Manual Sommerkamp Ft 767 Dx Engineering

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R-2800 Double WaspA preserved R-2800 engine at theTypeNational originManufacturerFirst run1937First flown May 29, 1940Major applicationsThe Pratt & Whitney R-2800 (US military designation) Double Wasp (civil designation) is an American twin-row, radial with a of 2,800 in³ (46 L), and is part of the long-lived family.The R-2800 saw widespread use in many important American aircraft during and after. During the war years, continued to develop new ideas to upgrade the engine, including for takeoff in cargo and passenger planes and to give emergency power in combat. Contents.Design and development First run in 1937, near the time that the larger (54.9 litres) competing 18-cylinder 's development had been started (May of that year), the 46-litre displacement R-2800 was first-flown by 1940, one year before the Duplex-Cyclone. The Double Wasp was more powerful than the world's only other modern 18-cylinder engine, the of 3,442 in³ (56.4 L).

The Double Wasp was much smaller in displacement than either of the other 18-cylinder designs, and heat dissipation was a greater problem. To enable more efficient cooling, the usual practice of casting or forging the cylinder head cooling fins that had been effective enough for other engine designs was discarded, and instead, much thinner and closer-pitched cooling fins were machined from the solid metal of the head forging.

The fins were all cut at the same time by a gang of milling saws, automatically guided as it fed across the head in such a way that the bottom of the grooves rose and fell to make the roots of the fins follow the contour of the head, with the elaborate process substantially increasing the surface area of the fins. The on the Double Wasp were prominently mounted on the upper surface of the forward gear reduction housing - with one of the pair of magnetos mounted between them on most models - and almost always prominently visible within a cowling, with the conduits for the spark plug wires emerging from the distributors' cases either directly forward or directly behind them, or on the later C-series R-2800s with the two-piece gear reduction housings, on the 'outboard' sides of the distributor casings. Cross section of a Pratt & Whitney R-2800 Double WaspWhen the R-2800 was introduced in 1939, it was capable of producing 2,000 hp (1,500 kW), for a value of 0.71 hp/in³ (32.6 kW/L).

The design of conventional air-cooled radial engines had become so scientific and systematic by then, that the Double Wasp was introduced with a smaller incremental power increase than was typical of earlier engines. Nevertheless, in 1941 the power output of production models increased to 2,100 hp (1,600 kW), and to 2,400 hp (1,800 kW) late in the war. Even more was coaxed from experimental models, with fan-cooled subtypes like the producing 2,800 hp (2,100 kW), but in general the R-2800 was a rather highly developed powerplant right from the beginning. The first prototype F4U Corsair, the earliest aircraft specifically designed to use the Double WaspThe R-2800 powered several types of fighters and medium bombers during the war, including the, with the XF4U-1 first prototype Corsair becoming the first airframe to fly (as originally designed) with the Double Wasp in its XR-2800-4 prototype version on May 29, 1940, and the first single-engine American fighter plane to exceed 400 mph (640 km/h) in level flight during October 1940. The R-2800 also powered the Corsair's naval rival, the, the (which uniquely, for single-engined aircraft, used a General Electric ), the twin-engine and, as well as the first purpose-built twin-engine radar-equipped night fighter, the. When the US entered the war in December 1941, designs advanced rapidly, and long-established engines such as the Wright Cyclone and Double Wasp were re-rated on fuel of much higher ( value) to give considerably more power.

By 1944, versions of the R-2800 powering late-model P-47s (and other aircraft) had a rating (experimental) of 2,800 hp (2,100 kW) on fuel with water injection.After World War II, the engine was used in the, and surplus World War II aircraft powered by the Double Wasp served with other countries well past the Korean War, some being retired as late as the latter part of the 1960s when the aircraft were replaced. Peacetime Engines grow in power with development, but a major war demands the utmost performance from engines fitted to aircraft whose life in front-line service was unlikely to exceed 50 hours flying, over a period of only a month or two. In peacetime however, the call was for reliability over a period of perhaps a dozen years, and the R-2800's reliability commended its use for long-range patrol aircraft and for the, and transports. The last two were twin-engine aircraft of size, passenger capacity, and high wing loading comparable to the and the first.Today, three-quarters of a century after the first prototype Double Wasp, it still flies in restored vintage aircraft displayed at, and sees service worldwide on aircraft such as the water-bomber. In addition, R-2800s continue to power DC-6 cargo and fuel-carrying aircraft in locations such as.

A total of 125,334 R-2800 engines were produced between 1939 and 1960. Variants This is a list of representative R-2800 variants, describing some of the mechanical changes made during development of the Double-Wasp. Power ratings quoted are usually maximum 'military' power that the engine could generate on takeoff and at altitude: 100 Octane fuel was used, unless otherwise noted.The R-2800 was developed and modified into a basic sequence of subtypes, 'A' through 'E' series, each of which indicated major internal and external modifications and improvements, such that the 'E' series engines had very few parts in common with the 'A'.

A preserved 'B Series' R-2800-21 or -59. The A and B series can be most readily identified by their smooth, single piece nose casings. This photo shows the simplified, tubular fitted to some R-2800 subtypes. R-2800-82,000 hp (1,491 kW) at 2,700 rpm at 1,000 ft (305 m); 1,800 (1,342 kW) at 2,700 rpm at 15,500 ft (4,724 m).

First series production 'B' Series engine using a two-stage, two-speed supercharger and with internal engineering changes resulting in increased power and reliability. First production engines delivered to November 11, 1941.

