Allenbaugh A / Allenbaugh B

Allenbaugh A NR256Y

The 1935 single-place Allenbaugh A NX/NR256Y mid-wing racer was powered by a 40hp Salmson AD-9 engine.

Allenbaugh A NR256Y

The Allenbaugh A was modified in 1936 as the Allenbaugh B with an Argus motor and re-registered NR/N41Y.

Allenbaugh B NX41V

Allenbaugh A
Engine: 40hp Salmson AD-9
Wingspan: 18’0″
Length: 15’6″
Seats: 1

Allenbaugh B
Engine: Argus
Wingspan: 18’0″
Seats: 1

LWD Mis

During 1947 LWD commenced development of a light transport for use as a feederliner. Named Mis, it is a high wing monoplane of composite wood and metal construction.

The wing is wood, and the fuselage a metal, basically rectangular structure, with a rounded decking on the upper and lower surfaces.

Other features are a single fin and rudder and a fixed tricycle undercarriage, the main wheels strutted to the fuselage and engine nacelles.

The Mis accommodates a crew of two and eight passengers.

Engines: 2 x Argus As 10, 240 hp
Wingspan: 16 m / 52 ft 6 in
Length: 12 m / 39 ft 4.5 in
Wing area: 40 sq.m / 430 sq.ft
Empty weight: 2000 kg / 4410 lb
Loaded weight: 3000 kg / 6615 lb
Cruise 60%: 220 kph / 137 mph
Crew: 2
Passengers: 8

PZL S.1

The aircraft was designed by engineer Eugeniusz Stankiewicz, being a teacher in the Aviation School in Zamość. Works started in late 1944, soon after the liberation of eastern Poland, when central and western parts were still occupied by the Germans. The design of a trainer and liaison plane was approved by the Polish military Aviation Command, and Stankiewicz completed documentation in an aircraft factory PZL-Mielec in Mielec (the factory was destroyed by the Germans and at that time existed as repair works only).

There, a prototype was built, utilizing parts of the Soviet Polikarpov Po-2, like an engine with a propeller, wheels and seats, also a construction of a fuselage was similar to the Po-2. The plane, named S-1 (for Stankiewicz), was very simple.

Wooden construction braced high-wing (parasol wing) monoplane, conventional in layout. Fuselage built of a frame, plywood and canvas covered. Rectangular wing with rounded tips, two-spar. Crew of two, sitting in tandem, in open cockpits with windshields. Fixed conventional landing gear, with a rear skid. Radial engine M-11D in front, with a Townend ring, two-blade wooden propeller (2.4 m diameter). Fuel tanks 126 L.

It was flown on 15 November 1945, by the Soviet pilot Piotr Kondratyenko. It was the second Polish-designed plane, that flew after the war (the first was LWD Szpak). Further aircraft were not produced.

The prototype crashed on 14 May 1946 in Warsaw in a bad weather, however its pilot, who was Stankiewicz himself, survived.

Powerplant: 1 × Shvetsov M-11F, 93 kW (125 hp)
Propeller: 2-bladed fixed-pitch
Wingspan: 13 m (42 ft 8 in)
Wing area: 20 m2 (220 sq ft)
Length: 8.5 m (27 ft 11 in)
Height: 3.2 m (10 ft 6 in)
Empty weight: 700 kg (1,543 lb)
Gross weight: 1200 kg (2,640 lb)
Wing loading: 60 kg/m2 (12 lb/sq ft)
Maximum speed: 180 km/h (110 mph, 97 kn)
Stall speed: 55 km/h (34 mph, 30 kn)
Range: 600 km (370 mi, 320 nmi)
Service ceiling: 3,800 m (12,500 ft)
Rate of climb: 3 m/s (590 ft/min)
Crew: 2