Engineering:PIK-19
| PIK-19 Muhinu | |
|---|---|
| Role | Glider tug |
| National origin | Finland |
| Manufacturer | Helsinki University of Technology |
| First flight | 26 March 1972 |
| Number built | 1 |
The PIK-19 Muhinu was a light aircraft developed in Finland in the early 1970s for use as a glider tug and flight trainer.[1] It was a low-wing cantilever monoplane of conventional configuration, with an enclosed cockpit and fixed, tricycle undercarriage.[1] Its construction was of composite materials throughout,[2] a novel approach at the time. When the PIK-19 flew for the first time in 1972, it was only the fourth aircraft in the world made of these materials.[3]
The project was undertaken as a joint venture by the Finnish government and the Helsinki University of Technology.[3] Its "PIK" designation belongs to a sequence of designations applied to the aircraft designed and built by the university's gliding club, Polyteknikkojen Ilmailukerho, although this was not a project by the club.[3] Design work commenced in 1969 under the leadership of Jukka Tervamäki, Ilkka Rantasalo and Pekka Tammi and the prototype flew on 26 March 1972.[1] Plans for production in series were never realised,[4] and the single prototype was the only example ever built.[1] Over the next 21 years, it accumulated 5217 hours of flying time and some 40,000 glider tows.[3] It was destroyed in a crash in June 1994 when the engine failed at low altitude.[1]
Specifications
Data from Jane's All the World's Aircraft 1974-75[5]
General characteristics
- Crew: Two
- Length: 6.90 m (22 ft 8 in)
- Wingspan: 10.00 m (32 ft 10 in)
- Height: 2.60 m (8 ft 6 in)
- Wing area: 14.00 m2 (150.7 sq ft)
- Aspect ratio: 7.14
- Airfoil: NACA 632415
- Empty weight: 560 kg (1,235 lb) equipped
- Max takeoff weight: 840 kg (1,852 lb)
- Fuel capacity: 150 L (33 Imp gal; 40 ?US gal)
- Powerplant: 1 × Lycoming O-320-B2BC flat four, 120 kW (160 hp)
- Propellers: 2-bladed McCauley1A-175/GM-8241 for towing and 1C-172/MGM-7657 for other tasks, Both fixed pitch, metal blades.
Performance
- Maximum speed: 240 km/h (150 mph, 130 kn)
- Cruise speed: 220 km/h (140 mph, 120 kn) maximum, 75% power
- Stall speed: 83 km/h (52 mph, 45 kn) flaps down
- Never exceed speed: 310 km/h (190 mph, 170 kn)
- Range: 950 km (590 mi, 510 nmi) maximum fuel, no reserves, 65% power
- Rate of climb: 7.00 m/s (1,378 ft/min)
- Time to altitude: maximum
- Wing loading: 60.0 kg/m2 (12.3 lb/sq ft)
- Take-off to 15 m (50 ft): 240 m (787 ft)
- Landing from 15 m (50 ft): 220 m (722 ft
Notes
References
- "Finnish Newcomer". Flight International: 1900. 8 December 1979. http://www.flightglobal.com/pdfarchive/view/1979/1979%20-%204468.html?search=muhinu. Retrieved 2009-01-13.
- "PIK-sarjan lentokoneet". Polyteknikkojen Ilmailukerho website. http://pik.tky.fi/joomla/index.php?option=com_content&task=view&id=43&Itemid=108.
- Taylor, John W R (1974). Jane's All the World's Aircraft 1974-75. London: Jane's Yearbooks. ISBN 0 354 00502 2.
- Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions.
- Tervamäki, Jukka. "Projects in Various Organizations". The Home Page of Jukka Tervamaki. http://www.icon.fi/~jtki/airplane.html.
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