Now available: The new JetTeng (JTM) ViperJet in one of 5 interesting colors:
Full size Information: The Viper Jet is a jet aircraft designed and produced by Viper Aircraft Corporation in kit form for homebuilding. It is a conventional, low-wing monoplane with swept wings and tail and two seats in tandem under a bubble canopy. The jet intakes are located at the sides of the fuselage and the tricycle undercarriage is retractable. Construction throughout is of composite materials.
Product Information: The JTM ViperJet in the colors of the High Performance Aircraft Training school (HPAT) is a high performance EDF Jet in full composite design for 90mm Fan units such as the Schuebeler DS-51 or WeMoTec Midi Fan Pro. A turbine conversion to JetCat P-20, Lambert T25 or Wren 44 (see video below) can be done easily. Please check with us on suitable turbines, pipes and accessories. The model features a full composite fuselage and wing with retract hard points pre-installed in the nose and retract hatches pre-cut in the wing. The model comes completely pre-painted with all decals applied and protected by a clear coat. Further is the cockpit glued and all hatches are assembled and locks are installed in place. This model is truly ARF with all the major work done for you. Retracts and suitable scale oleo struts are available as option.
Pack contents: Fully painted and finished glass fiber fuselage, fully assembled vertical fin and pre-installed ducting, clear canopy with pre-installed lock, one-piece fully painted and finished glass fiber wing with aileron, flap and retract hatches, exhaust ducting sheet, small parts, hardware pack, gear door covers.
With the release of the new JTM L-39 full composite EDF Jet for 90mm Fans imminent, the guys from Jet Teng Models have released a few more pictures and 2 new videos of the L-39 Prototype in Breitling Colors.
The 2 pictures show close ups of the L-39 cockpit area. The factory pilot fabricated a simple custom cockpit for the plane. This cockpit will NOT be included in the production models as of now. But we are confident that a cockpit kit for the L-39 will be released in the near future once the demand for such an accessory becomes apparent to JTM.
Stay tuned for more updates. In the meantime enjoy the videos of the brake tests and the custom installed lighting kit
The second episode of FlyBoyTha1’s JTM BAE Hawk Building video series.
All servos are installed, retracts are ready.
Next Step: Fan installation, for which he takes a trip down to TamJets to get some new “goodies”.
Jet Teng is working with high pressure on their latest full composite EDF jet for 90mm Fan units.
The L-39 Albatross will have the following dimensions:
Length: 1380mm
Wing Span: 1075mm
Like the JTM Hawk, the L-39 will come pre-painted (final color schemes will be announced soon) and retract ready.
We will post updates of the new model as soon as they become available.
For the time being, a short video of the L-39’s first ever flight by the JTM factory pilot.
Some info on the full size plane:
The Aero L-39 Albatros is a high-performance jet trainer aircraft developed in Czechoslovakia to meet requirements for a “C-39″ (C for cvičný – trainer) during the 1960s to replace the L-29 Delfín. It was the first of the second-generation jet trainers, and the first turbofan-powered trainer produced, and was later updated as the L-59 Super Albatros and as the L-139 (prototype L-39 with engine Garrett TFE731). The design is still produced in an evolved state as the L-159 ALCA, while more than 2,800 L-39s still serve with over 30 air forces around the world. The Albatros – the most widely used jet trainer in the world – is versatile, seeing duty in light-attack missions as well as in basic and advanced pilot training.
Building the Hawk was a joy. All components have a superb fit and the high prefabrication of this model basically means you only need to fix your servos, fan and radio and you are ready to go.
The total weight ready to fly is 3.8kg. With the power supplied of by the DS-51/Lehner combination the plane performs beautifully in the air.
This is a picture of the retract position of our model. As the CG is at 115mm from the forward wing mount, the retracts could be installed a little bit further forward, making it easier to hide them fully in the wing.
Some info on the design of the full size plane: The Hawk is a tandem two-seat aircraft and has a low-mounted cantilever monoplane wing and is powered by a non-augmented turbofan engine. The low-positioned one-piece wing was designed to allow a wide landing gear track and to enable easier maintenance access. The wing is fitted with wide-span, double-slotted, trailing-edge flaps for low-speed performance. Integral to the wing is 836 litre (184 imp gal) fuel tank and room for the retractable main landing gear legs. Designed to take a +8/-4 g load, the original requirement was for two stores hardpoints but it was designed to fit four hardpoints by Hawker Siddeley.
The fuselage design was led by the need to get a height differential between the two tandem cockpits, this enabled increased visibility for the instructor in the rear seat. Each cockpit is fitted with a Martin-Baker Mk 10B zero-zero rocket assisted ejection seat. The centre fuselage has an 823 litre (181 Imp Gal) flexible fuel tank. The two-shaft turbofan Rolls-Royce Turbomeca Adour engine is fitted in the rear-fuselage with inlets on each side above the forward wing roots. A ram air turbine is fitted just in front of the single fin as well as a gas turbine auxiliary power unit above the engine. The forward retracting nose landing gear leg is fitted in the nose.
The air brake, located under the rear fuselage.
Performance
The Hawk was designed to be maneuverable and can reach Mach 0.88 in level flight, and Mach 1.15 in a dive, thus allowing trainees to experience transonic flight before advancing to a supersonic trainer.sIts airframe is very durable and strong, stressed for +9 g, but the normal service limit in RAF service is +7.5/-4 g.
Watch the video of our maiden flight…….
Disclaimer: The aileron throws we used where much to much……hence the high roll rate and overcompensation during take off.
