History of Snecma Atar 9. 1955 year.<\/h3>\n
In 1948, the Snecma Atar 101 engine was built. However, this engine was not very successful. Competitors: British, Americans and even Russians, in the mid-50’s were far ahead. In addition, there were no buyers to buy an engine abroad.<\/p>\n
The French decided to radically rebuild the engine. The Atar 08 program was launched. The dimensions of the new engine have slightly improved. The compressor has grown from 7 stages to 9 stages. Compression increased to 5.5: 1. The turbine has been completely rebuilt, increasing its diameter. New alloys were introduced, including magnesium alloys. The Atar 08B-3 engine, the first mass-produced engine, had a thrust of 41.81 kN. Engine weight 1,456 kg. The Atar 8\/9 engine was still a single shaft, single flow engine. The difference between Atar 8 (08) and Atar 9 (09) is the fact that the afterburner is built in.<\/p>\n
The Atar 09 engine in January 1957 achieved afterburning thrust of 54.71 kN (12,300 lbf), and after a few weeks it had a thrust of 58.72 kN (13,200 lbf). Initially, the adjustable outlet nozzle consisted of two movable halves. Later, 18-petals were introduced, which significantly improved the work of the outlet. In 1959, a new engine starter was developed in the form of a micro-turbine, which started the engine speed under compressed air.<\/p>\n
The next version had a thrust of 42 kN (4,282 kG), and 58.9 kN (6,006 kG) with afterburning. In the Atar 09 \/ Atar 9 engine, the rear section of the engine was made of titanium, which allowed for the continuous operation of the afterburner at Ma 2 speed.<\/p>\n
Finally, work on the Atar 8 and 9 engines was successful. The engines powered several French-made combat aircraft: Etendard, Super Etendard, Mirage III, Mirage 5, Mirage 50, Mirage F1, Mirage IV.<\/p>\n
Atar 9 engine data:<\/h3>\n
The single-flow, single-shaft engine received a 9-stage axial compressor. Compressor 5.2: 1 compression. Combustion chamber. 2-stage turbine. Afterburner. Length 5.90 m, diameter 1.00 m, weight 1,456 kg. 42.00 kN draft without afterburning and 58.90 kN with afterburning. Air flow through the engine 68 kg \/ s. fuel consumption 103 kg \/ (kN h) without afterburning and 207 kg \/ (kN h) with afterburning. The engine is started by compressed air generated by a starter (micro-turbine) located in a cone in front of the air inlet.<\/p>\n
Written by Karol Placha Hetman<\/p>\n","protected":false},"excerpt":{"rendered":" The French decided to radically rebuild the engine. The Atar 08 program was launched. The dimensions of the new engine have slightly improved. The compressor has grown from 7 stages to 9 stages. Compression increased to 5.5: 1. The turbine has been completely rebuilt, increasing its diameter. New alloys were introduced, including magnesium alloys. The Atar 08B-3 engine, the first mass-produced engine, had a thrust of 41.81 kN. Engine weight 1,456 kg. The Atar 8\/9 engine was still a single shaft, single flow engine. The difference between Atar 8 (08) and Atar 9 (09) is the fact that the afterburner is built in.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-2110","post","type-post","status-publish","format-standard","hentry","category-articles"],"_links":{"self":[{"href":"https:\/\/polot.net\/index.php?rest_route=\/wp\/v2\/posts\/2110","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/polot.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/polot.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/polot.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/polot.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2110"}],"version-history":[{"count":1,"href":"https:\/\/polot.net\/index.php?rest_route=\/wp\/v2\/posts\/2110\/revisions"}],"predecessor-version":[{"id":2365,"href":"https:\/\/polot.net\/index.php?rest_route=\/wp\/v2\/posts\/2110\/revisions\/2365"}],"wp:attachment":[{"href":"https:\/\/polot.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2110"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/polot.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2110"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/polot.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2110"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}