Main Menu

TeST TST-14 Bonus

tst14m


TST-14 Bonus is designed mainly for leisure thermal flights. Its performance is comparable to common two-seat gliders.  The wheels on the wing ends allow for independent taxiing and take off.

The major advantage of the TST-14 is the possible and easy installation of the power unit in order to upgrade to the TST-14M. Bonus is equipped with complete duplicate controls and avionics. These make it suitable for flying schools that provide training on motorless and motorized gliders. Aerotow capable

Instrumentation of the TST-14 Bonus glider is fully optional - the customer can either choose instruments from our list of avionics manufacturers or he/she can supply the instrumentation himself/herself during the production of the ordered aircraft. The Bonus can be delivered with an entire range of accessories and a trailer.

Since the completion and testing of the first prototype in 2005, we have sold 10 Bonus gliders to pilots in seven countries. There is greater demand for the TST-14M model, which is the version with the engine installed.

The TST-14 is a tandem two-seat, mid-winged monoplane with a cantilever wing, T-shaped tail and two-wheel tandem undercarriage. Its composite structure is made in negative molds. The wings with sandwich structure is equipped with ailerons and air brakes on the upper surface. There are no ribs in the wing. The strength system of the wing is formed by the main spar, by the aileron spar and by the root rib. All the wing profile of the sandwich structure forms the torsion box.

The wings are interconnected by fittings and two horizontal pins. The connection wing-fuselage is made by means of pins and fittings placed in the fuselage and the wing root rib. The composite ailerons are hung by four hinges with the turning axis on the upper side. Air brakes on the upper side of the wing are made of aluminium and are retracted into pits.

The fuselage with a shell structure is made in the negative mould together with the fin. The tail is a T-shaped sandwich structure. The controls, enabling pitch, roll, air brake and trim controlling, are of the lever design, with a push-pull rods system. The relevant backstops are placed on the stick. The yaw control with adjustable pedals is transmitted by cables. The airplane can be trimmed by a torsional member in the elevator drive that is controlled by a lever in the left of the front cockpit. The undercarriage consists of one unsprung main wheel 350x100 mm and one fixed front wheel. The brake handle is on the left side of the floor. The tail wheel 80x30 mm is turnable.

TST-14M Bonus is a two-seat motorized composite ultralight self-launcher with a retractable power unit, suitable for thermal flying, long wave or ridge flights and for flying schools. The aircraft also offers easy handling and the capability of independent take off. TST-14M Bonus is designed mainly for leisure thermal flights. Its performance is comparable to common two-seat gliders. The plane is equipped with a retractable power unit enabling independent take off and reach of an airfield without any thermal support. Engine extraction and retraction is fully automatic and is controlled by electronic servo motors. The power unit is operated by the pilot using two buttons on the instrument panel. The handling of a landed Bonus is very easy thanks to its weight. The wheels on wing ends allow for independent rolling and take off. Production commenced in 2004.

Steve Meassick, a dealer of TeST gliders in the USA, has successfully finalized the certification of the two-seater self-launcher TST-14M Bonus in the LSA category.

test-tst-14m
TST-14 Bonus M


The Bonus glider can also be delivered in a motorless version (type TST-14), ready for possible future engine installation. Since the completion and testing of the first prototype in 2005, Test have sold 18 Bonus gliders to pilots in seven countries.

With a 17 meter wing span, complete duplicate controls and the ability to extract and retract the engine anytime during the flight, up to 150 km range is possible with the Rotax 503 engine engaged. The TST-14M is still aerotow capable. The Rotax 503 has two carburetors and reducer B, ratio 1:2. An electric starter is standard. The propeller is wooden, two-bladed with fixed adjustment; diameter 1200 mm.

The TST-10 ATLAS, TST-13 JUNIOR and TST-14 BONUS – formed the core of the 2009 production program and have brought a great deal of commercial success.

 

The TST-14J BonusJet is a two seat, high performance, self-launching, jet powered sailplane. Featuring a PBS TJ-100 turbine engine on a retractable pod, it is capable of self launching, cross country soaring and cruising flight.
 
Test-BonusJet
TST-14J BonusJet
 
Phase one flight tests have been completed. All systems are functioning perfectly. Initial flight tests show a climb rate in excess of 900 ft/minute.

 

TST-14 Bonus
Wing span: 17 m
Wing area: 12.01 sq.m
Aspect ratio: 24
Length: 8.24 m
Seats: 2
MTOW without BRS: 450 kg
MTOW with BRS: 472.5 kg
Weight of crew: 65 - 180 kg
Vne: 205 km/h
Max. maneuvering speed: 150 km/h
Max. speed with extended air brakes: 150 km/h
Max. speed in aerotow: 150 km/h
Stall speed: 65 km/h
Max. theor. glide ratio without winglets: 37 by 105 km/h
Max. glide ratio with winglets:  39 by 105 km/h
Min sink rate: 0,65 m/s at 85 km/h
Max. permitted load factor: +4 / -2
Max. calculated load factor: +5.2 / -2.6

TST-14M Bonus
Wing Span: 12m
Wing Area: 12.01sq.m
Aspect ratio: 24
Length: 8.24 m
Empty Weight: 472kg
MTOW without BRS: 450 kg
MTOW with BRS: 472 kg
Weight of crew and fuel: 65 - 188 kg
Structure: all-composite
Seats: 2
Vne: 205 km/h
Max. maneuvering speed: 150 km/h
Max. speed with extended air brakes: 150 km/h
Max. speed in aerotow: 150 km/h
Stall speed: 65 km/h
Max. theor. glide ratio without winglets: 37 at 105 km/h
Max. glide ratio with winglets: 39 at 105 km/h
Min. sink rate: 0,65 m/s at 85 km/h
Max. permitted load factor: +4 / -2
Max. calculated load factor: +5.2 / -2.6
Engine: Rotax 503, 34 kW (46 HP)
Reducer: 1:2
Propeller: Wooden, 1200mm
Fuel tank capacity: 30 liters
Fuel consumption when climbing: 11 liters / h
Fuel consumption at cruising speed: 9 liters / h

tst14m



 

 


Copyright © 2017 all-aero. All Rights Reserved.
Joomla! is Free Software released under the GNU General Public License.