PZL Bielsko SZD-22 Mucha Standard
The SZD-22 Mucha Standard Standard Class single-seater had its origins in the IS-2 Mucha (or Fly) intermediate single-seater of 1948. The first Mucha was designed by Nowakowski, Grywacz and Zatwarnicki in 1948 under the auspices of the Polish Gliding Institute, formed in 1946 at Bielsko-Biala. The Mucha-ter was developed into the SZD-12 Mucha 100 of 1953, this single-seater being used for training. It was of all-wood construction, the cantilever high wings having a single main spar and an oblique auxiliary spar, with a plywood-covered leading edge torsion box; air brakes were fitted and the ailerons were aerodynamically and mass balanced. The oval-section fuselage was plywood-covered and the pilot sat under a one-piece Plexiglas canopy. Landing gear consisted of a monowheel and short front and rear skids sprung with rudder pads.
The SZD-22 Mucha Standard was a further development of the Mucha 100 designed by R.Grzywacz espeically for the 1958 World Championships held at Leszno in Poland and, flown by Adam Witek, came 1 st in the Standard Class section of this event. The next year it entered quantity production as a replacement for the Mucha 100 and the SZD-8 Jaskolka and over 150 were built in several versions.
The SZD-22B had a plywood-covered wing and the SZD-22C, which first flew in 1958, a fabric-covered one, the type having the same all-wood construction with a single main spar and an oblique auxiliary spar as the Mucha 100; air brakes were fitted in the upper and lower surfaces, and the fabric-covered Frise ailerons were aerodynamically and mass balanced. The Mucha Standard was one of the first production sailplanes to have provision for water ballast, which was carried in rubber tanks in the inboard leading edge. The fin and rudder differ from the Mucha 100's in having a squared-off top and a straight trailing edge. The plywood-covered oval-section fuselage had a very similar landing gear to the Mucha 100's, with a monowheel and front and rear rubber-sprung skids; the SZD-22D had a modified skid and monowheel and the last variant, the SZD-22E, introduced a new wing. The pilot sits under a streamlined clamshell Plexiglas canopy and is provided with a collapsible chart table as well as the conventional insturments; an oxygen installation can also be fitted.
A special experimental high altitude version of the Mucha Standard was also developed, with the cockpit modified for flights at heights above 39,000ft.
Up to 1962, 286 were built.
SZD 22C Mucha Standard
Wing span: 15m / 49 ft 2 in
Wing area : 12.73 sq.m / 138.2 sq.ft
Length: 23 ft 0 in / 7.0 m
Height: 5 ft 3 in / 1.6 m
Aspect ratio: 17.65
Empty Weight: 240 kg / 530 lb
Payload: 110 kg / 240 lb
Gross Weight: 350 kg / 770 lb
Wing Load: 27.49 kg/sq.m / 6.2 lb/sq.ft
L/DMax: 28 @ 76 kph / 41 kt / 47 mph
MinSink: 0.73 m/s / 2.4 fps / 1.42 kt at 44 mph
Max. speed: 135 kts / 250 km/h / 155 mph (in smooth air)
Airfoil: Go 549, M 12
Structure: wood/ fabric wings and tail, wood fuselage