FergWorld: Airplanes : Hughes 500 (369/OH-6A)
Resources for the Hughes 500 / OH-6A, including checklist and technical data, will be found here over time.
| Manufacturer | Hughes (McDonnell Douglas)
| | Role | ASW, scout, antitank, multimission
|
| Blades |
Main rotor: 4
Tail rotor: 2 |
| Rotor diameter | 26 ft, 4 in (8 m)
| | Length |
Length (rotors turning): 30.8 ft.
Length (fuselage): 24.9 ft. |
| Height | 8.5 ft. |
| Width | 6.2 ft.
| | Rotor Diameter |
Main Rotor Diameter: 26.2 ft. |
| Weight |
Maximum Gross: 2,400 lbs.
Empty: 1,400 lbs.
| | Engine | Allison 250-C18
| | Fuel |
Internal: 352 lbs.
Internal Aux Tank: 125 lbs.
| | Speed |
Maximum (level): 130 knots
Cruise: 119 knots (530)
|
| Range |
Normal Load (est.): 260 nm
| | Ceiling |
Service: 15,000 ft.
Hover (out of ground effect): 6,000 ft.
Hover (in ground effect): 8,500 ft.
|
Allison 250-C18/T63-700 Specification
Power Output.....................................317 Bhp (C18) 420 Bhp (C20)
RPM...................................................52,000 (Compressor) 35,000 Power Turbine, O/P Shaft 6,000 rpm
Compressor.......................................6 Stage Axial with Bleed Valve + Centrifugal Impeller
Combustion Chamber.........................Single Can with Single Burner, Rear Mounted Side Entry
Compressor Turbine...........................2 Stage Axial
Power Turbine....................................2 Stage Axial with 5.8:1 reduction gear
Layout...............................................Twin Spool Turboshaft with combined accessory and output gearbox
Starting..............................................Starter Generator
Ignition..............................................High energy ignitor
Fuel System......................................Separate Fuel Pump, Gas generator Governor and Power Turbine Governor
Oil System.........................................Return System with Pressure and Scavenge pumps, External Oil Cooler and Tank.
Oil Spec.............................................MIL-L-7808, Aeroshell 390
Weight...............................................158 Lbs
Dimensions.........................................L 41in, W 21in, H 24in
Applications.......................................Helicopters: Jet Ranger, OH58, AS355, BO 105, A109 Also Turbo-prop A/C
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