LWD Zuch

infobox Aircraft
name =LWD Zuch
type =Trainer/aerobatics aircraft
manufacturer =Lotnicze Warsztaty Doświadczalne


caption =
designer =
first flight = 1 September, 1948
introduced = 1949
retired = 1963
status =
primary user = Poland
more users =
produced = 1948-1950
number built = 7
unit cost =
variants with their own articles =
developed from=LWD Junak-1The Zuch was a Polish aerobatics and trainer aircraft, built in 1948 in the LWD bureau and produced in a small series.

Design and development

The aircraft was a development of a military and civilian trainer plane LWD Junak-1, meant as a civilian aerobatics and trainer plane for the Polish Aero Club. It was designed in the "Lotnicze Warsztaty Doświadczalne" (LWD - Aircraft Experimental Workshops), a main designer was Tadeusz Sołtyk. The design was similar to Junak-1, the main difference was en engine. Unlike Junak, its fixed landing gear, in massive covers, was lacking struts. It was also fitted with split flaps and had slightly enlarged rudder (similar improvements were later adapted in Junak-2).

The first variant Zuch-1 was powered by the Czechoslovak 160 hp Walter Minor 6-III inline engine in a long, slant nose. The prototype flew first on September 1, 1948. The design was quite successful and fit to aerobatics, but it did not enter production because of decision not to produce Walter Minor engines in Poland. The prototype served in aero clubs from 1950 until end of 1955, with markings SP-BAD.

The second prototype Zuch-2 was fitted with a radial engine Bramo Sh 14. It was flown on April 1, 1949 and carried markings SP-BAG. Because of increased drag, maximum speed was lower - 222 km/h comparing to 244 km/h of Zuch-1. Because there were several Sh 14 engines available, left in the country by retreating Germans, the LWD next built a short series of 5 Zuch-2s in 1950. They carried markings SP-BAL - SP-BAP and served in aero clubs until 1955, except SP-BAM, which served until 1963.

Operators

;POL
*Aeroklub Polski

urvivors

;Zuch-1 (SP-BAD):Preserved in the Polish Aviation Museum in Kraków (damaged and disassembled).;Zuch-2 (SP-BAM):Preserved in the Polish Aviation Museum in Kraków (disassembled).;Zuch-2 (SP-BAO):Preserved in the Polish Aviation Museum in Kraków (incomplete and disassembled).

pecifications (Zuch 2)

Description

Mixed construction (steel and wood) low-wing monoplane, conventional in layout. Fuselage of a steel frame, covered with canvas, in front with metal sheet. Two-spar wings of wooden construction and trapezoid shape, canvas and plywood covered, fitted with split flaps. Cockpit with two seats in tandem, under a multi-part closed canopy. Conventional fixed landing gear with a tail wheel, main gear in massive covers. Engine in front: Zuch-1: 6-cylinder inline engine Walter Minor 6-III (118 kW / 160 hp), Zuch-2: 7-cylinder radial engine Bramo Sh 14 (118 kW / 160 hp) with a ring cover with individual cowls for cylinders. Two-blade wooden propeller.

aircraft specifications

plane or copter?=plane
jet or prop?=prop
crew=two - student and instructor
capacity=
length main=7.61 m
length alt=
span main=10 m
span alt=
height main=2.1 m
height alt=
area main=17.50 m²
area alt= 188 ft²
empty weight main= 658 kg
empty weight alt=
loaded weight main= 1,020 kg
loaded weight alt=
max takeoff weight main=
max takeoff weight alt=
engine (prop)=Bramo Sh 14
type of prop= air-cooled 7-cylinder radial engine
number of props=1
power main=160 hp
power alt=118 kW

max speed main=222 km/h
max speed alt=
cruise speed main= 181 km/h
cruise speed alt=
range main=1160 km
range alt=
ceiling main=4,750 m
ceiling alt=
climb rate main=216 m/min
climb rate alt=
loading main=58.3 kg/m²
loading alt=
power/mass main=
power/mass alt=

References

*Kempski, Benedykt, "Samolot szkolno-treningowy Junak", Typy Broni i Uzbrojenia #110, Wydawnictwo MON, Warsaw 1986, ISBN 83-11-07341-4 pl icon

ee also

aircontent
related=
*LWD Junak

similar aircraft=
*Zlin Z-26 Trener

lists=

see also=

External links

* [http://www.airwar.ru/enc/la/zuch.html Photos at Ugolok Neba site]