https://www.facebook.com/archaeopteryx.ch/videos/1078731168852393/
The Ruppert Archaeopteryx (English: ancient wing) is a Swiss high-wing, pod-and-boom, single-seat, microliftglider that was designed by Roger Ruppert and is produced by Ruppert Composite GmbH
Design and development
The Archaeopteryx was conceived as a foot-launchable microlift sailplane, with the design goals of a light empty weight, low stall speed with gentle stall characteristics, good maneuverability and good high speed performance. A further goal was a sailplane that could be foot-launched in zero wind conditions.[3]
The Archaeopteryx design started in 1998 at the Zurich University of Applied Sciences (ZHW) as a research project. The first flight of the initial prototype was in September 2001. Based on initial lessons the prototype was modified and reflown in May 2002. Further flight tests and modifications were carried out, with the prototype re-flying in its new form in March 2003. The production prototype design was started in 2006 and completed in 2009. The first series production started in the summer of 2009 and production deliveries to customers commenced in May 2010. By the summer of 2012 ten aircraft had been delivered to customers in Australia, Argentina, Germany, France, Austria and Switzerland.[1][4][6]
The company is developing a prototype equipped with two electric motors to provide self-launch capability.[7]
The controls are conventional, with a stick for ailerons and elevator and rudder pedals. The aircraft uses flaps for glidepath control, which function as airbrakes when set to 45-70 degrees. A ballistic parachute with an area of 62 m2 (670 sq ft) is also fitted. The aircraft can be rigged for flight by one person in 15 minutes. It has been launched by foot, aero-tow, bungee launch, auto-tow and winch-launch and has been landed on its wheel and foot-landed as well.[8][9][10][11]
The aircraft can accommodate pilots from 165 to 195 cm (65 to 77 in) in height and 55 to 100 kg (121 to 220 lb).[12]
Electric propulsion was introduced in mid-2014 and allows self-launching. A handful have been sold (and some were retrofitted to earlier sold models). Takeoff roll distance is 50 m and rate of climb when fully charged is 2.5 m/s. It can run at full power for 11 min on one charge. The electrical motor uses 10.5kW at 3800 rpm, and propeller delivers 37 daN when flying at 75 km/h. Storage is a 14s1p Lithium polymer battery (Kokam) with 40Ah capacity, delivering 2.07 kWh, maximum 58.8V and maximum continuous current 200A.[13]
Variants[edit]
- Archaeopteryx Standard
- Basic design without cockpit fairing[14]
- Archaeopteryx Performance
- Basic design, with cockpit fairing. No longer in production.[14][15]
- Archaeopteryx Race
- Basic design, with cockpit fairing and windshield[14]
- Elec'teryx
- Race version with electrical propulsion[16]
Specifications (Archaeopteryx)[edit]
General characteristics
- Crew: one
- Length: 5.7 m (18 ft 8 in)
- Wingspan: 13.6 m (44 ft 7 in)
- Height: 2.9 m (9 ft 6 in)
- Wing area: 12.8 m2 (138 sq ft)
- Aspect ratio: 12.8
- Empty weight: 54 kg (119 lb)
- Gross weight: 164 kg (362 lb)
Performance
- Maximum speed: 130 km/h (81 mph; 70 kn)
- Cruise speed: 57.5 km/h (36 mph; 31 kn)
- Stall speed: 30 km/h (19 mph; 16 kn)
- Never exceed speed: 130 km/h (81 mph; 70 kn)
- g limits: +4.0 / -2.0 at 130kmh and +5.1 / -3.1 at 100kmh
- Maximum glide ratio: 28:1
- Rate of sink: 0.5 m/s (98 ft/min)
- Lift-to-drag: 28:1
- Wing loading: 12.8 kg/m2 (2.6 lb/sq ft)
Avionics
| Unit cost | 83,800 standard ( 73.044 €) ; 92,400 Race;( 81316€) 108,500 electric Swiss Francs ( 95485 €)(2017 base price) |
https://www.ruppert-composite.ch/home
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