TeST TST-14J BonusJet

The TeST TST-14J BonusJet is a two-seat touring motor glider with a retractable PBS TJ-100 turbine engine, built by TeST in the Czech Republic. It is an all composite design.[1]

TST-14J BonusJet
Role Motor glider
National origin Czech Republic
Manufacturer TeST sro (Division of Comp-Let sro), Velké Meziříĉi, Desert Aerospace, LLC
Developed from TeST TST-14 Bonus

Development and design

The TST-14J is a Desert Aerospace, LLC modification of the TST-14 motorglider with the addition of a retractable jet engine used for self launching. It has a high T-tail. It is a mid wing design with straight tapered wings. The wing tips carry winglets and there are outboard ailerons, two position flaps and upper surface spoilers.[2]

The fuselage of the TST-14J 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 cockpit has a forward hinged, single piece canopy, and a side hinged passenger canopy. The TST-14J has a tailwheel undercarriage, with spatted mainwheels on fuselage-mounted, sprung, cantilever legs.

The 45 lb PBS TJ-100 turbine engine [3] requires a two-minute cooldown before retracting into the fuselage. The prototype was tested by Bob Carlton, an experienced jet powered glider pilot who flies an aerobatic routine in a Super Salto jet powered glider with the same engine.[4] Sonex Aircraft also uses the same engine, and hired Carlton to test its SubSonex jet-powered homebuilt aircraft.

Specifications

Data from Fly-Low

General characteristics

  • Crew: 2
  • Wingspan: 17 m (55 ft 9 in)
  • Powerplant: 1 × První Brnenská Strojírna PBS TJ-100 , 1 kN (220 lbf) thrust

Performance

  • Stall speed: 65 km/h (40 mph, 35 kn)

References
  1. Fly-Low. July 2010. {{cite news}}: Missing or empty |title= (help)
  2. "Desert Aerospace". Retrieved 13 August 2011.
  3. "TST-14J BonusJet". Retrieved 13 August 2011.
  4. "Jet Powered glider tested". Retrieved 13 August 2011.
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