Engineering:Akaflieg Karlsruhe AK-5
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Short description: Single-seat German glider, 1990
| Akaflieg Karlsruhe AK-5 | |
|---|---|
| |
| AK-5 in Neresheim | |
| Role | Club class sailplane |
| National origin | Germany |
| Manufacturer | Akaflieg Karlsruhe |
| First flight | June 1990[1] |
| Number built | 1 |
| Developed into | Akaflieg Karlsruhe AK-5b |
The AK-5 is a single-seat club class sailplane designed and built in Germany by members of Akaflieg Karlsruhe.
Design and development
The forward fuselage of the glider was taken from the Glasflügel 604 and the wings were built to the design of the Streifeneder-Hansen Falcon glider, an experimental prototype designed and built by Hansjörg Streifeneder. The cockpit interior was newly designed including a self-designed and built flight director / variometer system and parallelogram control input system similar to Glasflügel practice.[2]
Specifications
Data from [3]
General characteristics
- Crew: 1
- Length: 6.8 m (22 ft 4 in)
- Wingspan: 15 m (49 ft 3 in)
- Wing area: 10.66 m2 (114.7 sq ft)
- Aspect ratio: 21.11
- Airfoil: HQ-21/17.5
- Empty weight: 278 kg (613 lb)
- Gross weight: 485 kg (1,069 lb)
Performance
- Never exceed speed: 270 km/h (170 mph, 150 kn)
- Maximum glide ratio: 39:1 at 105 km/h (65 mph; 57 kn)
- Rate of sink: 0.580 m/s (114.2 ft/min) at 85 km/h (53 mph; 46 kn)
- Wing loading: 45 kg/m2 (9.2 lb/sq ft)
Avionics
- self-designed flight director / variometer
References
- ↑ AK-5 Erstflug bei akaflieg-karlsruhe.de
- ↑ "AK-5" (in German). 11 June 2015. https://akaflieg-karlsruhe.de/project/ak-5/. Retrieved 21 September 2016.
- ↑ "Akaflieg Karlsruhe AK-5". http://www.all-aero.com/index.php/component/content/article/44-planes-a-b-c/742-akaflieg-karlsruhe-ak-5. Retrieved 21 September 2016.
External links
- Akaflieg Karlsruhe (in German)
- Akaflieg Karlsruhe homepage
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