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	Wright R-3350 - Wikipedia, the free encyclopedia
		In 1927 Wright Aeronautical introduced their famous Cyclone engine, which powered a number of designs in the 1930s.
		The new Wright R-1820 Cyclone 9 first ran successfully in 1935, and would become one of the most-used aircraft engines in the 1930s and WWII.
		The result were two designs with a somewhat shorter stroke, a 14 cylinder design that would evolve into the Wright R-2600, and a much larger 18 cylinder design that became the R-3350.
	en.wikipedia.org /wiki/Wright_R-3350 (701 words)

	Wright Aeronautical Engines in 1937 - USA
		Wright Aeronautical Corporation, Paterson, N. J., the aircraft engine manufacturing division of the Curtiss-Wright Corporation, announced that during the first six months of 1936 more than 1,300 of their Wright Whirlwinds and Cyclones had been sold to aircraft manufacturers, air line operating companies and military services throughout the world.
		They were the Wright Cyclones F and F-50 and the Wright Cyclone G Series high-powered, nine cylinder radial aircooled engines; the single-row Whirlwind series of five, seven and nine cylinders; the 14 cylinder Wright double-row Whirlwind Series, and the Curtiss Conquerors.
		During 1936 the Wright Company pioneered in the installation of Magnaflux testing equipment for the inspection of steel parts, nitriding equipment and furnaces to provide a super-hard bore in Cyclone cylinder barrels and machinery for the grinding of studs.
	www.aviation-history.com /engines/wr-1937.htm (1138 words)

	The Curtiss-Wright Corporation
		The Wright R-3350 "Cyclone" was one of the most powerful radial aircraft engines produced in the United States.
		There was really only one company—Pratt and Whitney—competing with Wright for the engine market, and the extreme precision needed to produce engines prevented other companies from joining the industry.
		Wright engines also powered the DC-1/DC-2, and DC-3 aircraft and enabled Douglas to design the DC-1 as a twin-engine plane rather than as a tri-engine.
	www.centennialofflight.gov /essay/Aerospace/Curtiss_wright/Aero9.htm (1540 words)

	Wright Cyclone 9 R1820 (Site not responding. Last check: 2007-10-08)
		Wright Aeronautical Corp. introduced the first R-1820 in 1931.
		Developed from earlier "Cyclone" engines of the 1925-1930 era, the R-1820 was larger and more powerful than its predecessors.
		[ Wright Cyclone 18 R3350-24 WA 1944 ]
	www.bcam.net /engines/wcyclone9.htm (187 words)

	2-5 Dube Paper
		Cyclone forecasting must be further improved, and applied to drive models for forecasting storm surges.
		There are several aspects of the cyclone and storm surge warning systems and the disaster mitigation that require considerable improvements so as to bring about better response and minimize the loss of life and property.
		Variables (i), (v), and (vi) of tropical cyclone are needed for the computation of the cyclone wind field, which is the foremost requirement for the computation of surges.
	www.aoml.noaa.gov /hrd/iwtc/Dube2-5.html (4544 words)

	Wright Cyclone 1820 radial engine
		The Wright Cyclone was a straightforward development of that engine--nine large cylinders around the propeller shaft, like the spokes of a wheel.
		As a piston moved toward the hub, the cylinder filled with 201 cubic inches of air mixed with gasoline, to be fired by two sparkplugs; the heat was carried away by cooling fins like those on a lawnmower.
		On the Cyclone there is a stamped metal cover, one to each side of the cyclinder seated on a gasket to allow access to the rocker and valve stem.
	www.warbirdforum.com /cyclone.htm (1639 words)

	Wright Aeronautical
		Orville and Wilber Wright made the world's first powered heavier-than-air flight on 17 December 1903 and sold the first military aircraft to the U.S. Army Signal Corps in 1909.
		Wright's president, chief engineer and chief designer left in 1924 to form Pratt and Whitney.
		Both Curtiss aircraft and Wright engines declined rapidly in the early 1950s and were effectively out of the airframe and aircraft engine business by the end of the decade.
	www.shanaberger.com /engines/wright.htm (239 words)

