Akaflieg Karlsruhe AK-5
The AK-5 is a single-seat club class sailplane designed and built in Germany by members of Akaflieg Karlsruhe.
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 |
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]
The experience gained while building the new winglets for the AK-8 glider will be used to improve the performance of the AK-5. It is planned to build extensions to the existing wings and to attach winglets.
Technical Details
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 Archived 2011-08-17 at the Wayback Machine bei akaflieg-karlsruhe.de
- "AK-5" (in German). 11 June 2015. Retrieved 21 September 2016.
- "Akaflieg Karlsruhe AK-5". All-Aero. Retrieved 21 September 2016.
External links
- Akaflieg Karlsruhe (in German)
- Akaflieg Karlsruhe homepage
Media related to Akaflieg Karlsruhe AK-5 at Wikimedia Commons