Boeing 787 Dreamliner. A single AJ10 engine provides the spacecraft's primary propulsion, while eight R-4D-11 engines, and six pods of custom reaction control system engines developed by Airbus, provide the spacecraft's secondary propulsion. Although compatible with other launch vehicles, Orion is primarily intended to launch atop a Space Launch System (SLS) rocket, with a tower launch escape system. Orion was original ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Combustion Tap-off Cycle
The combustion tap-off cycle is a power cycle of a bipropellant rocket engine. The cycle takes a small portion of hot exhaust gas from the rocket engine's combustion chamber and routes it through turbopump turbines to pump fuel before being exhausted (similar to the gas-generator cycle). Since fuel is exhausted, the tap-off cycle is considered an open-cycle engine. The cycle is comparable to a gas-generator cycle engine with turbines driven by main combustion chamber exhaust rather than a separate gas generator or preburner. The J-2S rocket engine, a cancelled engine developed by NASA, used the combustion tap-off cycle and was first successfully tested in 1969. By 2013, Blue Origin, with their New Shepard launch vehicle, had successfully flight-tested the BE-3 engine using a tap-off cycle. According to Blue Origin, the cycle is particularly suited to human spaceflight due to its simplicity, with only one combustion chamber and a less stressful engine shutdown process. However, e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liquid Hydrogen
Liquid hydrogen (LH2 or LH2) is the liquid state of the element hydrogen. Hydrogen is found naturally in the molecular H2 form. To exist as a liquid, H2 must be cooled below its critical point of 33 K. However, for it to be in a fully liquid state at atmospheric pressure, H2 needs to be cooled to .IPTS-1968 iupac.org, accessed 2020-01-01 A common method of obtaining liquid hydrogen involves a compressor resembling a jet engine in both appearance and principle. Liquid hydrogen is typically used as a concentrated form of hydrogen storage. Storing it as liquid takes less space than storing it as a gas at normal temperature and pressure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Shepard
New Shepard is a fully reusable suborbital launch vehicle developed by Blue Origin for space tourism. The vehicle is named after Alan Shepard, the first American astronaut in space. The vehicle is capable of vertical takeoff and vertical landing, and can carry a crew. The first uncrewed test flight of the New Shepard vehicle was in 2015. Blue Origin began testing prototype engines and vehicles in 2006 and completed full-scale engine development in 2015. Testing continued in 2016 and 2017, and Blue Origin planned its first crewed test flight for 2018, but it was delayed until 2021. As of 4 August 2022, New Shepard has flown 32 passengers into space. Tickets for commercial flights began to be sold on May 5, 2021, for flights carrying up to six people. New Shepard is a one-stage rocket consisting of a crew capsule and a booster rocket. The capsule can seat six passengers. The booster rocket, powered by a BE-3 liquid hydrogen and liquid oxygen engine, propels the capsule to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blue Origin
Blue Origin, LLC is an American private spaceflight, privately funded aerospace manufacturer and sub-orbital spaceflight services company headquartered in Kent, Washington. Founded in 2000 by Jeff Bezos, the founder and executive chairman of Amazon (company), Amazon, the company is led by CEO Bob Smith and aims to make access to space cheaper and more reliable through reusable launch vehicles. Rob Meyerson led Blue Origin from 2003 to 2017 and served as its first president. Blue Origin is employing an incremental approach from suborbital to orbital flight, with each developmental step building on its prior work. The company's name refers to the blue planet, Earth, as the point of origin. Blue Origin develops orbital technology, rocket-powered VTVL, vertical takeoff and vertical landing (VTVL) vehicles for access to sub-orbital spaceflight, suborbital and orbital spaceflight, orbital outer space, space. Initially focused on suborbital spaceflight, the company has designed, built ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BE-3
The BE-3 (''Blue Engine 3'') is a LH2/ LOX rocket engine developed by Blue Origin. The engine began development in the early 2010s, and completed acceptance testing in early 2015. The engine is being used on the New Shepard suborbital rocket, for which test flights began in 2015 and a first crewed flight occurred in 2021. The engine was under consideration by United Launch Alliance (ULA) for use in a new second stage, the Advanced Cryogenic Evolved Stage, in ULA's Vulcan orbital launch vehicle with first flight in the 2020s. History Following Aerojet’s acquisition of Pratt & Whitney Rocketdyne in 2012, Blue Origin president Rob Meyerson saw an opportunity to fill a gap in the defense industrial base. Blue Origin publicly entered the liquid rocket engine business by partnering with ULA on the development of the BE-4, and working with other companies. Meyerson announced the selection of Huntsville, AL as the location of Blue Origin’s rocket production factory in June ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Staged Combustion Cycle
