Engineering:Arado Ar 69
From HandWiki
| Ar 69 | |
|---|---|
| Role | Trainer |
| National origin | Germany |
| Manufacturer | Arado |
| First flight | 1933 |
| Number built | 3 |
The Arado Ar 69 was a two-seat German beginner's school and sport biplane with an open cockpit, developed in 1933 by Arado Flugzeugwerke.
Design & development
Three prototypes were built, the Ar 69 V1 and Ar 69 V2 were powered by 78 kW (105 hp) Hirth HM 504A engines and the V3 was powered by a BMW Bramo Sh.14a radial engine. Featuring swept wings constructed from wood, and a welded steel tube fuselage, the V1 and V2 represented the planned Ar 69A production aircraft, and the V3 would have evolved into the Ar69B production model.[1] No production aircraft were built, due to the success of the rival Focke-Wulf Fw 44 Stieglitz.
Specifications (Ar 69 V3)
Data from ,[2] Flugzeug-Typenbuch 1941[3]
General characteristics
- Crew: two
- Length: 7.2 m (23 ft 7 in)
- Wingspan: 9 m (29 ft 6 in)
- Height: 2.7 m (8 ft 10 in)
- Wing area: 20.7 m2 (223 sq ft)
- Empty weight: 540 kg (1,190 lb)
- Max takeoff weight: 680 kg (1,499 lb)
- Powerplant: 1 × BMW Bramo Sh.14a 7-cyl. air-cooled radial piston engine, 112 kW (150 hp)
- Propellers: 2-bladed fixed pitch wooden propeller
Performance
- Maximum speed: 184 km/h (114 mph, 99 kn) at sea level
- Cruise speed: 150 km/h (93 mph, 81 kn) at optimum altitude
- Landing Speed: 72 km/h (45 mph; 39 kn)
- Service ceiling: 5,600 m (18,400 ft)
- Time to altitude: 1,000 m (3,280 ft) in 3 minutes 24 seconds
- Wing loading: 32.85 kg/m2 (6.73 lb/sq ft)
- Power/mass: 4.54 kg/hp
References
- ↑ "Arado Ar 69". http://www.wehrmacht-history.com/luftwaffe/trainers/arado-ar-69-trainer.htm.
- ↑ Green, William (2010). Aircraft of the Third Reich (1st ed.). London: Aerospace Publishing Limited. pp. 34. ISBN 978-1-900732-06-2.
- ↑ Schneider, Helmut (1941) (in de). Flugzeug-Typenbuch 1941 (1941 ed.). Leipzig: Herm. Beyer Verlag. p. 14. http://www.aviation-library.org/database/handbook-aircraft-types.pdf. Retrieved 2018-12-20.
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