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Bypass Tube
This article briefly describes the components and systems found in jet engines. Major components Major components of a turbojet including references to turbofans, turboprops and turboshafts: *Cold section: **Air intake (inlet) — For subsonic aircraft, the inlet is a duct which is required to ensure smooth airflow into the engine despite air approaching the inlet from directions other than straight ahead. This occurs on the ground from cross winds and in flight with aircraft pitch and yaw motions. The duct length is minimised to reduce drag and weight. Air enters the compressor at about half the speed of sound so at flight speeds lower than this the flow will accelerate along the inlet and at higher flight speeds it will slow down. Thus the internal profile of the inlet has to accommodate both accelerating and diffusing flow without undue losses. For supersonic aircraft, the inlet has features such as cones and ramps to produce the most efficient series of shockwaves which for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jet Engine Numbered
Jet, Jets, or The Jet(s) may refer to: Aerospace * Jet aircraft, an aircraft propelled by jet engines ** Jet airliner ** Jet engine ** Jet fuel * Jet Airways, an Indian airline * Super Air Jet, an Indonesian airline * Wind Jet (ICAO: JET), an Italian airline * Journey to Enceladus and Titan (JET), a proposed astrobiology orbiter to Saturn * Jet pack, a backpack personal flying device containing a jet motor * Fighter jet, a military aircraft Aircraft * Business jet ** Boeing Business Jet * Very light jet ** Cirrus Vision SF50, originally called "The-Jet by Cirrus" ** Eclipse 400, originally called "Eclipse Concept Jet" ** Honda HA-420 HondaJet ** Piper PA-47 PiperJet Other areas of science, math, and technology * Jet (fluid), a coherent stream of fluid that is projected into a surrounding medium, usually from some kind of a nozzle or aperture * Jet (gemstone), a black or brown semi-precious mineraloid * Jet (mathematics), an operation on a differentiable function * Jet (part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bombardier CRJ
The Bombardier CRJ/Mitsubishi CRJ or CRJ Series (for Canadair Regional Jet) is a family of regional jets introduced in 1991 by Bombardier Aerospace. The CRJ was manufactured by Bombardier Aerospace with the manufacturing of the first CRJ generation, the CRJ100/200 starting in 1991 and the second CRJ generation, the CRJ700 series starting in 1999. The CRJ programme was acquired by Japanese corporation Mitsubishi Heavy Industries (MHI RJ Aviation Group) in a deal that closed 1 June 2020. Bombardier subsequently completed the assembly of the order backlog on behalf of Mitsubishi. Bombardier claims it is the most successful family of regional jets in the world. Production ended in December 2020 after 1,945 were built. Background The family consists of the following aircraft generations and models/derivatives: * CRJ100/200 ** CRJ100 – maximum of 50 passenger seats ** CRJ200 – maximum of 50 passenger seats, improved CF34-3B1 engine *** CRJ440 – CRJ200 limited to 44 passe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SSM-N-9 Regulus II
The SSM-N-9 Regulus II was a guided supersonic cruise missile armed with a nuclear warhead, intended for launching from surface ships and submarines of the U.S. Navy (USN).Koch, Charles A"Regulus II cruise missile".''Regulus II Cruise Missile''. Retrieved: 6 January 2013. History The limitations of the Regulus I were well known by the time it entered service in 1955, so the Navy issued a specification for a surface-launched supersonic shipborne cruise missile, equipped to carry a nuclear warhead, that had greater range, accuracy and resistance to countermeasures. Development of the Regulus II was well under way when the program was canceled in favor of the UGM-27 Polaris SLBM (Submarine-Launched Ballistic Missile) system, which gave unprecedented accuracy as well as allowing the launch submarine to remain submerged and covert. Prototype and initial production missiles were later converted to KD2U-1 supersonic target drones for the US Navy and the U.S. Air Force, which used the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XF8U-3
The Vought XF8U-3 Crusader III was an aircraft developed by Vought, Chance Vought as a successor to the successful Vought F-8 Crusader program and as a competitor to the McDonnell Douglas F-4 Phantom II.Tillman 1990 Though based in spirit on the F8U-1 and F8U-2, and sharing the older aircraft's designation in the old Navy system, the two aircraft shared few parts. Design and development In parallel with the F8U-1s and -2s, the Crusader design team was also working on a larger aircraft with better performance, designated within Vought as the V-401. Although externally similar to the Crusader and sharing with it the variable incidence wing, the Crusader III was larger and was powered by the Pratt & Whitney Pratt & Whitney J75, J75-P-5A engine generating 29,500 pound-force, lbf (131 kN) of afterburning thrust. The Crusader III was designed for brief excursions to Mach 2.7 and two visible features showed it had a speed capability beyond that of the earlier Crusaders, namel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
F-105
The Republic F-105 Thunderchief is an American fighter-bomber that served with the United States Air Force from 1958 to 1984. Capable of Mach 2, it conducted the majority of strike bombing missions during the early years of the Vietnam War. It was originally designed as a single-seat, nuclear-attack aircraft; a two-seat Wild Weasel version was later developed for the specialized Suppression of Enemy Air Defenses (SEAD) role against surface-to-air missile sites. The F-105 was commonly known as the "Thud" by its crews. It is the only American aircraft to have been removed from combat due to high loss rates. As a follow-on to the Mach 1 capable North American F-100 Super Sabre, the F-105 was also armed with missiles and a rotary cannon; however, its design was tailored to high-speed low-altitude penetration carrying a single nuclear weapon internally. First flown in 1955, the Thunderchief entered service in 1958. The single-engine F-105 could deliver a bomb load greater than so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XF-103
