{"id":4958,"date":"2021-02-23T17:04:23","date_gmt":"2021-02-23T16:04:23","guid":{"rendered":"http:\/\/tst.minijets.org\/?page_id=4958"},"modified":"2022-10-24T13:07:55","modified_gmt":"2022-10-24T11:07:55","slug":"fairchild-j-44s","status":"publish","type":"page","link":"https:\/\/minijets.org\/fr\/300-500\/fairchild-j-44s\/","title":{"rendered":"Fairchild J44"},"content":{"rendered":"\n
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\"Fairchild
Cutaway view of the Fairchild J44, source : Machine and Tool Blue Book 1954-01<\/figcaption><\/figure>\n\n\n\n
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La\u00a0Fairchild Engine Divisio<\/strong>n d\u00e9marra son projet d’\u00e9tude pour un petit r\u00e9acteur “bon march\u00e9” en 1946. Il devait \u00eatre utilis\u00e9 par la suite sur les missiles guid\u00e9s que la compagnie \u00e9tait entrain de d\u00e9velopper.\u00a0<\/p>\n\n\n\n

En juin 1947<\/strong>, Fairchlid, s’est vue attribu\u00e9e par l’US Navy un contrat pour un r\u00e9acteur de faible puissance, destin\u00e9 \u00e0  \u00e9quip\u00e9 un missile anti-sous-marin. Ce moteur, d\u00e9sign\u00e9 J44<\/strong>, a \u00e9t\u00e9 le premier r\u00e9acteur am\u00e9ricain “consommable”, pour lequel une dur\u00e9e de vie d’au plus 10 heures \u00e9tait requise.<\/p>\n<\/div>\n<\/div>\n\n\n\n

Pr\u00e9sentation du Fairchild J44<\/h2>\n\n\n\n
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Le compresseur<\/h3>\n\n\n\n

C’\u00e9tait un compresseur \u00e0  flux mixte, axiaux et centrifuges et \u00e0  aubes courbes. Il \u00e9tait construit d’une seule pi\u00e8ce coul\u00e9e en alliage de magn\u00e9sium qui ne n\u00e9cessitait aucun usinage des pales.<\/p>\n\n\n\n

Le diffuseur<\/h3>\n\n\n\n

Similaire au compresseur dans sa conception, la section de diffuseur, avec 3 rang\u00e9es d’aubes de guidage, \u00e9tait usin\u00e9e d’une seule pi\u00e8ce.<\/p>\n\n\n\n

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Combustion chamber<\/h3>\n\n\n\n

An annular combustion chamber was made from sheet metal and used commercialy available oil burners.<\/p>\n\n\n\n

Turbine<\/h3>\n\n\n\n

The single stage turbine had its blades welded on to a forged steel disc. A simple, stock stainless steel tube, with a welded flange at each end, formed the rotor connecting the turbine to the compressor.<\/p>\n\n\n\n

The was a bearing before the compressor and aft of the turbine and a fixed-area exhaust nozzle was used. <\/p>\n\n\n\n

In August 1948<\/strong> the XJ44 made its first run.<\/p>\n\n\n\n

The first flight<\/strong> was made in mid 1950<\/strong> when it powered Fairchild’s Petrel Missile.<\/p>\n\n\n\n

As service trial proceeded, so problems with J44 where thrown up, most of them attribuable to over-simplified production. A lot of changes were required, and development of J44 was completed by October 1954 under designation : J44-R-3<\/strong>.<\/p>\n\n\n\n

The Improved engine was mounted on a Fairchild C-82<\/strong> cargo aircraft, then later to each wingtips of the Fairchild C-123B<\/strong> cargo aircraft.<\/p>\n\n\n\n

Another use of the J44 was one the experimental Bell model 65 VTOL<\/strong> Aircraft.<\/p>\n\n\n\n

The main usage of the J44 was to power the Firebee drone, although, with a specific fuel consumption of 1,55 it could not compete with Continental’s J-69 (Licence version of Turbomeca’s Marbore) and it was taken out of production by 1959. <\/p>\n<\/div>\n<\/div>\n\n\n\n

