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Slingsby T 30 Prefect
Slingsby T30A Prefect
This single-seat intermediate trainer is basically an updated and improved version of the Grunau Baby, of which Slingsby had built a small number under licence before the war as the T5 Baby.
Of conventional wood and fabric construction, it has a braced wing with air brakes but no flaps, and a nose skid under the forward fuselage just ahead of the non-retractable monowheel; there is also a tailskid, and the tailplane is braced. The pilot sits in an open cockpit and has a small windscreen.
The Prefect, which first flew in prototype form in June 1948, is semi-aerobatic and suitable for cloud flying and cross-country flights.
Altogether 30 Prefects were built for clubs and other civil users, and 16 for the ATC as the T30A Prefect TX Mk 1 (WE979 to WE993 and WG783).
Prefect WG783 was initially delivered with camera mounting fittings and flaps fixed in the down position for the second stage of carrier wake trails, which involved flying a glider from the deck of an aircraft carrier to investigate characteristics of the wake over the flight deck.
Span: 45 ft 0 in
Length: 21 ft 3.5 in
Height: 4 ft 2 in
Wing area: 154 sqft
Aspect ratio: 13.2
Empty weight: 390 lb
Max weight: 587 lb
Max speed: 100 mph
Min sinking speed: 2.75 ft/sec
Best glide ratio: 21:1

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