Proto 2 was a training

biplane A biplane is a fixed-wing aircraft with two main wings stacked one above the other. The first powered, controlled aeroplane to fly, the Wright Flyer, used a biplane wing arrangement, as did many aircraft in the early years of aviation. While ...

manufactured at the ''

Fabrica de avioane Astra The Astra Aircraft Factory () in Arad was the second Romanian factory to build aircraft. Its activity took place between 1923 and 1925, producing four models of aircraft: ''Astra-Șeșefschi'', Proto 1, Proto 2 and Astra-Proto. History From 19 ...

'' in Arad in 1924.

Design and development

Following the accident of Ioan Sava, a new variant of the

Proto 1 Proto 1 was a training biplane designed by Major :ro:Ștefan Protopopescu, Ștefan Protopopescu in collaboration with Dumitru Baziliu and Gheorghe Ticău at Arsenalul Aeronautic in Bucharest in 1922. It was the first Romanian airplane to be built ...

was created, called the Proto 2. The airplane kept the original design, but as a safety measure, the structure of the wings was strengthened by increasing the section of the

spars SPARS was the authorized nickname for the United States Coast Guard (USCG) Women's Reserve. The nickname was derived from the USCG's motto, "—"Always Ready" (''SPAR''). The Women's Reserve was established by law in November 1942 during Wor ...

and adding another pair of

interplane struts In aeronautics, bracing comprises additional structural members which stiffen the functional airframe to give it rigidity and strength under load. Bracing may be applied both internally and externally, and may take the form of struts, which act in ...

Service

After these improvements were made, the Astra Factory built 25 aircraft. The airplanes were then supplied to the Ministry of War, which assigned them to the Military Flying School of

Tecuci Tecuci () is a city in Galați County, Romania, in the historical region of Western Moldavia. It is situated among wooded hills, on the right bank of the Bârlad River, and at the junction of railways from Galați, Bârlad, and Mărășești. ...

Specifications

References

{{Reflist Single-engined tractor aircraft Aircraft first flown in 1924 Ștefan Protopopescu 1920s Romanian military aircraft Biplanes