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The Frank Turbine engine is a jet engine designed for model aircraft, characterized by high power and thrust relative to its size and mass. It operates on the recoil effect generated by air and exhaust gas flow, with a gas turbine as its central component. This manual covers the FT 180, FT 220, and FT 250 models.
The engine's core function is to provide thrust for model aircraft. It is managed by an Electronic Control Unit (ECU), specifically the HORNET-III, which oversees critical turbine parameters during operation. The ECU prevents excessive increases or decreases in RPM and regulates acceleration rates based on exhaust temperature during throttle movements. A "motor stop" switch is recommended to place the ECU on standby or turn off the engine.
The engine requires a 3S LiPo battery with a minimum capacity of 3000 mAh for its power supply, connected directly to the ECU without an intervening switch. For fuel, the system utilizes Kerosin (Jet-A1) or Petroleum, with a recommended oil content of 4-5%. Ultimate or V-Power Diesel can also be used, but with a lower oil content of 2-3%. Winter diesel is explicitly not suitable. Only special Frank Turbine Oil should be used to prevent bearing damage and maintain warranty validity.
The fuel system is critical for proper operation. Suction lines should be as short and thick as possible, without quick connectors. Pressure lines can use quick connectors but should also be kept short. Vent lines in fiberglass tanks must be short and thick. A felt pendulum is essential in the main tank. A filter must be installed after the pump and before the turbine to prevent contamination. For hopper tanks, metal sintering filters with low resistance are recommended. The manual suggests using 6mm tube lines for pump suction and limiting the total suction line length to a maximum of 20 inches. The fuel pump should be installed in an area with sufficient cooling air, and proper venting is crucial, placed in an area with enough excess pressure.
Pump voltage specifications vary by model and pump type:
The engine's operation involves several checks and procedures:
Warranty on the engines is 24 months from the date of sale, provided specific service times are met after 25 hours of operation, and special Frank turbine oil is used. Service must be performed by an authorized service location in Austria, Germany, or Ultimate Jets Cypress, TX 77433. The warranty is void if the engine is opened by unauthorized personnel or if used improperly (e.g., not exclusively for model aircraft).
After 25 hours of operation, the engine must undergo an operational safety test at a certified service center. Dusty flight conditions and external landings can reduce the maintenance interval. Under optimal conditions (no dust, Jet A1 fuel, constant operating speed), maintenance is recommended every 50 hours.
| Brand | Frank Turbine |
|---|---|
| Model | FT 180 |
| Category | Engine |
| Language | English |
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