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Application<\/h2>\n\n\n
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Bell model 65 Air Test Vehicule (ATV)<\/a><\/h3> <\/div>\n

Le Bell model 65 Air Test Vehicule (ATV) \u00e9tait un projet exp\u00e9rimental d’avion \u00e0 d\u00e9collage vertical utilisant deux turbor\u00e9acteurs \u00e0 la fois pour le vol vertical et le vol horizontal.  Il s’agissait de 2 Fairchild J44, chacun d’eux ayant une puissance de 454 kg de pouss\u00e9e. Ils \u00e9taient mont\u00e9s de part et d’autre, le long […]<\/p>\n<\/div>\n <\/div>\n<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t <\/div>\n\n <\/div>\n \n\n\n

Application comme r\u00e9acteur d’appoint<\/h2>\n\n\n
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Wingtip Jets Provide Power Safety Margin<\/a><\/h3> <\/div>\n

AVIATION WEEK, February 14, 1953 Additional 2,000 Ib. total thrust provided by small Fairchild J44 turbojets installed on wingtips of Fairchild C-123B give the plane climb rate of 500 fpm. after featherering one prop during takeoff, compared with 150-fpm. climb using only piston engine.Modified C-123B is pictured performing with left prop feathered during recent demonstrations […]<\/p>\n<\/div>\n <\/div>\n<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t

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Fairchild Tests Jet Assist for Transports<\/a><\/h3> <\/div>\n

AVIATION WEEK, September 27, 1954 To determine the value of jet assistance in increasing takeoff loads and rate of climb, Fairchild Engine & Airplane Corp.’s Ait- craft Division, Hagerstown, Md., is testing a C-82 with a Fairchild J44 turbojet atop the fuselage between the piston engines. The J44 gives an added 1,000 Ib. thrust on […]<\/p>\n<\/div>\n <\/div>\n<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t <\/div>\n\n <\/div>\n \n\n\n

Application sur Missiles et Drones<\/h2>\n\n\n\n
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Fairchild’s Petrel missile fitted with J44 jet engine<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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Ryan Firebee powered by a Fairchilf J44. Source : Aviation week, Feb. 1958<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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La\u00a0Fairchild Engine Division d\u00e9marra son projet d’\u00e9tude pour un petit r\u00e9acteur “bon march\u00e9” en 1946. Il devait \u00eatre utilis\u00e9 par la suite sur les missiles guid\u00e9s que la compagnie \u00e9tait entrain de d\u00e9velopper.\u00a0 En juin 1947, Fairchlid, s’est vue attribu\u00e9e par l’US Navy un contrat pour un r\u00e9acteur de faible puissance, destin\u00e9 \u00e0  \u00e9quip\u00e9 un missile […]<\/p>\n","protected":false},"author":1,"featured_media":3558,"parent":623,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"cybocfi_hide_featured_image":"","footnotes":""},"categories":[15],"tags":[],"planes-000-100":[],"class_list":["post-4958","page","type-page","status-publish","has-post-thumbnail","hentry","category-jet-engine-300-500"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/minijets.org\/fr\/wp-json\/wp\/v2\/pages\/4958","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/minijets.org\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/minijets.org\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/minijets.org\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/minijets.org\/fr\/wp-json\/wp\/v2\/comments?post=4958"}],"version-history":[{"count":0,"href":"https:\/\/minijets.org\/fr\/wp-json\/wp\/v2\/pages\/4958\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/minijets.org\/fr\/wp-json\/wp\/v2\/pages\/623"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/minijets.org\/fr\/wp-json\/wp\/v2\/media\/3558"}],"wp:attachment":[{"href":"https:\/\/minijets.org\/fr\/wp-json\/wp\/v2\/media?parent=4958"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/minijets.org\/fr\/wp-json\/wp\/v2\/categories?post=4958"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/minijets.org\/fr\/wp-json\/wp\/v2\/tags?post=4958"},{"taxonomy":"planes-000-100","embeddable":true,"href":"https:\/\/minijets.org\/fr\/wp-json\/wp\/v2\/planes-000-100?post=4958"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}