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DESIGN PHILOSOPHY:
Designed to be operated as a "half-ton truck" in Canada's northern bush areas, the Beaver is an extremely
versatile aircraft and has been used in a wide variety of roles, both civil and military. It can be converted for use on floats, amphibious gear, skis and wheel/skis, as well as on standard wheels.
Several new concepts were pioneered with the Beaver:
- STOL (Short Take Off & Landing) the idea of clearing a 50 ft obstruction in approximately 1,000 ft horizontally for both takeoff and landing
All-metal construction (new for "bush" aircraft) Full-span flaps (Single slotted flaps; ailerons "droop" as flaps are extended) "Rubber-in-compression" shock absorbers for the main landing gear
The last 60 aircraft were built as Turbo Beavers, fitted initially with PT6A-6 engines (500 SHP) and later retrofitted with PT6A-20's when production of the -6 ceased. The Turbo Beaver has a 28 inch "plug"
in the fuselage ahead of the wing, thereby permitting 7 seats in the cabin instead of 5. |
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BEAVER |
TURBO BEAVER |
Engine: |
P&W R985 Wasp Junior SB3 (Reciprocating) |
P&W PT6A-20 (Turboprop) |
Brake Horsepower: |
450 |
550 |
Propeller: |
Hamilton Standard, 2-Bladed, Constant Speed |
Hartzell, 3-Bladed, Full feathering, Reversing |
WEIGHTS |
Basic Operational |
3,000 lb |
2,760 lb |
Maximum Takeoff |
5,100 lb |
5,370 lb |
Maximum Landing |
5,100 lb |
5,100 lb |
Wing Loading |
20.4 lb/sq ft |
21.5 lb/sq ft |
Power Loading |
11.3 lb/bhp |
8.3 lb/shp |
PERFORMANCE (at Max Takeoff Weight) |
Maximum Speed at Sea Level |
140 mph |
170 mph |
Maximum Permissible Dive Speed |
180 mph |
180 mph |
Maximum Cruise at Sea Level |
135 mph |
157 mph |
Economical Cruise at 5,000 ft |
130 mph |
151 mph |
Stalling Speed |
60 mph |
60 mph |
Rate-of-Climb at Sea Level |
1,020 ft/min |
1,220 ft/min |
Service Ceiling |
18,000 ft |
23,900 ft |
Takeoff Run |
560 ft |
500 ft |
Takeoff Distance to 50 ft |
1,015 ft |
1,030 ft |
Landing Run |
500 ft |
360 ft |
Landing Distance from 50 ft |
1,000 ft |
870ft |
Payload/Range (Normal Tanks, 45 Minutes Reserve): |
100 miles / 1,675 lb |
200 miles / 1,850 lb |
300 miles / 1,500 lb |
400miles / 1,545 lb |
470 miles / 1,350 lb |
600miles / 1,210 lb |
EXTERNAL DIMENSIONS |
BEAVER |
TURBO BEAVER |
Wing Span |
48 ft 0 in |
48 ft 0 in |
Length Overall |
30 ft 4 in |
35 ft 3 in |
Height over Tall |
9 ft 0 in |
11 ft 0 in |
Tailplane Span |
15 ft 10 in |
15 ft 10 in |
Wheel Track |
10 ft 2 in |
10 ft 2 in |
Wheel Base |
22 ft 9 in |
22 ft 9 in |
Wing Area |
250.0 sq ft |
250.0 sq ft |
Aileron Area (Total) |
24.6 sq ft |
24.6 sq ft |
Flap Area |
20.0 sq ft |
20.0 sq ft |
Fin Area |
16.0 sq ft |
21.5 sq ft |
Rudder Area (Incl. tab) |
9.4 sq ft |
11.0 sq ft |
Tailplane Area |
25.4 sq ft |
25.4 sq ft |
Elevator Area (Incl. tab) |
23.0 sq ft |
23.0 sq ft |
INTERNAL DIMENSIONS |
Cabin Length |
9 ft 0 in |
11 ft 6 in |
Maximum Width |
4 ft 0 in |
4 ft 0 in |
Maximum Height |
4 ft 3 in |
4 ft 3 in |
Floor Area |
31.5 sq ft |
40.5 sq ft |
Volume |
134 cu ft |
174 cu ft |
Cabin Doors (L & R) |
39 x 40 in |
39 x 40 in |
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