Righter O-45 - Engine - avia.wikisort.org

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The Righter/Kiekhaefer O-45 was an air-cooled, two-stroke aircraft engine of flat-twin configuration, used extensively for powering target drones in the late 1940s.[1]

O-45
Type	Flat-twin
Manufacturer	Righter Manufacturing Company
Major applications	Globe KD3G

Designed by the Righter Manufacturing Company, the O-45 was also built by the Kiekhaefer Corporation and the Menasco Motors Company.[2]

Variants

O-45-1: 20 horsepower (15 kW) version
O-45-3: 35 horsepower (26 kW) version
O-45-35: Navy version of O-45-3

Applications

Beecraft Wee Bee
Frankfort OQ-16/TD3D
Globe KD3G Snipe
Globe KD4G Quail
OQ-15
Radioplane OQ-6
Radioplane OQ-14
Radioplane OQ-17/KDR
Radioplane TDD
ULM 811 Ultra Cruiser Ultavia

Specifications (O-45-1)

Data from [2]

General characteristics

Type: 2-cylinder air-cooled horizontally opposed direct drive naturally aspirated two-stroke aircraft piston engine
Bore: 3.25 in (82.6 mm)
Stroke: 2.75 in (69.9 mm)
Displacement: 45.5 cu in (745.6 cc)
Dry weight: 34 lb (15.4 kg)

Components

Fuel type: 73 octane gasoline
Cooling system: Air-cooled

Performance

Power output:
(Normal): 20 hp (14.9 kW) at 3,800 rpm at sea level

References

Kiekhaefer O-45-1. New England Air Museum. Accessed 2013-02-12.
Model Designations of USAF Aircraft Engines. Air Force-WPAFB-O-6. USAF Air Materiel Command, 1950. Section I., Page 1.

v t e United States military piston aircraft engine designation system
H (four-bank H-configuration inline)	H-1640 XH-2240 XH-2470 XH-2600 XH-3130 XH-3730 H-4070
IV (inverted-V inline)	IV-1430 IV-2040 IV-2220
L (single-bank inline)	L-330 L-365 L-375 L-390 L-410 L-440 L-510 L-825
O (opposed)	O-15 O-40 O-45 O-90 O-100 O-145 O-150 O-170 O-175 O-180 O-190 O-200 (C) O-200 (F) O-205 O-235 O-290 O-300 O-335 O-360 (C) O-360 (L) O-405 O-425 O-435 O-470 O-480 O-520 O-540 (F) O-540 (L) O-550 O-580 O-805 O-1230
R (radial)	R-250 R-265 R-270 R-370 (LB) R-370 (K) R-420 R-440 R-500 R-540 (W) R-540 (K) R-545 R-550 R-600 R-670 R-680 R-720 R-755 R-760 R-790 R-830 R-915 R-975 DR-980 R-985 R-1044 R-1300 R-1340 R-1454 R-1510 R-1535 R-1640 R-1670 R-1690 R-1750 R-1820 R-1830 R-1860 R-2000 R-2060 R-2160 R-2180 R-2600 R-2800 R-3350 R-4090 R-4360 XR-7755
V (upright-V inline)	V-720 V-1150 V-1237 V-1400 V-1440 V-1460 V-1510 V-1560 V-1570 V-1650 (P) V-1710 V-1950 V-3420
V (inverted-V inline)	V-770 V-1650 (L)
VG (inverted-V inline)	VG-1410
W (three-bank W-configuration inline)	W-2779
See also: X-1800 US military gas turbine aeroengines Piston engine configurations

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