His aviation background included multiple ratings and professional performances at air shows in both propeller and jet-powered aircraft.
The concept behind the Model 51 was an attempt to provide primary training in a jet-powered aircraft.
Such systems were installed on aircraft carriers in the late 1940s and early 1950s, as jet-powered aircraft began to appear in navies.
The flights were highly publicized, and for many years the Italians were credited with having the first jet-powered aircraft.
The remaining nine are jet-powered aircraft.
Production of model aircraft continued after the war with a mixture of civilian airliners and new jet-powered aircraft.
At the time, the only jet-powered aircraft were military types, most of which were fighter designs.
To buy one expensive and untried jet-powered aircraft type was brave: to buy both was at the time, unheard of.
In a way, this is similar to the principles of air thrust vectoring, a technique which has long been used in military jet-powered aircraft.
It produces jet engines for cruise missiles and small jet-powered aircraft.