DHC-1
DHC-2
DHC-3
DHC-4
DHC-5
DHC-6
DHC-7
DHC-8

de Havilland DHC-5 Buffalo

DESIGN PHILOSOPHY:    Based on U.S. Army requirements for a turbine powered STOL aircraft with a larger cabin, greater payload weight capability, higher speed and longer ferry range than the Caribou. This was the first DHC design to use spoilers to augment the ailerons for lateral control and to dump lift on landing and during braking in an aborted takeoff. The design and tooling drew heavily on Caribou experience.

Three models have been produced:

DHC-5/CV-7A:   4 produced and delivered to the U. S. Army. Two of these served for a trial period in Vietnam
DHC-5A:  55 produced - Canadian Forces (15), Brazilian Air Force (24), Peruvian Air Force (16)
DHC-5B:  A proposed version using the G.E. T64-P4C engine (never produced)
DHC-5C:  A proposed version for the Indian Air Force using the R.R. Dart 12 engine (never
                   produced)
DHC-5D:  The last production version (S/N 60 and subsequent)

The -5D introduced the concept of higher operating weights and increased payload when operating in a "Transport" role (firm, smooth runways, 2.5g maneuver load factor, restricted flap settings, 10 ft/second limit rate of descent at landing touchdown) in addition to the "Assault" role capabilities of the earlier versions.

"Beta" propellers were introduced on S/N 79 and are standard on subsequent aircraft.

The main differences between the models produced are summarized below:

MODEL

DHC-5

DHC-5A

DHC-5D

ENGINES

T64-10

CT64-820-1*

CT64-820-4

MAX. POWER
(S/L, ISA, Static):

     

Takeoff (5 min)

2,650 SHP

2,825 SHP

3,133 SHP

Military (30 min)

2,435 SHP

2,710 SHP

2,785 SHP

Normal (Max. Cont.)

1,850 SHP

2,345 SHP

2,745 SHP

APU - Manufacturer

Williams

Williams

Solar (Turbomach)

APU -- Starting

Hydraulic

Electric

Electric

* Canadian Forces' engines have been upgraded to the CT64-820-3 standard (improved thermal performance and mechanical modifications)

DHC-5 BUFFALO Models

MAX. WEIGHTS (lb)

MODEL

DHC-5

DHC-5A

DHC-5D

ROLE

ASSAULT

ASSAULT

ASSAULT

TRANSPORT

Takeoff

38,000

41,000

41,000

49,200

Landing

36,500

39,100

39,100

46,500

Zero Fuel

34,000

37,000

37,000

43,500

O.W.E. (Typical)

23,400

24,500

25,052

25,052

Payload

10,600

12,500

11,948

18,000

LANDING:

Surface

Selected, Unprepared

Firm, Smooth

Tire Pressure (psi)

45

45

45

60

Limit Touchdown R of D (ft/sec)

13

13

13

10

MANOEUVER:

Limit Load Factor

3

3

3

2.5

Max Oper. Airspeed  (kCAS)

230

230

230

200

DHC-5 Buffalo Production List ...

PROPULSION

Engines:

2 x GE CT648204 (Turboprop)

Shaft Horsepower:

3,133

Propellers:

Hamilton Standard 63E6025, 3Bladed, Feathering and Reversible

EXTERNAL DIMENSIONS

Wing Span

96 ft 0 in

Length Overall

79 ft 0 in

Height

28 ft 9 in

Tailplane Span

32 ft 0 in

Wheel Track

30 ft 6 in

Wheel Base

27ft 10 in

Wing Area

945.0 sq ft

Aileron Area

39.0 sq ft

Flap Area

280.0 sq ft

Fin Area

92.0 sq ft

Rudder Area

60.0 sq ft

Tailplane Area

151.5 sq ft

Elevator Area

81.5 sq ft

INTERNAL DIMENSIONS

Cabin Length

31ft 5 in

Maximum Width

8ft 9 in

Maximum Height

6ft 10 in

Floor Area

242 sq ft

Volume

1,580 cu ft

Cabin Doors - Left & Right

33 x 66 in

Cabin Doors - Rear

921 x 82 in

[DHC-1] [DHC-2] [DHC-3] [DHC-4] [DHC-5] [DHC-6] [DHC-7] [DHC-8]

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Copyright 2002 XdH Aviation Services Inc.  All rights reserved.