The TeST TST-13 Junior is a single-seat touring motor glider with a nose-mounted engine, built by TeST in Czech Republic. It is an all composite design which succeeded the TeST TST-9 Junior motor glider in production, incorporating some features of the TeST TST-10 Atlas sailplane, including its wing.[1]
| TST-13 Junior | |
|---|---|
| Role | Motor glider Type of aircraft |
| National origin | Czech Republic |
| Manufacturer | TeST sro (Division of Comp-Let sro), Velké Meziříĉi |
| Number built | 5 by 2007 |
| Developed from | TeST TST-9 Junior, TeST TST-10 Atlas |
TeST introduced the TST-13 single seat motor glider in 2005 as an all-composite replacement for their wood and composite TST-9. It has a similar layout, front engined and with a high T-tail. The TST-13 shares a similar rear fuselage and tail design and identical wing spars with the all-composite TST-10 single seat sailplane. It is a mid wing design with straight tapered wings which, unlike those of the TST-10, are swept forward 5° at 25% chord. The wing tips carry winglets and there are outboard ailerons, two position flaps and upper surface spoilers.[2]
The fuselage of the TST-13 is built from two half shells which incorporate the straight tapered fin. The fuselage tapers rearwards, producing an arched shape below. The tailplane carries a single piece elevator. The light aircraft style cockpit has a rear hinged, single piece canopy and is placed ahead of the wing leading edge. The TST-13 has a tailwheel undercarriage, with spatted mainwheels on fuselage-mounted, sprung, cantilever legs.[2]
There is a choice of two engines: either a 31 kW (42 hp) Rotax 447 or a 37 kW (50 hp) Rotax 503.[2] The 447 drives a propeller which is only adjustable in pitch on the ground, but that of the 503, geared down 2:1, can be feathered in flight. Feathering improves the best glide ratio from 1:24 to 1:32. The greater power of the Rotax 503 increases the cruising speed by about 10 km/h and the climb rate to about 6 m/s (1,200 ft/min).[3]
5 TST-13s had been built by 2007.[2] In mid-2010 2 appeared on civil aircraft registers of European countries west of Russia.[4] The TST-13 is designed to meet the US LSA glider constraints and is S-LSA registerable.[3]
Data from Jane's All the World's Aircraft 2010/11[2]
General characteristics
Performance
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