Zlin
Z 50 L


Wing Span approximately
2000mm
This kit is still in in development
stage
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Zlin Z 50 L
- Background information on the
original -
In autumn 1973 was
decided in Moravan Otrokovice to develop a new single aerobatic plane.
Chief-designer Jan Mikula prepared with his colleagues project with
type symbol Zlin Z-50 (many pilots now use only “fifty”). During
constructional works was used computer optimization for better
aerodynamic characteristic. The main problem of construction was to
find out the best engine for this aerobatic aircraft. Because there
were no engines accordant with the needs of aerobatic aircraft there
in Czechoslovakia, designers had to find an engine outside the
country. They found American Avco Lycoming AIO-540 D4B5 with power of
191 kW (260 PS) and three-blade propeller Hartzell.
The second requirement for this Aerobatics Plane was maximal unloading
of construction. That’s why designers have used continuous wing that
was screwed to the airframe. This type of wing with its weight
reduction is better for its lifetime.
Landing gear is continuous from one piece of titan stripe. Tiny layer
of metal covers airframe, some parts of tail and elevator are covered
with cloth. The main tank can hold 60 liters of fuel, which is must
only for an aerobatic display, so for cross-country flight is almost
impossible to fly without additional dismountable tanks on both ends
of wings. Design works, construction and building of the first
prototype took only one and half year (!!!). On 30th June 1975 was
carried-out engine test.
The First Flight has been undertaken on 18th July 1975 with the
chief-pilot Vlastimil Berg. The first Zlin Z-50 L ("L" = Lycoming
Engine) had mark OK-070. Set of first flights was very successful and
confirmed all the designer’s premises. Czech Aerobatic Team could
bargain for this plane in World Aerobatic Championship 1976…
With Z-50 L type grew up first fabricated special Aerobatic Airplane
in the world. It was constructed by the FAR regulations and pilots can
fly many aerobatic maneuvers from +9G to – 6G.
In 1981 year was into the Zlin Z-50 installed more powerful Textron
Lycoming AEIO-540 L1B5D with 224 kW (300 PS). This version – type Zlin
Z-50 LS – was first flown by Zdenek Polasek on 29th July 1981. The
more powerful engine boosted mainly the vertical maneuvers. Zlin Z-50
LS can with weight of 760 kg fly from +8G to –6G in Aerobatic Planes
(A category), and between +3,8 and –1,5 in N category. Many of Z-50 L
and LA versions were rebuilt to Z-50 LS in early eighties.
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