Murphy SR 3500 Moose

The Murphy SR3500 Moose is a STOL aircraft capable of operating from wheels, floats or skis. Featuring all metal construction, the pre-formed and pre-punched parts suit the first time builder.

The empty weight of the SR 3500 was increased 2% over the SR 2500 Super Rebel to prepare it structurally for more powerful engines, speed increase, and a 17% payload increase. Most of the changes are to the outside of the structure, including doublers added to the wing and horizontal stabiliser roots. A stronger set of rudder and elevator horns and the undercarriage has been strengthened. The structure was stactically loaded to 8400 lb on each wing (5.3G) and the torsional  load tests were equivalent to a 220 mph dive with a 4 G pull-up with full aileron deflection.

When powered by a 360 hp Russian radial, a gearbox allows the engine to run at 2950 rpm while the propeller turns at 1940 rpm.  Typically producing 390 hp, the prop diameter is 98 in.

Murphy Moose
Engine: Lycoming O-540, 250 hp
Power Loading: 14.0 lb./hp
Gross weight: 3500 lb
Empty weight: 1650 - 1800 lb
G-loading (normal): +5.7 -3.8
Power range: 250 - 360 hp
Wing span: 36'
Length: 23'
Fuselage width: 44"
Wing chord: 60"
Tail span: 130"
Tail chord: 33.5"
Airfoil: 4415 (Modified)
Flap area: 22.5 sq. ft
Flap reflex: 5
Flap droop: 40
Aileron area: 25.5 sq. ft
Aileron reflex: 5
Aileron up deflection: 20
Aileron down deflection: 12
Useful Load: 1750-1850 lb
Wing Area: 182 sq.ft
Wing Loading: 19.2 lb./sqft
Rate of Climb: 950 ft/min
Take Off Run: 800 ft
Landing Roll: 600 ft
Stall (no flap) Power off: 64 mph
Stall (full flap) Power off: 58 mph
Cruise (70% Power): 143 mph
Vne: 189 mph
Top Speed: 155 mph
Fuel Burn: 14.1 USG/hr
Fuel Capacity: 60 USG
Endurance: 4.3 hr
Range: 610 statute miles

Murphy Moose
Engine: M-14P, 360 hp
TBO: 1500 hr
Gross weight: 3500 lb
Empty weight: 1650 - 1800 lb
G-loading (normal): +5.7 -3.8
Power range: 250 - 360 hp
Wing span: 36'
Length: 23'
Fuselage width: 44"
Wing chord: 60"
Tail span: 130"
Tail chord: 33.5"
Airfoil: 4415 (Modified)
Flap area: 22.5 sq. ft
Flap reflex: 5
Flap droop: 40
Aileron area: 25.5 sq. ft
Aileron reflex: 5
Aileron up deflection: 20
Aileron down deflection: 12
Power Loading: 9.7 lb./hp
Useful Load: 1800-1600 lb
Wing Area: 182 sq.ft
Wing Loading: 19.2 lb./sqft
Rate of Climb: 1500 ft/min
Take Off Run: 600 ft
Landing Roll: 600 ft
Stall (no flap) Power off: 64 mph
Stall (full flap) Power off: 58 mph
Cruise (70% Power): 150 mph
Vne: 189 mph
Top Speed: 175 mph
Fuel Burn: 15 USG/hr
Fuel Capacity: 80 USG
Endurance: 5.3 hr
Range: 795 statute miles

Turbine Moose
Engine: Pratt & Whitney PT6A-20
Wingspan: 37 ft 6 in
Wing loading: 22.2 lb/sq.ft
Fuel cap: 160 USG
Max Gross Wt: 4000 lb
Empty wt: 2795 lb
Useful load: 1205 lb
Seats: 4
Cabin width: 46 in
Baggage cap: 250 lb
Max ROC: 2000+ fpm
Stall clean: 65 mph / 56 kt IAS
Stall ldg config: 62 mph / 54 kt IAS
Cruise: 180 mph / 157 kt @ 8000 ft @ 60% pwr
Fuel burn at cruise: 34 USG/hr