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Atar is the Zoroastrian concept for "burning and unburning fire" and "visible and invisible fire".
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Atar may also refer to:
Atar is the Zoroastrian concept for "burning and unburning fire" and "visible and invisible fire".
Atar may also refer to:
The Dassault Mirage III is a family of single/dual-seat, single-engine, fighter aircraft developed and manufactured by French aircraft company Dassault Aviation. It was the first Western European combat aircraft to exceed Mach 2 in horizontal flight, a feat which was achieved on 24 October 1958.
Safran Aircraft Engines, previously Snecma or Snecma Moteurs, is a French aerospace engine manufacturer headquartered in Courcouronnes and a subsidiary of Safran. It designs, manufactures and maintains engines for commercial and military aircraft as well as rocket engines for launch vehicles and satellites.
9K may refer to:
The Snecma Atar is a French axial-flow turbojet engine built by Snecma. It was derived from the German World War II BMW 018 design, and developed by ex-BMW engineers through a progression of more powerful models. The name is derived from its original design group, Atelier technique aéronautique de Rickenbach near Lindau within the French Occupation Zone of Germany. The Atar powered many of the French post-war jet aircraft, including the Vautour, Étendard and Super Étendard, Super Mystère and several models of the Mirage.
The SNECMA M53 is an afterburning turbofan engine developed for the Dassault Mirage 2000 fighter by Snecma. The engine is in service with different air forces, including the latest Mirage 2000-5 and 2000-9 multirole fighters.
The Rolls-Royce/SNECMA M45H is an Anglo-French medium bypass ratio turbofan produced specifically for the twin-engined VFW-Fokker 614 aircraft in the early 1970s.
Jet engines and other gas turbine engines are often uprated by adding a zero-stage, sometimes written '0' stage, to the front of a compressor. At a given core size, adding a stage to the front of the compressor not only increases the cycle overall pressure ratio, but increases the core mass flow. A further uprating may be done by adding another stage in front of the previously-added zero stage, in which case the new one may be known as a zero-zero stage.
In aeronautical engineering, overall pressure ratio, or overall compression ratio, is the ratio of the stagnation pressure as measured at the front and rear of the compressor of a gas turbine engine. The terms compression ratio and pressure ratio are used interchangeably. Overall compression ratio also means the overall cycle pressure ratio which includes intake ram.
The SNECMA C.450 Coléoptère was a vertical take-off and landing (VTOL) aircraft that was designed by the French company SNECMA and manufactured by Nord Aviation. While work on the aircraft proceeded to the test flying phase, the project never progressed beyond experimental purposes.
The Arsenal VG 90 was a French carrier-based jet-engined interceptor developed in the late 1940s. It was intended to compete for an Aéronavale contract and first flew in 1949. It set a speed record for a French aircraft the following year, but both of the completed prototypes were destroyed in fatal crashes and the program was cancelled in 1952 before the third prototype was finished. The Aéronavale contract was eventually awarded to a license-built British aircraft. The remains of the last VG 90 were scrapped in 1978.
The SNECMA Atar Volant or C.400 P1 was a French turbojet engine produced by SNECMA as part of their "Atar" series. Encased in a basic fairing which could hold fuel and remote-control equipment, the unit weighed 5,600 pounds (2,500 kg), and generated a thrust of approximately 6,200 pounds-force ; the Atar Volant was able to cause vertical lift, which was precisely its purpose. There were later Atar Volant models, each made improvements and alterations to the previous designs, and eventually resulted in a full-fledged craft.
A coleopter is a type of VTOL aircraft design that uses a ducted fan as the primary fuselage of the entire aircraft. Generally they appear to be a large barrel-like extension at the rear, with a small cockpit area suspended above it. Coleopters are generally designed as tail-sitters. The term is an anglicisation of the French coléoptère "beetle" after the first actual implementation of this design, the SNECMA Coléoptère of the mid-1950s.
The Leduc 022 was the prototype of a mixed-power French interceptor built in the mid-1950s. Designer René Leduc had been developing ramjet-powered aircraft since before World War II and had flown a series of experimental aircraft, the Leduc 0.10 and Leduc 0.21, throughout the Fifties before he was awarded a contract for two examples of a short-range supersonic interceptor armed with two air-to-air missiles (AAMs).
