Rubik R-08 Pilis (Tonsure)

A reduced-scale single-seat version of Szittya, 1938, 210 built

Variants:
R-08a – gull-wing, curvaceous semi-monocoque plywood fuselage, 1 built 1939
R-08b – simplified fuselage structure, 5 built 1938/39
R-08c – Gull replaced with pylon-mounted wing, 1939, 70 built
R-08d – An improved version with airbrakes & removeable canopy, 1943, 193 built postwar

Rozum-Bechiny 1910 monoplane

Designed by the Czech engineers Rozum and Bechyne and built by Emil Rudawski and Co. in Krakow. The construction of the aircraft was completed in April 1910. It was equipped a 40 hp air-cooled radial engine of their own design, one of the first Polish aircraft engines. It was presented at the factory on 4 April and the first flight was announced on 5 May.

In 1910 Pole Rozum and Czech Bechiny built in Kraków, Poland, an aircraft broadly modelled after Bleriot XI and with engine of their own design. Static tests of the engine and airplane were apparently successful, but it’s unclear if there were any flights made on it.

Royal Thai Air Force RTAF-5

Development of the RTAF-5 turboprop advanced trainer and forward air control aircraft was temporarily suspended until the Fantrainer-wing manufacturing programme was complete. The RTAF-5 is similar in general layout to the OV-10 Bronco, but is powered by a single Allison 250-B17C turboprop mounted on the rear of the fuselage in pusher configuration. Four underwing hardpoints are fitted for light stores. The prototype flew on October 5, 1984, with a fixed landing gear. A retraction mechanism and other systems were due to be installed during 1985.

RTAF-5
Engine: 1 x Allison 250 turboprop, 313 kW
Span: 9.6 m
Length: 10 m
Wing area: 15.7 sq.m
Empty wt: 1645 kg
MTOW: 2154 kg
Warload: 225 kg
Max speed: 213+ kph
Initial ROC: 91 m / min
T/O run (to 15m): 700 m
Ldg run (from 15m): 915 m
Fuel internal: 219 lt