avia.wikisort.org - Engine
The Lycoming R-680 is a nine-cylinder air-cooled radial engine, the first aero engine produced by Lycoming. The engine was produced in two types, the E and B series; both are essentially the same. The B4E was available in a trainer version with a front exhaust collector "ring" for use without cylinder air baffles. R-680 received Approved Type Certificate No. 42 on 4 Feb 1930.
| R-680 | |
|---|---|
 | |
| Lycoming R-680 | |
| Type | Piston aero-engine |
| National origin | United States |
| Manufacturer | Lycoming Engines |
| First run | 1929 |
| Major applications | Beechcraft AT-10 Wichita Stinson L-1 Vigilant Curtiss-Wright AT-9 Stinson Airliner |
| Produced | 1930-1945 out of production |
| Number built | over 26.000 |
Variants
- R-680B4E
- Rated at 225 hp (168 kW) at 2100 rpm.[1]
- R-680BA
- Rated at 240 hp (180 kW)
- R-680E3A
- Rated at 285 hp (213 kW) at 2200 rpm.[1]
- R-680-6
- Rated at 245 hp (183 kW)
- R-680-13
- Rated at 300 hp (220 kW) at 2200 rpm.[1]
Applications
- Beech AT-10 Wichita
- Boeing-Stearman PT-13
- Cessna AT-8/AT-17
- Curtiss-Wright AT-9
- Fleetwings BQ-2
- Spartan NP-1
- Stinson Airliner
- Stinson Reliant
- Stinson Vigilant
- Waco S Series
Specifications (R-680-E3A)
Data from Jane's Fighting Aircraft of World War II.[1]
General characteristics
- Type: Nine cylinder air-cooled radial
- Bore: 4 5⁄8 in (117 mm)
- Stroke: 4 1⁄2 in (114 mm)
- Displacement: 680 in³ (11.15 litres)
- Length: 37.5 in (953.1 mm)
- Diameter: 43.5 in (1104 mm)
- Dry weight: 515.46 lb (233.9 kg)
Components
- Valvetrain: One inlet and one exhaust valve per cylinder at 30 degrees.
- Fuel system: single-barrel carburetor
- Fuel type: 87 octane rating gasoline
- Oil system: Full pressure type
- Cooling system: Air-cooled
Performance
- Power output: 330 hp (246 kW) at 2,300 rpm at sea level
- Compression ratio: 7:1
- Power-to-weight ratio: 0.64 hp/lb (1.05 kW/kg)
See also
Comparable engines
- Bristol Jupiter
- Continental R-670
- Jacobs R-755
- Pratt & Whitney R-985
- Wright R-790 Whirlwind
Related lists
References
Wikimedia Commons has media related to Lycoming R-680.
Notes
- Bridgman 1988
Bibliography
- Bridgman, Leonard (1988). Jane's Fighting Aircraft of World War II. New York: Crescent Books. ISBN 0-517-67964-7.
На других языках
[de] Lycoming R-680
Der Lycoming R-680 ist ein Neunzylinder-Sternmotor des US-amerikanischen Herstellers Lycoming, der zum Antrieb zahlreicher Leichtflugzeuge in den 1930er und 1940er Jahren eingesetzt wurde.- [en] Lycoming R-680
[it] Lycoming R-680
Il Lycoming R-680 era un motore aeronautico radiale 9 cilindri a singola stella e raffreddato ad aria prodotto dall'azienda statunitense Lycoming Foundry and Machine Company.Текст в блоке "Читать" взят с сайта "Википедия" и доступен по лицензии Creative Commons Attribution-ShareAlike; в отдельных случаях могут действовать дополнительные условия.
Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
2019-2025
WikiSort.org - проект по пересортировке и дополнению контента Википедии
WikiSort.org - проект по пересортировке и дополнению контента Википедии