De Havilland Vampire   

Fully laminate model including engraving and cladding, designed to be driven by a fan or a small turbine, e.g. WREN MW44.

The model can be fitted with a retractable undercarriage, e.g. JET 1A, or it can be fitted with a hook designed for starting from a catapult (this must be told when placing the order, as the undercarriage version has undercarriage shafts milled out).

Vampire disposes of outstanding flight properties, especially thanks to its firm and light structure and large wing area. Its flight can be fast and dynamic as well as slow and stable.

The body and the wings form one whole, laminated in the vacuum using the Herex material. Stiffener ribs of the wings, the main beam, parts to assemble the main undercarriage and air channels with fitting for the 90 mm blower were inserted in the body in the course of production. The wings contain a line with reinforcement for easy assembly of the body jib into the wings.  

The body jib is also made of laminate, it is drilled together with a thread for easy mounting onto the wings. The elevator profile is fitted in the back part, in a drop on the rudder. 

Thanks to this solution, the entire model, consisting of a centroplane, two jibs and the elevator, is assembled using four plastic screws.

As a standard, the model is supplied with an ABS cockpit and the seat with a clear pilot's cabin, with a set of milled bulkheads, all the parts needed to finish the model, and with building instructions. A set of self-sealing stickers with marking and labelling of the model in the English and Swiss version, and the pneumatic retracting undercarriage JET 1A, can be ordered as accessories. 

Mirage 2000   

 

Scale 1/10
Version for EDF (electric impeller - fan), dia 90mm, or turbine, e.g. WREN MW44.
This is a fully laminated model, manufactured by the Herex sandwich vacuum technology. The fuselage and planes are of a piece; this way the high stiffness of the model is achieved. The rudder can be fixed to the model as a removable piece or firmly stuck on the fuselage.
The surface of the model includes rivets and mock-up cladding.
The packaging contains also accessories, such as partitions, servo rods, air channels, a completely performed and painted cockpit, a precisely cut transparent cabin, a flue pipe (for EDF only), a complete set of adhesive labels with descriptions and matric, a maquette of the in-flight refueling device, etc.

Technical data

Length	1400mm
Wingspan	908mm
Package Weight	approx. 900g
Wing specific weight	approx. 2,6kg
Drive	Impeller 90mm
Servo	3
RC	Rudder (Delta) Motor Landing gear Front wheel

This model can be ordered both as a version with a cut hole for the landing gear, or as a version without shafts for start from the catapult.
The model is supplied in white or silver colour.
The recommended drive of the model is Impeller FAN MEGA-MOKI, dia. 90mm and LiPo 2x3 3200mA.
Mirage 2000B EDF  - 500 Euro
Mirage 2000B Turbine  - 580 Euro
Pilot color  - 30 Euro
Pneumatic landing gear
JET-1A – HT-Modellbau  - 180 Euro
Impeller - Fan MEGA MOKI  

Fairchild Republic A-10 Thunderbolt II 

The aircraft A-10 Thunderbolt II was designed for the USAF with a special purpose for the destruction of strongly armored targets and for direct support of land forces (A = Attack). It is a simple, rugged, twin-engine jet aircraft built literally “around“ its main weapon – the 30 mm seven barrel rotary cannon. Even the nose gear had to be moved to the right to mount the cannon closer to the centre line. The firing rate is optional for 2,100 or 4,200 rounds per minute, with special ammunition it is literally a tank-cracker. The aircraft A-10, also called Warthog, Tankbuster or Tankkiller is unique with its high accuracy of fire and manoeuverability especially at low speeds and low altitudes. With its eleven bomb racks it can carry up to 7250 kg of weapons!

 

The paradox is that these machines, originally supposed to end up in the scrap heap, were so successful in the Persian Gulf War that their faith was changed. Nowadays, they are gradually modernized for standards incl. the ability of using so called "intelligent" weapons. 

 

The model aeroplane was designed by the military ex-pilot Mr. Ivan Langer who has twelve years of experience in the development and design of RC models for the Graupner company  and sixty years of model-hobby experience. He also worked for the Aero-Naut company. The aerodynamic solution of the model (the sameas the full scale one) is very original and unusual, therefore its aerodynamic concept including the propulsion units optimalisation was consulted in detail with Ing. Josef Janiš who is a retired 2-Mach pilot and an expert in the aerodynamics and flight mechanics (master degree in flight engeneering). Also thanks to him the model, as regards its flying features and flight realism, has excellent qualities.

 

 

The prototype of the model has already been flying with some final scale GFK parts (body, nacelles etc.). To verify the concept the test flights were done with styro/balsa surfaces and with a low-level motorization, that means with engines Mega 16/15/4, WeMoTec 480 and 5s 4800 Kokam (static thrust 1,500g). The test flights have fulfilled our expectations. When there is no wind, 40 m of paved surface is enough for the model to take off. After the take-off it reliably gains speed and altitude. The model is capable to do all elementary aerobatic figures without problems. In a scale-like flight with some basic aerobatic figures (the full power is necessary only for vertical parts) the whole-flight average current consumption for both engines is only 20A! Such current consumption enables with used akkus even 12 minutes long flights with a sufficient batery reserve. The flying qualities are straightforward and the model is fully controllable even at the minimum speed.

 

 

As regards the optimization of the engine there should be an entire chapter about it – there were series of measurements with the engines Mega 16/25/2 and Schuebeler DS-30 (static thrust 2,500g!!).

 

 

The model was completely designed and optimized in a PC. Then the output was used for CNC milling of forms for all-fibreglass kit construction. The model has been built-up to the most peculiar details. The construction kit includes, apart from the main GFK components (body–wing fillets/VOP, landing gear nacelles, caps for the retractable landing gear, jet nozzles), vacuum-packed parts of the scale cockpit with a pilot, a scale cannon, series of milled parts, set of decals for instrument panels and stencils series, including the marking of particular machines. The construction kit has been adjusted for the the retractable landing gear mounting. The assembly instructions including series of photographs of the all particular building steps are on the CD.

 FMA IA 63 Pampa