The Vihuri (Squall) was built for the Finish Air Force by Valmet OY at Tampere. The prototype flew for the first time on 6 February 1951, and the first production machine of an initial batch of thirty was flown on 3 August 1953.
Engine: 820 hp Bristol Mercury 8
Wingspan: 33 ft 1 in
Wing area: 202.9 sq.ft
Length: 28 ft 9 in
Height: 12 ft 8 in
Max weight: 6345 lb
Max speed: 268 mph at 12.140 ft
Econ cruise: 203 mph at 3280 ft
ROC: 2263 fpm
Service ceiling: 29,100 ft
Seats: 2
The Valmet PIK-23 Towmaster is a Finnish two-seat glider towing/primary trainer aircraft built entirely out of composite materials in the early 1980s.
The Finnish technology students aviation club suggested in the 1970s, that a new aircraft should be developed for glider towing. The work focused on the improvement of a previous design, the PIK-19 Suhinu (Suhinu is a contraction of Super Hino = Super Tow-plane). Later on, the Helsinki University of Technology and Valmet Oy joined the project and the design process started from scratch. The goal was to develop a target/glider tower, which also could be used for basic training. It was given the name “PIK-23 Towmaster”.
Only two aircraft were manufactured, one at Valmet and one at the Helsinki University of Technology. The first aircraft, OH-TOW, made its maiden flight on March 22, 1982, flown by Mikko Järvi. The second aircraft, OH-TUG, flew the following year. OH-TUG was written of in 1991.
Valmet marketed the aircraft intensively, but no orders followed. It was also investigated if the aircraft could be sold in parts, for self-assembly, in order to lower the price. In its intended role as a glider tower, the PIK-23 has been quite successful.
PIK-23
Engine: 1 × Avco Lycoming O-360-A4M, 130 kW (180 hp)
Propeller: 2-bladed Hoffmann fixed pitch
Wingspan: 10.00 m (32 ft 10 in)
Wing area: 14.00 m2 (150.7 sq ft)
Aspect ratio: 7.14:1
Airfoil: NACA 632415 (modified)
Length: 7.19 m (23 ft 7 in)
Height: 2.90 m (9 ft 6 in)
Empty weight: 590 kg (1,301 lb)
Max takeoff weight: 870 kg (1,918 lb)
Fuel capacity: 200 L (44 imp gal; 53 US gal)
Maximum speed: 250 km/h (160 mph, 130 kn) at sea level
Cruise speed: 220 km/h (140 mph, 120 kn) at 3,660 m (12,010 ft) (65% power)
Stall speed: 78 km/h (48 mph, 42 kn) (flaps down)
Never exceed speed: 281 km/h (175 mph, 152 kn)
Range: 1,250 km (780 mi, 670 nmi) at 3,660 m (12,010 ft) (65% power)
Endurance: 6 hr 30 min (55% power)
Rate of climb: 5.80 m/s (1,142 ft/min)
Takeoff run to 15 m (50 ft): 320 m (1,050 ft)
Crew: 2
The L.90TP was derived from the earlier L.70 through an intermediate turboprop design known as the L.80TP in 1985.
Own designed Leko-70 Vinka two-seat piston-engined trainer evolved by new design group created September 1970. The L.70 first flew on July 1, 1975.
Valmet L.70 Militrainer Article
30 Valmet Vinka were delivered to the Finish air force in the late 1970s, and entered service as the Vinka in October 1980. Production of the L.70 piston-engined side-by-side primary/basic trainer for the Finnish Air Force ended in 1982.
L-70 Miltrainer
Engine: 1 x Lycoming AEIO-360, 150 kW
Span: 9.8 m
Length: 7.5 m
Wing area: 14.5 sq.m
Empty wt: 765 kg
MTOW: 1250 kg
Warload: 300 kg
Max speed: 235 kph
Initial ROC: 340 m / min
Ceiling: 4800 m
T/O run: 230 m
Ldg run: 175 m
Fuel internal: 170 lt
Range: 970 km
Two-seat trainer designed by engineer Arvo Ylinen. The Finnish Air Force had 22 aircrafts in use in 1937 – 1963, in addition the civilian aircraft OH-ILM was added as VI-40 in 1953.
Valmet Oy Kuoreveden Tehdas
Valtion Metallitehtaat Lentokonetehdas
Valmet Oy Tampere
Valmet Aviation Ind
Finavitec OY
Finland
Valmet Oy was shortened title from 1958 of state-owned group (Valtion Metallitehtaat Lentokonetehdas) consisting of several metalworking factories. Kuoreveden Tehdas (Kuorevesi Works) was formerly part of factory group Valmet Oy Tampere, from which it separated in 1974, and became the largest aircraft factory in Finland. Foreign aircraft produced under license included Potez (Air Fouga) Magister jet trainers and 12 Saab Draken fighters. Own designed Leko-70 Vinka two-seat piston-engined trainer evolved by new design group created September 1970, followed in 1985 by the two/four-seat L-80 TP turboprop version. Also flew prototypes of the PIK-23 Towmaster. Valmet also assembled 46 of the 50 BAe Hawk jet trainers for Finnish Air Force. Other activities included overhaul and repair of military and civil aircraft and piston aero engines. The other aviation member of group was Valmet Oy Linnavuoren Tehdas, at Siuro, concerned mainly with overhaul and repair of jet aero engines.
Valmet Aviation Ind followed on from Valmet OY before the latest change to Finavitec OY. Manufactured the L-90TP RediGO turboprop trainer before being sold to Aermacchi of Italy in 1996. Began assembly of 57 F-18C Hornet fighters for the Finnish Air Force from kits, and manufactured parts, plus their engines.
A Back Yard Flyer UL prototype was built by Valley Engineering in 2005 as a STOL ultralight. Featuring a constant-chord wing with trailing full-length “flaperons.” Demonstrated take-off in about three seconds over 70 feet. With simple disassembly for trailering it was priced around.$25,000.
Planned production was for a two place, open cockpit low wing monoplane, side-by-side SP version for the FAA Part 103 Sport Pliot market, includes ballistic parachute system.
Engine: Valley-VW
Cruise speed: 90 mph
Stall: 30 mph
Seats: 1
Gene & Larry Smith
Rolla MO.
USA
Built the Back Yard Flyer UL in 2005.
Taifun 12E as two-seat lightplane was developed into Taifun 11S four-seater of 1988.
Valentin Flugzeugbau Gmbh developed Taifun 12E as two-seat lightplane (first flown 1985), it has a two bladed non retracting Muhlbauer variable pitch feathering propeller.
Further developed into Taifun 11S four-seater of 1988.