	Cyclone vs Dust collection - Sawmill Creek
		A cyclone is a funnel-shaped device with the motor and impeller mounted on top that separates out all but the finest dust and drops it into an easily-changed bin below the cyclone.
		Cyclones use the cyclone seperator to remove the bigger chips (mostly bigger than 10 microns) before they reach the impeller.
		Cyclones typically all use cartridge filters that are much better than the bags.
	www.sawmillcreek.org /showthread.php?t=5837 (364 words)

	Curtiss-Wright Corporation - A Brief History (Site not responding. Last check: 2007-10-08)
		Wright Aeronautical soon lost some of its engineering talent to a small machine shop, Pratt and Whitney, whose first product was another superlative radial engine, the Pratt and Whitney Hornet.
		Wright Aeronautical - producer of the great air-cooled radial engines that would power US fighter and bomber aircraft in World War II Curtiss Propeller Division - originator of the Electric Propeller, a leading manufacturer of props in the high power range during World War II.
		Wright Cyclones powered Jimmy Doolittle's sixteen B-25's that took off from the aircraft carrier dubbed "Shangri-La" off the coast of Japan and bombed Tokyo, Nagoya and other cities a few months after Pearl Harbor.
	www.curtisswright.com /history/1941-1945.asp (1980 words)

	1940 Wright Cyclone (Site not responding. Last check: 2007-10-08)
		By 1932 the Series F Cyclone 9 produced 575 hp from 1820 cu.
		The Cyclone 14/R-2600 is a direct development of the Cyclone 9 and had a final rating of 1525 hp at 2300 rpm., 1,000 hp more than the first of the series.
		Specifications: Manufacturer's designation Cyclone 14, military designation R-2600; 14-cylinder, air-cooled radial arranged in two rows of seven cylinders each; bore 6.1 in., stroke 6.3 in., displacement 2603 cu.
	www.ohtm.org /eng_cyclone.html (95 words)

	Encyclopedia: Lockheed Hudson
		The Hudson Mk III added one ventral and two beam machine guns and replaced the 1,100 hp Wright Cyclone 9-cylinder radials with 1,200 hp versions (428 produced).
		The Hudson Mk V (309 produced) and Mk VI (450 produced) were powered by the 1,200 hp Pratt and Whitney Twin Wasp 14-cylinder two-row radial.
		The RAAF Roundel is based on that of the British Royal Air Force, with the central circle replaced by a Kangaroo, a symbol of Australia.
	www.nationmaster.com /encyclopedia/Lockheed-Hudson (2047 words)

	B-29 Superfortress - Chrysler and Dodge contributions
		The era of the Wright Cyclone engine actually began in 1927, as a nine-cylinder, hemispherical combustion chamber, air-cooled unit of 525 horsepower.
		Higher compression ratios and effective supercharging applied to those 3,350 cubic inches of displacement were the principal routes to the eventual 2,200 horsepower unit that Dodge was to learn to build under urgent, emergency conditions.
		Wright engineers wrestled with cooling challenges that included increasing the aluminum fins on each cylinder barrel from 40 to 54, thus enlarging cooling area to 325 square feet per cylinder head and barrel--for a total of 5,850 square feet per engine.
	www.allpar.com /history/military/b-29.html (3380 words)

	Engines at the A.A.M. -- Curtiss-Wright Cyclone (Site not responding. Last check: 2007-10-08)
		Often mixed-up with other Wright engines, as well as the Pratt & Whitneys, the Cyclone's great moments was as the initial engine of the world's greatest transport, the Douglas DC-3, and the most famous American bomber of the Second World War, the Boeing B-17.
		The Cyclone went through several models, and mostly was mated with Curtiss airframes during the 1930s.
		Among the less successful uses of the Cyclone were on the ill-fated Brewster Buffalo.
	www.arkairmuseum.org /cyclone.html (210 words)

	Wright Cyclone - Encyclopedia, History, Geography and Biography (Site not responding. Last check: 2007-10-08)
		Wright Cyclone - Encyclopedia, History, Geography and Biography
		Wright Cyclone was the name given to a family of air-cooled radial piston engines designed by Curtiss-Wright, and used in numerous American aircraft in the 1930s and 1940s.
		The article about Wright Cyclone contains information related to Wright Cyclone and Cyclone family.
	www.arikah.com /encyclopedia/Wright_Cyclone (83 words)