Production = 3,903 (P&W 2,194; Nash 1,709.). R-2800-8W2,250 hp (1,677 kW) with water injection. First production engine using ADI equipment, major production version of -8 and used in some versions of F4U Corsair. Production = 8,668 (P&W 5,574; Nash 3,094.). R-2800-10 and R-2800-10W2,000 hp (1,491 kW) at 2,700 rpm at 1,000 ft (305 m); 1,800 (1,342 kW) at 2,700 rpm at 15,500 ft (4,724 m); up to 2,250 hp (1,677 kW) WEP with water injection.

Similar to -8 series apart from downdraft PT-13G2-10 and PT-13G6-10 (-10W) carburetor. Used in, and Production = 4,621 -10 (P&W 2,931; Nash 1,690) and 12,940 -10W (P&W 3,040; Nash 9,900); Total = 17,561. R-2800-212,000 hp (1,491 kW) at 2,700 rpm at 2,500 ft (762 m); 2,000 hp (1,491 kW) at 2,700 rpm at 25,000 ft (7,620 m). First production variant fed by a C-1. Designed for use in the. Production = 5,720 (P&W 1,049; Ford 4,671.). R-2800-25 - 2,000 hp (1,490 kW) — for.

R-2800-27 - 2,000 hp (1,491 kW). R-2800-31 - 2,000 hp (1,491 kW). R-2800-41 - 2,000 hp (1,491 kW). R-2800-43 - 2,000 hp (1,491 kW). R-2800-51 - 2,000 hp (1,491 kW). R-2800-592,000 hp (1,491 kW) at 2,700 rpm at 2,500 ft (762 m); 2,000 hp (1,491 kW) at 2,500 rpm at 25,000 ft (7,620 m); 2,300 hp (1,700 kW) WEP with water injection. Main production variant used in P-47 series, fed by an improved C-23 turbosupercharger.

Differed from -21 in being fitted with A.D.I and a General Electric ignition system with a simplified, tubular ignition harness developed by the Scinitilla company in partnership with Bendix. Used in P-47C and D, XP-47L. Production = 11,391 (P&W 592; Ford 10,799). R-2800-59W - 2,500 hp (1,890 kW). R-2800-65 - 2,000 hp (1,491 kW). R-2800-65W - 2,250 hp (1,677 kW). R-2800-71 - 2,000 hp (1,491 kW).

R-2800-75 - 2,200 hp (1,640 kW). R-2800-79 - 2,000 hp (1,491 kW)'C' Series. A 'C Series' R-2800, with the two section nose casing incorporating torque-monitoring equipment and a Spark Advance unit, with the 'outboard' sparkplug wiring conduit location for each of the twin enclosed distributors. R-2800-18W2,100 hp (1,566 kW) at 2,800 rpm at 1,000 ft (305 m); 1,800 hp (1,342 kW) at 2,800 rpm at 25,500 ft (7,772 m). First series production variant of the 'C' Series, which was a complete redesign of the R-2800. Some of the main changes were, rather than cylinders, allowing an increased compression ratio (from 6.65:1 to 6.75:1), a redesigned crankshaft, a single piece, rather than split crankcase center section, and a two section nose casing, incorporating hydraulically operated equipment and an automatic, vacuum operated unit.

The supercharger used for the second stage. Updraft Bendix-Stromberg PT-13G2-10 carburetor.Engines on display.

There is an R-2800-39 on display at the, Windsor Locks, CT. An R-2800 used on is on public display at.

An R-2800 Double Wasp is on display at the Aerospace Discovery at the. An R-2800 Double Wasp manufactured by Ford Motor Company is on display at the. An R-2800-8W Double Wasp is on display at the at,. An R-2800 Double Wasp moving cut-away is on display at the at,. An R-2800 Double Wasp is on display at (The National Museum of WWII Aviation) located in (Colorado Springs, Colorado).

An R-2800-34 Double Wasp is on public at the.Specifications (R-2800-54). Retrieved August 1, 2013. McCutcheon, Kimble. Retrieved August 1, 2013. ^ The Aviation History Online Museum.

Retrieved: 23 February 2009. Connecticut Corsair LLC. Retrieved April 23, 2015. From numbered callouts for photo: '3. Distributor Housing Cover, 16. Distributor Housing'.

Archived from on July 13, 2013. Retrieved August 9, 2013.

Archived from on July 13, 2013. Retrieved August 9, 2013. Retrieved: 25 October 2008. White 2001 225-292. White 2001, p. 218. White 2001, p.

100. White 2001, p. 249.

White 2001, p. 250. ^ White 2001, pp. 251-252.

Bodie 1994, p. 387. White 2001, pp. 257, 269, 387. White 2001, p. 260. Bodie 1994, p.

Ham Radio At Dx Eng

392. ^ White 2001, p. 280. USN history 1986, p. 8. White 2001, pp. 163-165, 167-169.

White 2001, pp. 144-145, 148-152, 158-160.

Manual sommerkamp ft 767 dx engineering system

White 2001, pp. 432, 437. White 2001, p. 257.

'Pratt & Whitney R-2800-39 Double Wasp'. Yankee Air Museum archives and floor display. Retrieved: 30 October 2008Bibliography. Bodie, Warren M. Republic's P-47 Thunderbolt: From Seversky to Victory.

Hayesville, North Carolina: Widewing Publications, 1994. Gunston, Bill. World Encyclopedia of Aero Engines: From the Pioneers to the Present Day. 5th edition, Stroud, UK: Sutton, 2006. Bridgman, Leonard, ed. Jane's All The World's Aircraft 1951–1952.

London: Samson Low, Marston & Company, Ltd 1951. White, Graham. Allied Aircraft Piston Engines of World War II: History and Development of Frontline Aircraft Piston Engines Produced by Great Britain and the United States During World War II. Warrendale, Pennsylvania: SAE International, 1995. White, Graham.