Valmet Tuuli
The Valmet Tuuli was a trainer aircraft of the Finnish Air Force. They were developed by the Finnish national aerospace company Valtion lentokonetehdas (VL). The latest version, Tuuli III was a completely new development and therefore very different from the previous versions.
Development
The construction work under the leadership of Martti Vainio began in February 1941. The plane was a two-seat trainer aircraft in low-wing design. The Air Force announced in August 1942 commissioned a prototype that build Tuuli I,. The design and construction lasted until the spring of 1944. At this time, however, the priority was Valtion Lentokonetehdas in the repair of aircraft from the front. The Tuuli I was therefore never completed.
1944 VL was part of the company Valtion metallitehtaita ( Valmet ). the prototype of the Tuuli thus became the first aircraft of Valmet. The company wanted to arms production which had to provide at this time reparations to the Soviet Union to turn into a productive and profitable enterprise branch. For example, the factories for the artillery in paper mills have been converted. The heads of the aircraft manufacturing became professors at the Technical University of Helsinki and directors of the Technical Research Centre VTT ( Valtion Teknillinen Tutkimuskeskus ). The aircraft in Finland came slowly to a halt and the quality of the built aircraft was still worse.
The construction of the prototype Tuuli II began in September 1945 and was led by Torolf Eklund. In the autumn of 1948, the prototype was ready. Thereafter, however, the development came to a standstill for several years. The Air Force funded the prototype and gave the event that this would correspond to their expectations, a series order in view. The requirements had changed and they called for an aircraft with side by side seats. The first flight of Tuuli II took place on 26 September 1951. Due to the low surface loading curve flight characteristics were poor - this represented the view of the military is a serious problem The aircraft was destroyed on October 26, 1951 in an accident after the stick broke off because of a lack of riveting.
A third prototype, the Tuuli III was constructed from 1957 to 1959 due to re- tendering of the Air Force for a trainer aircraft. There, however, decided against Tuuli III and the Swedish Saab 91 Safir, which was much cheaper. The Tuuli III was to the development of Valmet L -70 vinca in the 1970s for the time being the last developed in Finland military aircraft.