PZL Bielsko SZD-41 Jantar Standard / SZD-48 Jantar Standard / SZD-49 Jantar
SZD-41A Jantar Standard
The 1972 Open Class SZD-38 Jantar-1 single-seater (or Amber), designed by Dipl-lng Adam Kurbiel, was developed by Dipl-lng W.Okarmus into the SZD-41A Jantar Standard, which had the same fuselage and tail unit as the Jantar-1 but new cantilever mid-set wings of 15m span designed to OSTIV Standard Class requirements.
The wings are single-spar ribless structures with foam-filled glassfibre/epoxy resin sandwich skin; no flaps are fitted and there are DFS glassfibre air brakes above and below each wing. There is also provision for 80kg (176lb) of water ballast in the leading edges. The fuselage is an all-glassfibre/epoxy resin shell, the centre portion having a steel tube frame on which the wings and the monowheel are mounted. The cantilever T-tail is also of glassfibre/epoxy resin, the fin being integral with the fuselage; the elevator has a spring trim. There is a retractable monowheel with a disc brake and a fixed tailwheel. The pilot sits on a semi-reclining seat under a flush-fitting two-piece canopy of which the front half is fixed and the rear section is removable for exit and entry.
The SZD-41A made its first flight on 3 October 1973 in the hands of A. Zientek, and the Polish team flying the type in the 1974 World Championships at Waikerie, Australia, took 3rd and 7th places in the Standard Class, while SZD-41 s were placed 4th, 6th and 18th in the 1976 World Championships at Rayskala, Finland.
The SZD-49 Jantar K is an FAI 15m class version of the Jantar Standard with wing flaps; the prototype first flew on 10 October 1978.
The SZD-48 Jantar Standard 2 single-seater is a development of the SZD-41A also designed by Dipllng W. Okarmus, and first flew in prototype form on 10 December 1977; 96 had been built by the beginning of 1980. The cantilever shoulder wings have single glassfibre roving main spars and no ribs; they are covered with glassfibre/foam/glassfibre moulded skins and have plain ailerons, with duralumin air brakes in the upper and lower surfaces. There is provision for 150 litres (33 Imp gal) of water ballast. The glassfibre fuselage has a steel tube central frame, and the rear portion is stiffened by half-frames and ribs. The cantilever T-tail is of similar construction to the wings and has a spring trim in the elevator. There is a retractable monowheel with disc brake and a semi-recessed tailwheel. With simple modifications to the trim and speed measuring systems the SZD-48 becomes the SZD-48-2.
Altogether 160 Jantar Standards had been built by the beginning of 1980 and the type has been exported to 18 countries, including both East and West Germany, the USA and the Soviet Union.
The 48-3 Standard 3 superseded the 2 first flying in 1983.
Span: 49 ft 2.5 in / 15.0 m
Length: 23 ft 4 in / 7.2 m
Height: 5 ft 3 in
Wing area: 114.7 sqft / 10.66 sq.m
Aspect ratio: 21.1
Empty weight: 551 lb / 250.0 kg
Max weight: 970 lb / 440.0 kg
Max. payload: 419.0 lb / 190.0 kg
Wing loading: 8.41 lb/sq.ft / 41.0 kg/sq.m
Max speed: 135 kts / 250 km/h / 155 mph (in smooth air)
Max aero-tow speed: 93 mph
Landing speed: 37 kts / 68 km/h
Cruising speed: 57 kts / 105 km/h
Min sinking speed: 2.03 ft/sec at 48.5 mph
Best glide ratio: 40:1 at 65 mph
48-3 Standard 3