The floats were retracted during flight. 1916-17
120 hp Daimler prototype
160 hp Benz Production
Ursinus Seaplane
Aircraft
Ursinus Glider
In 1909 Engineer Oscar Ursinus of Frankfurt formed a team to promote the application of motorless flight. This team, mostly technical high school teenagers, studied early Otto Lilienthal theory and his bold experiments. After fabricating a glider of their own design they transported it to Rhön for trials. Oscar Ursinus became the first person to successfully fly a glider from the cliffs of Wasserkuppe.
Urness-Hanson Toadstabber
The Toadstabber was built in 1934 by Alfred H Urness & Henry J Hanson of Cashton WI. USA.
A single place, open monoplane, it was powered by a 36hp Ford engine and registered N13652 c/n HU-2.
Urness-Hanson
Alfred H Urness & Henry J Hanson
Cashton WI.
USA
Airplane builders in 1934.
URMV-3
Romania
Sovromtractor was the pre 1950 set-up of former lAR/Regia under Soviet occupation.
Further products under URMV- 3 title included the STOL utility transport. See also IAR and IAR-SA Brasov.
Urbánek II
The second design of Vilém Urbánek (sometimes identified as Urbánek II) which was exhibited at the Prague Automobile Salon of 1910 in an unfinished form. The aim of Urbánek was to design an “automatic” device for lateral control.
In the available photographs of the machine can be seen a long construction of lattice fitted before the wing used in such a way that when one wing half dropped (or rose) the other wing half would automatically compensate in the opposite direction. The machine was never finished, so it was never determined whether the automatic stability system devised by Urbánek would work in actual flight.
Urban Aeronautics X-Hawk
Israeli company, Urban Aeronautics, has been working on a next-generation follow-on to the Piasecki AirGeep, the “X-Hawk”. The company has developed a prototype and got it off the ground.
Universal Dynamics Research and Development Defiant 500
A turboprop-engined metal lightplane.
Universal Dynamics Research and Development Defiant 300
A piston-engined wooden two-seat lightplane (first flown 1988) in rhe Philipines.
Universal Dynamics Research and Development
Philipines
Developed piston-engined Defiant 300 wooden two-seat lightplane (first flown 1988) and later turboprop-engined Defiant 500 metal lightplane.
All Aero 