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Dornier Do-25 & Do-27

The Dornier Do 27 is a German single-engine STOL utility aircraft that was designed and manufactured by Dornier GmbH (later DASA Dornier and Fairchild-Dornier).

It was notable for being the first mass-produced aircraft in Germany following the end of the Second World War.

Variants

Do 25

Precursor aircraft designed to a Spanish requirement and powered by a 110 kW (150 hp) ENMA Tigre G.V engine.

Do 27

Prototype, two built.

Do 27A-1

Military five-seat single-engine STOL utility transport aircraft, 177 built

Do 27A-2

Do 27A-1 with minor modification inside, two built.

Do 27A-3

Do 27A-1 with increased take-off gross weight, 88 built.

Do 27-A4

Variant with wide landing gear and increased Take Off Gross Weight, 65 built.

Do 27B-1

Dual-control version of the A-1, 86 built.

Do 27B-2

Do 27B-2 with minor modification inside, five built.

Do 27B-3

Do 27B-2 with increased take-off gross weight, 16 built.

Do 27B-5

Conversions of 27B-3s to 27A-4 standard.

Do 27H-1

Do 27B-2 powered by a 254 kW (340 hp) Avco Lycoming GSO-480 piston engine with a three-bladed propeller and a larger tail, one built.

Do 27H-2

Variant of the H-1 for the Swiss Air Force with some modifications as applied to the Do 27Q-1

Do 27J-1

Production of the Do 27A-4 for Belgian Army, 12 built.

Do 27K-1

Production of the Do 27A-4 for Portuguese Air Force, 16 built.

Do 27K-2

Similar to K-1 with minor modifications for Portuguese Air Force, 14 built.

Do 27Q-1

Six-seat variant of the A-1 for civil market, 16 built.

Do 27Q-3

Four-seat variant of the Q-1 with a 230 hp Continental O-470K engine, one built.

Do 27Q-4

Improved Q-1 with auxiliary fuel tanks, 34 built.

Do 27Q-5

Improved Q-4 with internal modifications, 12 built.

Do 27Q-5(R)

Restricted category version of the Do 27Q-5.

Do 27Q-6

Variant of the Q-5 with internal changes for Guinea Bissau and Brazil, two built.

Do 27S-1

Floatplane version with enlarged rudder and a ventral fin, one built.

Do 27T

One Do 27Q-4 converted with a Turbomeca Astazou II turboprop engine.

Specifications

Crew

1

Capacity

4 or 5 pax

Length

10.08 m (33 ft 1 in)

Do 27H2 9.9 m (32 ft)

Do 27S 10.08 m (33.1 ft)

Wingspan

12 m (39 ft 4 in)

Height

4.18 m (13 ft 9 in)

Do 27S 4.18 m (13.7 ft)

Wing area

19.4 m2 (209 sq ft)

Aspect ratio

7.42:1

Airfoil

NACA 23018

Empty weight

985 kg (2,172 lb)

Do 27Q3 1,010 kg (2,230 lb)

Do 27Q4 1,050 kg (2,310 lb)

Do 27S 1,275 kg (2,811 lb)

Gross weight: 1,570 kg (3,461 lb)

Do 27Q3 1,700 kg (3,700 lb)

Do 27Q4 1,850 kg (4,080 lb)

Do 27S 1,850 kg (4,080 lb)

Fuel capacity

220 l (58 US gal; 48 imp gal) in two wing tanks, (Do 27Q4 provision for two 82 l (22 US gal; 18 imp gal) external tanks)

Powerplant

1 × Lycoming GO-480-B1A6 6-cylinder air-cooled horizontally-opposed piston engines, 205 kW (275 hp)

Propellers

2-bladed Hartzell metal constant-speed propeller, 2.48 m (8 ft 2 in) diameter

Performance

Maximum speed

250 km/h (160 mph, 130 kn) at 1,000 m (3,300 ft)

Do 27H2 255 km/h (158 mph; 138 kn)

Do 27Q3 227 km/h (141 mph; 123 kn)

Do 27Q4 247 km/h (153 mph; 133 kn)

Do 27S 237 km/h (147 mph; 128 kn)

Cruise speed

205 km/h (127 mph, 111 kn)

Stall speed

58 km/h (36 mph, 31 kn)

Landing speed

65 km/h (40 mph; 35 kn)

Range

870 km (540 mi, 470 nmi)

Service ceiling

5,500 m (18,000 ft)

Time to altitude

1,000 m (3,300 ft) in 2 minute 36 seconds

2,000 m (6,600 ft) in 6 minute 30 seconds

3,000 m (9,800 ft) in 12 minute

4,500 m (14,800 ft) in 26 minute 30 seconds

Take-off run to 15 m (49 ft)

170 m (560 ft)

Landing run from 15 m (49 ft)

160 m (520 ft) in nil wind.

 

 

 

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