The Republic XF-103 was an American project to develop a powerful missile-armed interceptor aircraft capable of destroying Soviet bombers while flying at speeds as high as Mach 3. Despite a prolonged development, it never progressed past the mockup stage. Development In 1949, the USAF issued a request for an advanced supersonic interceptor to equip the Air Defense Command. Known formally as Weapon System WS-201A, but better known informally as the 1954 interceptor, it called for a supersonic aircraft with all-weather capability, powerful aircraft interception radar, and air-to-air missile armament. Republic was one of six companies to submit proposals. On 2 July 1951, three of the designs were selected for further development, Convair's scaled-up XF-92 that evolved into the F-102, a Lockheed design that led to the F-104, and Republic's AP-57. AP-57 was an advanced concept to be built almost entirely of titanium and capable of Mach 3 at altitudes of at least . A full-sca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SR-71
The Lockheed SR-71 "Blackbird" is a retired Range (aeronautics), long-range, high-altitude, Mach number, Mach 3+ military strategy, strategic reconnaissance aircraft developed and manufactured by the American aerospace company Lockheed Corporation. Its nicknames include "Common blackbird, Blackbird" and "Protobothrops flavoviridis, Habu". The SR-71 was developed in the 1960s as a black project by Lockheed's Skunk Works division. American aerospace engineer Kelly Johnson (engineer), Clarence "Kelly" Johnson was responsible for many of the SR-71's innovative concepts. Its shape was based on the Lockheed A-12, a pioneer in stealth technology with its reduced radar cross section, but the SR-71 was longer and heavier to carry more fuel and a crew of two in tandem cockpits. The SR-71 was revealed to the public in July 1964 and entered service in the United States Air Force (USAF) in January 1966. During missions, the SR-71 operated at high speeds and altitudes (Mach 3.2 at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unstart
In supersonic aerodynamics, an unstart refers to a generally violent breakdown of the supersonic airflow. The phenomenon occurs when mass flow rate changes significantly within a duct. Avoiding unstarts is a key objective in the design of the engine air intakes of supersonic aircraft that cruise at speeds in excess of Mach 2.2. Etymology The term originated during the use of early supersonic wind tunnels. “Starting” the supersonic wind tunnel is the process in which the air becomes supersonic; ''unstart'' of the wind tunnel is the reverse process. The shock waves that develop during the starting or unstart process may be visualized with schlieren or shadowgraph optical techniques. In some contexts, the terms aerodynamic disturbance (AD) and unstart have been synonymous. In aircraft engine intakes The design of some air intakes for supersonic aircraft can be compared to that of supersonic wind tunnels, and requires careful analysis in order to avoid unstarts. At high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conservation Of Mass
In physics and chemistry, the law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter the mass of the system must remain constant over time. The law implies that mass can neither be created nor destroyed, although it may be rearranged in space, or the entities associated with it may be changed in form. For example, in chemical reactions, the mass of the chemical components before the reaction is equal to the mass of the components after the reaction. Thus, during any chemical reaction and low-energy thermodynamic processes in an isolated system, the total mass of the reactants, or starting materials, must be equal to the mass of the products. The concept of mass conservation is widely used in many fields such as chemistry, mechanics, and fluid dynamics. Historically, mass conservation in chemical reactions was primarily demonstrated in the 17th century and finally confirmed by Antoine Lavoisier in the late 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
F-100 Super Sabre
The North American F-100 Super Sabre is an American supersonic jet fighter aircraft designed and produced by the aircraft manufacturer North American Aviation. The first of the Century Series of American jet fighters, it was the first United States Air Force (USAF) fighter capable of supersonic speed in level flight. The F-100 was envisioned during the late 1940s as a higher-performance successor to the F-86 Sabre air superiority fighter. Initially referred to as the ''Sabre 45'', it was delivered as an unsolicited proposal to the USAF in January 1951, leading to two prototypes being ordered one year later following modifications. The first ''YF-100A'' performed its maiden flight on 25 May 1953, seven months ahead of schedule. Flight testing demonstrated both the F-100's promising performance and several deficiencies, which included its tendency of yaw instability and inertia coupling that led to numerous fatal accidents. On 27 September 1954, the F-100A officially entered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stagnation Pressure
In fluid dynamics, stagnation pressure, also referred to as total pressure, is what the pressure would be if all the kinetic energy of the fluid were to be converted into pressure in a reversable manner.; it is defined as the sum of the free-stream static pressure and the free-stream dynamic pressure. The Bernoulli equation applicable to incompressible flow shows that the stagnation pressure is equal to the dynamic pressure and static pressure combined.Clancy, L.J. (1975), ''Aerodynamics'', Pitman Publishing Limited, London. In compressible flows, stagnation pressure is also equal to total pressure as well, provided that the fluid entering the stagnation point is brought to rest Isentropic flow, isentropically. Stagnation pressure is sometimes referred to as pitot pressure because the two pressures are equal. Magnitude The magnitude of stagnation pressure can be derived from Bernoulli's principle, Bernoulli equation for incompressible flow and no height changes. For any two po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