	HAWK 75:-- PROMISE UNFULFILLED? (Site not responding. Last check: 2007-10-08)
		Eventually four radial engines were used: the Wright XR-1670-5 twin-row that equipped the prototype, the Pratt and Whitney R1535 twin-row ("Wasp Junior"), the Wright XR-1820-39, (later known as the "Wright Cyclone Nine") and, finally, the P & W R-1830 14-cyl "Twin Wasp".
		Neither the new Cyclone or Twin Wasp developed their promised power, although both later went on to achieve fame in such aircraft as the B-17, B-24, PBY, SBD and Wildcat.
		The Cyclone Hawk's climb rate was inferior to the Zero 21, as were nearly all fighters of that era, but speed was almost identical.
	curtisshawk75.bravepages.com (6218 words)

	wikien.info: Main_Page (Site not responding. Last check: 2007-10-08)
		The R-3350 Duplex-Cyclone was one of the most powerful radial aircraft engines produced in the United States.
		At about the same time Pratt & Whitney had started a development of their equally famous Wasp design into a larger and much more powerful two-row design that would easily compete with this larger Cyclone.
		In 1935 Wright decided to follow P&W's lead, and started to develop much larger engines based on the mechanicals of the Cyclone.
	pardus.info /index.php?title=Wright_R-3350 (683 words)

	New Page 1
		The B-29 was powered by four Wright R-3350 Duplex Cyclone-18 turbo supercharged engines.
		The Cyclone was an 18 cylinder radial engine arranged in two rows.
		They were plumbed into the exhaust of the Cyclone engine which spun up the turbines.
	www.angelfire.com /ar3/warbirds/page2e.htm (681 words)

	Boeing YB-29 - US Air Force Museum Bomber Virtual Aircraft Gallery (Site not responding. Last check: 2007-10-08)
		The engines were upgraded to the -21 model of the Wright Cyclone and three blade propellers of the XB-29 were changed to a 4-blade type for the YB-29.
		The first flight of the YB-29 was in the summer of 1943 and as testing proceeded a wide variety of modifications were tried one or more of the 14 aircraft ordered.
		The first YB-29 (41-36954) was modifed by replacing the Wright Cyclone radial engines with Allison V-3420-17 inline engines and redesignated XB-39.
	www.wpafb.af.mil /museum/research/bombers/b3-29.htm (300 words)

	Cyclone engine mitsubishi (Site not responding. Last check: 2007-10-08)
		Cyclone engine; The "Debonair V" (with 6G7 V6 engine onboard) is launched.
		Originally to be given the Wright R-2600 Cyclone engine of 1700 hp (1268 kW), the Hellcat was given the Pratt and Whitney...
		This was achieved most notably in the Wright Cyclone R-3350 engine, four of which powered the giant B-29 bomber.
	www.finescooter.com /cyclone-engine-mitsubishi.html (1407 words)

	Wright Cyclone R-3350
		The R-3350 Cyclone was designed in the US by the Wright Company.
		The Cyclone engine was first tested in May, 1937 and versions of the engine remained in production well into 1950's.
		In fact one aircraft could generate enough electricity to service 26 houses in the cold depths of the winter.
	acam.ednet.ns.ca /engines/cyclone.htm (129 words)

	Lockheed A-28 and A-29 Hudson -- Chapter 1 (Site not responding. Last check: 2007-10-08)
		It was powered by a pair of Wright Cyclone SGR-1820-F62 radials, each rated at 900 hp for takeoff and 760 hp at 5800 feet.
		The Model 14-N was powered by Wright Cyclone engines of the G-series, which offered a takeoff rating of 1100 hp and a maximum rating of 900 hp between 6000 and 6700 feet.
		This version of the Super Electra was known as Model 14-WG3B, and was powered by two Wright Cyclone GR-1820-G3B radials, rated at 900 hp for takeoff and 840 hp at 8000 feet.
	www.csd.uwo.ca /~pettypi/elevon/baugher_us/a28-01.html (1662 words)

	Richard J. McKee, Wright Cyclone Engines (Site not responding. Last check: 2007-10-08)
		In the early 1940s, Wright “Cyclone” engines were manufactured at a large plant near Cincinnati, Ohio.
		The plant was operated by the Wright Aeronautical Corporation, and I worked there from the fall of 1941 to the spring of 1943.
		I and my alternate were eventually to become part of the Engineering Department at the Wright Aeronautical Corporation, but first we were assigned to various other departments in order to learn how the engines were made.
	www.fridrichdesign.com /maurice/rjm.html (710 words)

