| 词条 | IAR 79 | |||||||||||||||||
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The IAR 79 was a twin-engine bomber and military reconnaissance aircraft with a wood and metal structure that saw service in World War II built under licence in Brasov Romania by Industria Aeronautică Română DevelopmentIn May 1937, Romania ordered 24 Savoia-Marchetti SM.79B bombers powered by two Romanian-built IAR K14 engines. This variant was designated SM-79B and equipped the 1st Bomber Group (71st and 72nd Bomber Squadron).{{Citation needed|date=December 2010}} Second batch of aircraft were upgraded by replacing the IAR K14 engines with 1200 hp water cooled Junkers Jumo 211Da engines increasing the maximum speed from 350 km/h to 405 km/h. Eight of these new airplanes were ordered in Italy. They were designated JIS-79B (Jumo Italian S-79B). But they didn't arrive until August 1941. An additional 36 aircraft were license built in IAR factory in Brasov under designation IAR 79 JR (Jumo Român).{{Citation needed|date=December 2010}} In the autumn of 1942 another order of 36 bombers was issued to the IAR factory. They were upgraded by replacing the Junkers Jumo 211Da engine with new Junkers Jumo 211F,a 1400 HP engine.{{Citation needed|date=December 2010}} DesignThe IAR.79 was a cantilever low-wing monoplane bimotor, with a retractable taildragger undercarriage. The fuselage of the IAR.79 was made of a welded tubular steel frame and covered with duralumin in the forward section, duralumin and plywood on the upper fuselage surface, and fabric on all other surfaces [1] The wings were of all-wood construction, with the trailing edge flaps and leading edge slats (Handley-Page type) to offset its relatively small size. The internal structure was made of three spars, linked with cantilevers and a skin of plywood. The wing had a dihedral of 2° 15'. Ailerons were capable of rotating through +13/-26°, and were used together with the flaps in low-speed flight and in takeoff. Its capabilities were significantly greater than its predecessor, the SM.79, with over 1,850 kW (2,800 hp) available and a high wing loading that gave it characteristics not dissimilar to a large fighter. The engines fitted to the main bomber version were two 750 kW (1000 hp) IAR K14 radials, equipped with variable-pitch, all-metal three-bladed propellers. Speeds attained were around 430 km/h (270 mph) at 4,250 m (13,940 ft), with a relatively low practical ceiling of 6,500 m (21,330 ft). Cruise speed was 373 km/h (232 mph) at 5,000 m (16,400 ft), but the best cruise speed was 259 km/h/161 mph (60% power). The landing was characterized by a 200 km/h (120 mph) final approach with the slats extended, slowing to 145 km/h (90 mph) with extension of flaps, and finally the run over the field with only 200 m (656 ft) needed to land (2,050 rpm, 644 Hg pressure). With full power available and flaps set for takeoff, the SM.79 could be airborne within 300 m (980 ft).{{Citation needed|date=December 2010}} Variants
Romanian designation of the Savoia-Marchetti SM.79B bombers with 2 x IAR K14 1000 HP engine. Italian Built{{Citation needed|date=December 2010}}
Romanian designation of the Savoia-Marchetti SM.79B bombers with twith 2 x Junkers Jumo 211Da 1200 HP engine, The aircraft made were Italian-built.{{Citation needed|date=December 2010}}
Romanian designation of the IAR 79 with 2 x Junkers Jumo 211Da 1200 HP engine , built under license by IAR factory. A total of 36 were manufactured by the Romanian factory (numbered 101-136).[2]
Romanian designation of the IAR 79 with 2 x Junkers Jumo 211F 1400 HP engine, built by IAR factory. A total of 36 were manufactured by the Romanian factory (numbered 201-236).[3] Operational serviceInitial in 1938 S-79Bs equipped the 1st Bomber Group (71st and 72nd Bomber Squadron). In July 1941, one of the 2nd Bomber Group's squadrons, the 75th Bomber Squadron, was re-equipped with new JRS-79B, These went on to fight in the battle of Odessa. In 1942 newer JIS-79Bs were assigned to the 71st Squadron. The 72nd Squadron was re-equipped with JRS-79B. The remaining older S-79Bs were transferred to flying schools. In 1944 the 2nd Bomber Group (82nd and 83rd Squadron) was re-equipped with IAR JRS-79B1. In October 1944 the 1st Bomber Group was reorganized (72nd and 82nd Squadron) and sent to the front . This unit fought on until the end of the war in May 1945.{{Citation needed|date=December 2010}} Operators
Specifications{{aerospecs|ref=Janes 1938[4] |met or eng?=met |crew=5 |capacity= |length m=16.82 |length ft=55.18 |length in= |span m=21.2 |span ft=69.55 |span in= |height m=4.1 |height ft=13.45 |height in= |wing area sqm= |wing area sqft= |aspect ratio= |wing profile= |empty weight kg=6400 |empty weight lb= |gross weight kg=11785 |gross weight lb= |eng1 number=2 |eng1 type=Junkers Jumo 211 F Watercooled Inverted V-12 |eng1 kw=986 |eng1 hp=1320 |max speed kmh=(at 6000 m) 436 |max speed mph=272 |max speed mach= |cruise speed kmh= |cruise speed mph= |stall speed kmh= |stall speed mph= |range km=1750 |range miles= |endurance h=2 |endurance min=10 |ceiling m=9000 |ceiling ft= |g limits= |roll rate= |glide ratio= |climb rate ms= |climb rate ftmin= |sink rate ms= |sink rate ftmin= |armament1=5 x 7.92 mm machine guns |armament2=1 x 20 mm cannon |armament3=1500 kg of bombs |armament4= |armament5= |armament6= }} References1. ^Mondey 1996, p. 236. 2. ^Mark Axworthy, London: Arms and Armour, 1995, Third Axis, Fourth Ally: Romanian Armed Forces in the European War, 1941–1945, p. 270 3. ^Mark Axworthy, London: Arms and Armour, 1995, Third Axis, Fourth Ally: Romanian Armed Forces in the European War, 1941–1945, p. 270 4. ^Grey, C.G. and Bridgman, L., Jane's All the World's Aircraft 1938.(1972). Newton Abott: David & Charles {{ISBN|0-7153-5734-4}} External links{{commons category|IAR Braşov}}
6 : IAR aircraft|Romanian military reconnaissance aircraft 1930–1939|Romanian bomber aircraft 1930–1939|World War II medium bombers|World War II Romanian reconnaissance aircraft|Aircraft first flown in 1937 |
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