The SNCASE S.E.5000 Baroudeur was a French single-engined lightweight fighter designed by SNCASE (Sud-Est) for the NATO NBMR-1 "Light Weight Strike Fighter" competition. An unusual design without a conventional landing gear, it used a wheeled trolley for take-off and three retractable skids to land. The Baroudeur did not enter production.
The "Australian Tertiary Admission Rank" (ATAR) for all "intrastate" "domestic students", or the ATAR-based "Combined Rank" (CR) for all "interstate" or "International Baccalaureate" (IB) or "overseas-HSC " holder "domestic students", is the primary critria for determining the "Selection Rank" (SR) for the admission into undergraduate courses in Australian public universities. ATAR & CR are not used for the admission into postgraduate courses. The "Domestic Students" (DS) are the students who are Australian or New Zealand citizen, or Australian permanent residents, or the holder of long-term refugee visa. All others are considered "International Students" (IS). ATAR & CR are not applicable to the international students as they must apply directly to each university separately and their SR is calculated by the university. ATAR is calculated by each state or territory's own state-level "Tertiary Admission Center" (TAC) for all domestic students studying within their geographical limits and it is used for admission within that state or territory where the student obtained HSC. "Combined Rank" (CR) is calculated by "Australasian Conference of Tertiary Admission Centres" (ACTAC) to establish national-level equivalency of ATAR across all states and territories of Australia and New Zealand by using a conversion table. CR is needed for the domestic students who wish to apply interstate, i.e. they obtained the HSC in one state and want to enroll in the university in another state, or those domestic students who did not go to Australian state's school board but instead studied in IB school in Australia or overseas, or the domestic students who completed their HSC or equivalent qualification overseas, or the Australian citizens who apply to universities in New Zealand. CR is also used by the public universities in New Zealand for granting admission to Australian citizens, as Australian citizens are considered domestic students in New Zealand under the reciprocal arrangement. "Interstate Domestic Students" must apply to the TAC of their respective state. "Intrastate Domestic Students" (IntraDS) or "Overseas Domestic Students" (ODS) must apply to the TAC of each of the state they wish to apply to, and TAC will use the ACTAC conversion table to calculate the "Combined Rank". The "Selection Rank" (SR) is calculated by each University separately based on the ATAR or CR as well as the additional points for university's unique criteria such as "a personal statement, a questionnaire, a portfolio of work, an audition, an interview or a test" or leadership and high performance, as well as special considerations such as lack of access to education and other disadvantages e.g. rural, Indigenous Australian or financially suffering applicants. ATAR is, not a mark or the score in the HSC, but a "percentile ranking" between 0.00 and 99.95 which shows the student’s relative position compared to all other students in the range of 16 to 20 years old who have completed their HSC exams in that state in any year. Higher ATAR is better, e.g. ATAR of 80 for a student means that the particular student is ranked in the 20th percentile range and 19% of other ATAR-eligible students are ranked higher than him and 80% of other ATAR-eligible students are ranked below him. ATAR for a specific year, is not based only on the students who passed the HSC within that year. ATAR for a specific year is calculated by including all the domestic students who are between the age of 16 to 20 in that year and have passed the HSC within that state in any year. While calculating the ATAR for a specific year, the following types of students are not given an ATAR rank, the 16-20 years old students who quit studying or did not pass the HSC, or who passed but are below the age of 16, or who passed but are above the age of 20. Due to these exclusions, the average ATAR is 70, without these exclusions the average ATAR would be 50.
The SNECMA ATAR 101 is a French axial-flow turbojet engine built by SNECMA. It was derived from engines and design work carried out at BMW in Germany during World War II, and extensively developed though a progression of more powerful models. The name is derived from its original design group, Atelier Technique Aéronautique de Rickenbach employing Hermann Östrich and many of the wartime BMW gas turbine design group as well as other German engine design teams. The ATAR 101 powered many of the French post-war jet aircraft, including the Vautour II, Étendard IV, Super Mystère B2, and the Mirage III-001, prototype of the Mirage III series.
The BMW 018 was an early axial-flow turbojet engine project by BMW AG in Germany.
The Musée aéronautique et spatial Safran is a French private aviation museum located in Melun, Seine-et-Marne. Established in May 1989 the museum contains a large collection of historic and modern aircraft engines. These engines have been produced by various French engine manufacturers such as Gnome et Rhône and Snecma which are now part of the present day Safran company. The latter is the creator and manager of the museum.
Hermann Oestrich was a German-French engineer. He was involved in the development of jet engines as an employee of BMW and later of Snecma.