Amateur aircraft Blomqvist-Nyberg and Pou-du-ciel (Taivaankirppu)
The exposition of the hall of gradan aviation begins with light aircraft created by enthusiasts in the pre-war period.
Blomqvist-Nyberg is the first Finnish aircraft built "in a barn", as well as the second private airplane in the history of Finland. Emil Nyberg (Emil Nyberg) became interested in aviation in 1918, after studying the theory, in 1925 he decided to design and build his own aircraft. He was joined by fellow enthusiast atte Blomqvistin. On occasion, they managed to buy a 220 HP Hispano-Suiza aircraft engine, which served as the starting point for designing the car. Having received a construction permit (in Finland of those years there were such procedures - not only to fly, but also to build aircraft it was possible only with the consent of the authorities), Amateurs built the aircraft in just 3 months.
The design was classic, for the fuselage and wings used fairly thick plywood, the airplane turned out to be strong, but very massive. The device was named after the last names of the designers and in 1926 made several flights of varying degrees of success. The main problem was a strong vibration of the engine, as a result of which the radiator began to leak in one of the flights, the car was seriously damaged during an emergency landing and no longer flew. The efforts of the enthusiasts did not go unnoticed - they received an offer from the air force to join the service as aviation engineers.
Aviette Pou-du-ciel - "flea" was created by the French inventor Henri mignet, who dreamed of flying, but did not have the opportunity to enter flight school, so he took up the construction of his own aircraft. In his workshop on the North-Eastern outskirts of Paris in 1931-1933, he created several aeroplanes that did not perform well in the air. The first successful design was the HM-14, which made its first flight on September 10, 1933. The designer sought to make the aircraft as simple as possible. The aircraft was built according to the "tandem" scheme of wood and fabric, had a front wing with a variable angle of attack with a span of 5.5 meters, and a rear, rigidly fixed four-meter wing. Control was carried out only on two axes: by pitch (changing the angle of attack of the front wing), and by course (steering direction). The propeller was driven by a motorcycle engine. Introducing the plane to the public in 1938 under the name "flea", mignet argued that anyone who can put together a parcel box can build an airplane, and it is no more difficult to operate it than a car. His work found a massive response in the hearts of aviation enthusiasts, enthusiasts in Europe and the United States began to build their own aircraft based on the Minier project. The average cost of materials for construction at that time was about $ 350. At least 500 Fleas were manufactured in France alone. To simplify the task, mignet set up a furniture factory to produce Flea Assembly kits at a cost of $ 500, and the bill of built copies went into the thousands. However, many planes crashed, sometimes killing pilots who failed to bring the aircraft out of the dive. The Royal aviation Institute in the UK and the French aviation Ministry conducted aerodynamic tests of the aircraft, and issued recommendations for changing the profile of the wings and the distance between them, which significantly improved flight quality and flight safety. The idea of mignet lives on to this day - enthusiasts continue to build their own aircraft, taking as a basis the aerodynamic scheme "Fleas", and the furniture factory has turned into an aircraft factory that produces under the brand" Mignet " both ready-made aircraft and kits for self-Assembly. In Finland, there were several such aircraft, called here "Taivaankirppu" (flea).