The staged combustion cycle (sometimes known as topping cycle, preburner cycle, or closed cycle) is a power cycle of a bipropellant rocket engine. In the staged combustion cycle, propellant flows through multiple combustion chambers, and is thus combusted in stages. The main advantage relative to other rocket engine power cycles is high fuel efficiency, measured through specific impulse, while its main disadvantage is engineering complexity. Typically, propellant flows through two kinds of combustion chambers; the first called preburner and the second called main combustion chamber. In the preburner, a small portion of propellant, usually fuel-rich, is partly combusted, and the increasing volume flow is used to drive the turbopumps that feed the engine with propellant. The gas is then injected into the main combustion chamber and combusted completely with the other propellant to produce thrust. Tradeoffs The main advantage is fuel efficiency due to all of the propellant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RP-1
RP-1 (alternatively, Rocket Propellant-1 or Refined Petroleum-1) is a highly refined form of kerosene outwardly similar to jet fuel, used as rocket fuel. RP-1 provides a lower specific impulse than liquid hydrogen (LH2), but is cheaper, is stable at room temperature, and presents a lower explosion hazard. RP-1 is far denser than LH2, giving it a higher energy density (though its specific energy is lower). RP-1 also has a fraction of the toxicity and carcinogenic hazards of hydrazine, another room-temperature liquid fuel. Usage and history RP-1 is a fuel in the first-stage boosters of the Electron, Soyuz, Zenit, Delta I-III, Atlas, Falcon, Antares, and Tronador II rockets. It also powered the first stages of the Energia, Titan I, Saturn I and IB, and Saturn V. The Indian Space Research Organization (ISRO) is also developing an RP-1 fueled engine for its future rockets. Development During and immediately after World War II, alcohols (primarily ethanol, occasionally me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firefly Beta
Firefly Aerospace is an American private aerospace firm based in Austin, Texas, that develops launch vehicles for commercial launches to orbit. The company completed its $75 million Series A investment round in May 2021, which was led by DADA Holdings. The current company was formed when the assets of the former company Firefly Space Systems were acquired by EOS Launcher in March 2017, which was then renamed ''Firefly Aerospace''. Firefly's purported purpose is to increase access to space, similar to other NewSpace organizations. Launch vehicles Firefly Alpha The Alpha vehicle developed by Firefly Aerospace is an expendable launch vehicle with payload capability to low Earth orbit and to Sun-synchronous orbit. The projected launch cost is US$15 million per launch. Alpha is designed to compete with vehicles like the Polar Satellite Launch Vehicle (PSLV). It utilizes Reaver-1 and Lightning-1 engines and a lightweight carbon composite structure to reduce launch weight ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerojet Rocketdyne
Aerojet Rocketdyne is an American manufacturer of rocket, hypersonic, and electric propulsive systems for space, defense, civil and commercial applications. Headquartered in Sacramento, California, the company is owned by Aerojet Rocketdyne Holdings. Aerojet Rocketdyne was formed in 2013 when Aerojet (then owned by GenCorp) and Pratt & Whitney Rocketdyne were merged, following the latter's acquisition by GenCorp from Pratt & Whitney. On April 27, 2015, the name of the holding company, GenCorp, was changed from ''GenCorp, Inc.'' to ''Aerojet Rocketdyne Holdings, Inc''. Lockheed Martin announced plans to take over Aerojet Rocketdyne on December 20, 2020 as part of a $4.4 billion acquisition; however this was abandoned by Lockheed on February 13, 2022 after opposition from Raytheon led the FTC to move to block the acquisition. Products Current engines * RS-25 ( LH2/ LOX) – Previously known as the Space Shuttle main engine (SSME), it was the reusable main engine developed by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AR1 (rocket Engine)
The Aerojet Rocketdyne AR1 is a thrust RP-1/ LOX oxidizer-rich staged combustion cycle rocket engine project. The engine was conceived in 2014, and received US government funding to build a prototype engine in 2016. By 2018, the USAF had committed of government funding to develop the engine and build an initial engine prototype, while Aerojet will put of private capital into the project through the prototype build. , there have been no plans to take the AR1 to full production. History Aerojet Rocketdyne proposed in 2014 to "lobby the government to fund an all-new, U.S.-sourced rocket propulsion system." In June 2014, Aerojet initially projected it would cost under per pair of engines, not including the up to estimated development cost to be funded by the government. Later in 2014, the US Congress passed a law requiring the US Air Force to "develop a new propulsion system by 2019 to replace the RD-180 engine" that powers Atlas V used by United Launch Alliance (ULA). Dynet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
