Lublin R-XII

Infobox Aircraft
name=Lublin R-XII


caption=
type= Sports and touring plane
manufacturer=Plage i Laśkiewicz
designer=
national origin=Poland
first flight= Autumn 1930
introduced=
retired=
status=prototype
primary user=Poland
more users=
produced=
number built = 1
unit cost=
variants with their own articles=The Lublin R-XII was the Polish three-seat sports and touring plane, designed in 1930 in the Plage i Laśkiewicz factory in Lublin, that remained a prototype.

Design and development

Plage i Laśkiewicz works was among factories, that developed sports aircraft for an order of the LOPP paramilitary organization. Its design, the Lublin R-XII, was basically a scaled down passenger plane Lublin R-XI. The main designer was Jerzy Rudlicki. The only prototype was flown in autumn 1930 (registration SP-AFB). It was not built in series.

The plane was not successful and its performance was not satisfactory because of too much weight. It did not take part in the 3rd Polish Light Aircraft contest because of a weight limit. It was owned by the factory and little used, after a few years it was scrapped. The R-XII was the only sports plane of Plage i Laśkiewicz.

Description

A mixed construction cantilever high-wing monoplane, single-engine, conventional in layout. It had a steel framed, canvas covered fuselage (engine part covered with duralumin) and a single-piece, plywood covered, two-spar elliptical wing of wooden construction. The empennage was of steel construction, canvas covered. In a closed cabin under the wing there were two places side-by-side, with double controls, behind them was the third seat or a place for baggage. The cabin had single door on the left and front and rear doors on the right. It had a conventional fixed landing gear, with a rear skid, the main gear was joined with wings by vertical struts with oil and air shock absorbers. It had a single 5-cylinder air-cooled Armstrong-Siddeley Genet uncovered radial engine in front, delivering 88 hp take-off power and 80 hp nominal power, driving a two-blade propeller. A fuel tank was in the fuselage. The cruise fuel consumption was 21 l/h.

pecifications

aircraft specifications
plane or copter?=plane
jet or prop?=prop
ref=Glass, A. (1977)
crew=1, pilot
capacity=2, including co-pilot
payload main=
payload alt=
length main= 7.62 m
length alt=
span main= 11.5 m
span alt=
height main= 2.36 m
height alt=
area main= 18.54 m²
area alt= ft²
airfoil=
empty weight main= 504 kg
empty weight alt=
loaded weight main=
loaded weight alt=
useful load main= 325 kg
useful load alt=
max takeoff weight main= 829 kg
max takeoff weight alt=
more general=
engine (prop)= Armstrong-Siddeley Genet
type of prop=5-cylinder radial engine
number of props=1
power main= 88 hp
power alt=
power original=
max speed main=156 km/h
max speed alt=
cruise speed main= 135 km/h
cruise speed alt=
stall speed main=73 km/h
stall speed alt=
never exceed speed main=
never exceed speed alt=
range main= 550 km
range alt=
ceiling main= 4,750 m
ceiling alt=
climb rate main= 4.3 m/s
climb rate alt=
loading main= 44.7 kg/m²
loading alt= lb/ft²
thrust/weight=
power/mass main=
power/mass alt=
more performance=
armament=
avionics=

ee also

aircontent
related=
*Lublin R-XI

similar aircraft=
*Potez 36
lists=

see also=

References

*Andrzej Glass: "Polskie konstrukcje lotnicze 1893-1939" ("Polish aviation constructions 1893-1939"), WKiŁ, Warsaw 1977, p. 149 pl icon

External links

* [http://www.airwar.ru/enc/law1/lublinr12.html Photos and drawings] at Ugolok Neba page