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SZD-42 JANTAR 2B  

Dificultad: 2
Envergadura: 427 mm
Escala: 1:48
Incluye: Decals
Longitud: 140 mm
Marca: Ardpol
Material: Resina
Nº Piezas: 15
Referencia: 48-004
Requiere: Pegamento, pintura
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28.00 €
En stock: si
Peso: 400 g


Cantidad:  


SZD-42 JANTAR 2B

Originally designated SZD-42A, the Jantar 2 high performance Open Class single-seater was developed by Dipl-lng Adam Kurbiel from the all plastics SZD-38A Jantar-1 of which a small number had been built; the Jantar 2 made its first flight on 2 February 1976. The first two prototypes were flown by the Polish team in the 1976 World Championships in Finland, where they came 2nd and 3rd in the Open Class flown respectively by J. Ziobro and H. Muszczynski. These two Jantars had wings built in two sections whereas the production aircraft have the wings built in four pieces for ease of rigging and trailer transport; one of the latter aircraft, flown by R. Johnson of the USA, came 7th in the Open Class in the 1976 World Championships.

Altogether 23 Jantar 2s had been built by the beginning of 1979, and these differ from the Jantar Standard chiefly in having wings of 20.5m (67ft 3in) span and a low-set tailplane with elevators and no tabs. Up to 287lb of water ballast can be carried, and when it is the g limits of the airframe are +4.0/- 1.5, or +5.3/-2.65 g without the water ballast. The Jantar 2 is of all glassfibre construction very similar to the Jantar Standard; unlike the latter it has single-spar wings are of ribless construction with foam filled glassfibre/epoxy resin sandwich skin incorporating hingeless trailing edge flaps hung from the upper surfaces, as well as light alloy DFS-type air brakes in both the upper and lower wing surfaces. The fuselage is an all-glassfibre/epoxy resin shell structure, the centre portion of which has a steel tube frame which couples the wings, fuselage and landing gear. The cantilever tail unit is of glassfibre/epoxy resin and there is a retractable monowheel and a tailskid instead of a tailwheel.

Latest version is the SZD-42-2 Jantar 2B, which is very similar to the Mk 2 but with the wings raised from the mid to the shoulder position and the incidence reduced slightly. Up to 375lb of water ballast can now be carried, and the Jantar 2B features improvements to cockpit comfort, the monowheel retraction system and the elevator spring trim; there is provision for a towing hook on the cg. The Jantar 2B made its first flight on 13 March 1978 and 32 had been built by the beginning of 1980.

 

PERFORMANCE DATA

Data for Jantar 2
Span 20.5 m
Length 7.11 m
Height 1.76 m
Wing Area 14.25
Wing Section Wortmann FX-67-K-170/160
Aspect Ratio 29.5
Empty Glider Mass 343 kg
All-Up Mass 593 kg
Water Ballast 130 kg
Load Factors +5.3/-2.65 (dry)
Maximum L/D 47
Stalling Speed 35 kt
Minimum Sinking Speed  0.46 m/s
Max. Rough Air Speed 86.5 kt
Never Exceed Speed 135 kt

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