Proudový motor - XuHuai X170

XuHuai X170 – miniature jet engine

A convincing jet aircraft model deserves propulsion with the right sound and character. The XuHuai X170 delivers a maximum thrust of 171.5 N and is part of the XuHuai XH range of miniature jet engines for experienced modelers who fly RC turbines. The engine body has a diameter of 106 mm and a length of 242 mm; the engine dry weight is 1600 g. The system is built around an integrated digital control unit, a brushless starter motor and a matching fuel pump.

At the heart of the engine is a single-stage centrifugal compressor and a single-stage turbine. The rotor is supported by two ceramic bearings lubricated by oil mixed into the fuel. The ceramic igniter ignites liquid fuel directly. The brushless starter motor is mounted at the front and spins the rotor through a clutch that disengages once the engine reaches the speed required for self-sustained operation. The installed FOD protective screen helps prevent foreign objects from being ingested.

The built-in FADEC electronic control unit manages startup, engine operation and the cool-down cycle after shutdown. Fuel is delivered by an external, electronically controlled gear pump with a brushless motor, matched to this turbine type. The handheld GSU (Ground Support Unit) programming unit allows you to configure and display RPM, temperature and operating data. It can be disconnected before flight if the approved connection procedure is followed; engine control remains onboard.

Key features

• Maximum thrust 171.5 N; idle thrust 7 N.
• Integrated FADEC (ECU) control unit with automatic startup and post-shutdown cool-down sequences.
• Brushless starter motor, ceramic igniter and two ceramic rotor bearings.
• Matching brushless gear fuel pump and handheld GSU unit included.
• FOD intake protective screen included.
• Runs on Jet A-1 aviation fuel or diesel fuel with the specified lubricating oil.

Technical data

• Maximum thrust: 171.5 N
• Idle thrust: 7 N
• Diameter: Ø106 mm
• Overall length: 242 mm
• Engine dry weight: 1600 g
• Idle speed: 35,000 rpm
• Rated maximum speed: 115,000 rpm
• Fuel consumption at maximum thrust: 600 g/min
• Engine battery: 3S LiPo, nominal voltage 11.1 V, 2200 mAh, at least 25C; maximum supply voltage 12.6 V
• Receiver power supply: Separate 2S LiPo battery, nominal voltage 7.4 V; connected equipment must be compatible with the actual supply voltage
• Recommended service interval: 25 operating hours

Performance figures apply at standard atmospheric pressure and an ambient temperature of 15 °C. The engine dry weight is not the weight of the complete installed system. Fuel consumption is specified by mass in g/min; it must not be confused with ml/min.

Fuel and lubrication

Jet A-1 or kerosene is the preferred fuel. Diesel fuel is also permitted, although it may result in slower startup and acceleration and more visible smoke. Use Mobil Jet Oil II at 5% of the fuel volume, measured by volume. Bearing lubrication depends on this oil; never run the engine on fuel without oil.

Package contents

XuHuai X170 engine with FOD protective screen, matching brushless fuel pump, handheld GSU unit, main wiring harness, fuel pump wiring harness, Festo fuel filter, fuel tubing, ball valve and operating instructions.

Required for commissioning

• A suitable turbine-powered aircraft model or a safe test stand, appropriate mounting and any required intake or exhaust pipe components.
• A suitable fuel tank, equipment for bleeding and filling, approved fuel and oil, and, depending on the installation requirements, a fuel air trap tank.
• The specified engine battery and a separate receiver battery, compatible charging equipment, and an RC system with a latched engine shutdown control and an adjustable fail-safe function.
• A CO₂ fire extinguisher with a capacity of at least 2 kg, eye and hearing protection, and suitable fuel-handling equipment.

Before the maiden flight

1. Complete the installation according to the full instructions and model guidance; resolve any questions about connections or exhaust pipe dimensions before starting the engine.
2. Check the fuel system and independent power sources, then configure the throttle calibration, engine shutdown and fail-safe function for the equipment being used.
3. Before flying, commission the engine under supervision and perform a ground test with the model safely secured, including engine shutdown and cool-down.

Important: Intended for unmanned RC models operated by sufficiently experienced users. Automatic control does not replace supervision. In the event of a malfunction, do not rely on automatic overheat shutdown or on restarting the engine in flight.