	THE 456th FIGHTER INTERCEPTOR SQUADRON (Site not responding. Last check: 2007-10-08)
		Four Wright R-3350-23 Duplex Cyclone eighteen-cylinder air-cooled radial engines each with two General Electric turbosuperchargers, delivering 2200 hp for takeoff and having a war emergency rating of 2300 hp at 25,000 feet.
		Four Wright R-3350-57 Duplex Cyclone eighteen-cylinder air-cooled radial engines each with two General Electric turbosuperchargers, delivering 2200 hp for takeoff and having a war emergency rating of 2300 hp at 25,000 feet.
		Wright engineers found that the exhaust valves on the rear row of cylinders were melting under the heat and pressure, and they designed new engine baffles to direct cooling air onto the affected areas.
	www.456fis.org /B-29.htm (16638 words)

	Historic Floyd Bennett Field in the 1930's
		As the runway at FBF was just 5,000 feet long, they needed to remove a fence and clear a parking lot to add another thousand feet to meet their required takeoff distance.
		D.W. Tomlinson and J.S. Bartles flew a TWA Douglas DC-1, powered by twin Wright Cyclone engines, and established 14 speed records at FBF, demonstrating the increasing efficiency of transport planes and engines with heavy loads.
		Howard Hughes flew a Northrup Gamma, powered by a Wright Cyclone engine, from Miami to FBF in 4:21:32, establishing an intercity speed record.
	www.geocities.com /floyd_bennett_field/1930s.html (2569 words)

	The Martin B-26 Marauder
		The USAAC evaluated the Martin bomber under the designation of "XB-907A", and after a number of changes and refinements a contract for 48 of the aircraft was issued in early 1933.
		Defensive armament consisted of three 7.62 millimeter (0.30 caliber) Browning machine guns, with one firing from the belly of the aircraft, another firing from a dorsal "greenhouse" position, and the third firing from a peculiar nose position that looked like a glassed-in beehive sitting back from the aircraft's jutting chin.
		For simplicity, all the many variants of the B-10 and B-12 are collectively referred to as "B-10s" in the rest of this section.
	www.vectorsite.net /avb26.html (5103 words)

	Vultee V-1A (Site not responding. Last check: 2007-10-08)
		The V-1 was an all metal low-wing cantilever monoplane with a two-spar wing, stressed skin and retractable landing gear.
		Powered by a 700 horsepower Wright Cyclone F-2 radial engine.
		Since only Model V-1 was ever built, the airplane in the attachment photo is in all probability a Model V-1A, which was generally similar to the V-1 but slightly bigger and heavier, with an 850 horsepower Wright Cyclone R-1820 radial engine and trailing edge wing flaps.
	www.1000aircraftphotos.com /Transports/VulteeV1.htm (315 words)

	Brewster 339 in Netherlands East Indies
		Since the Dutch East Indies forces were already equipped with aircraft powered by the Wright Cyclone, the commission concentrated exclusively on aircraft that were powered by this engine.
		However, the Wright Cyclone engine was at that time in short supply, and the Dutch government was forced to cut its Brewster order to only 72 planes.
		The first 24 Brewsters delivered to the Netherlands East Indies were powered by Dutch-supplied 1100-hp Wright R-1820-G105 engines, some of which had been taken from DC-3s operated by commercial airlines and reconditioned at the Wright factory.
	home.att.net /~jbaugher1/f2a_6.html (808 words)

	The Douglas C-47 Dakota
		The DC-1 was a low-wing monoplane, with a capacity of 12 passengers, and twin Wright Cyclone R-1820 air-cooled radial engines driving three-bladed propellers.
		Evaluations of the DB-1 and its competitors, the Boeing "Model 299" and the "Martin 146", were conducted by the USAAC at Wright Field in August 1935.
		Although there was thought of fitting the B-18 with uprated Wright R-2600-3 Cyclone 14 radial engines with 1,195 kW (1,600 HP) each, with this improved variant to be given the new designation of "B-22", but it never happened.
	www.vectorsite.net /avc47.html (7316 words)

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