Name: Sheng-Fang SW400Pro Turbojet Engine
Brand: Sheng-Fang
SKU: SW400Pro

Technical Specifications

Complete parameters per manufacturer datasheet Rev. A/2 — core specifications, run parameters, start-up settings, fuel system and control interface.

Core Specifications

ModelSW400Pro
Rated Thrust40 kgf / 392 N / 88 lbf
Engine Weight3,240 g
ECU Weight450 g
All-up Weight (with accessories)4,245 g
Thrust-to-Weight (bare engine)12.3 : 1
Thrust-to-Weight (all-up)9.4 : 1
StartingOne-key electronic start
Supply Voltage4S LiPo battery
Operating Temperature−40 °C to +50 °C
Rated Exhaust Temperature750 °C
Max Temperature Limit1,000 °C

Dimensions & Packaging

Diameter148 mm
Length341.1 mm
Exhaust Nozzle Diameter103.2 mm
Packing Case42 × 28 × 22 cm
Shipping Weight5 kg
Dimension DrawingSupplied with the datasheet

Run Parameters

Speed Range35,000–97,000 rpm
Idle Speed35,000 rpm
Minimum Speed20,000 rpm
Max Speed97,000 rpm
Acceleration Curve25
Deceleration Curve25
Cooling Setting4,000 rpm

Fuel System

FuelAviation kerosene
Lubricant Ratio3%–5%
Max Fuel Flow1,000 g/min
Equivalent Full-Throttle Flow≈ 60 kg/h
Fuel Pump Voltage0.5–1.2 V
Fuel Pump Ramp3
Fuel Pump Limit15 V

Start-up Settings

Glow Plug Voltage5–7 V
Ignition Fuel Valve40
Ignition Speed3,000 rpm
Pre-heat Speed4,000 rpm
Clutch Release Speed14,000 rpm
Speed Ramp100%
Min. Supply Voltage10 V
Restart After ShutdownDisabled
Starter Motor Pop-out Time0.4 s
Starter Run / Pop-out Voltage3.5 V / 3.5 V

Control & Interface

Throttle SignalPWM 1–2 ms = 0–100%
PWM Logic Level3.3 V / 5 V
TelemetryRS-232, 9,600–57,600 bps
Serial PinoutRS-232: RX / TX / GND · RS-422: T+/T−/R+/R−
GSU LinkData / +V / −V on DB15
Fault LoggingLast 1 hour recorded before fault
Maintenance Interval25 h

Key Highlights

Why the SW400Pro fits high-speed unmanned flight programmes.

Highest Power Density

392 N from a 3.24 kg engine unit — a 12.3:1 bare-engine thrust-to-weight ratio, the highest in the Pro range.

Very Wide Speed Band

35,000 to 97,000 rpm gives fast throttle response and fine thrust resolution in the mid-thrust class.

Light Integration Footprint

341 mm length and 4.2 kg all-up makes this the easiest Pro-series engine to package into a compact airframe.

Standard Aviation Fuel

Aviation kerosene with 3–5% lubricant; full-throttle flow 1,000 g/min.

Full Telemetry

RS-232 and RS-422 expose speed, EGT and status; the ECU retains one hour of data before any fault.

Serviceable Design

25-hour maintenance interval, a 5 kg shipping case and a complete accessory set with every engine.

Applications

Civil and commercial domains within the manufacturer's stated scope of use.

High-Speed UAV Platforms

Mid-size unmanned aircraft needing jet-class speed from a compact, lightweight powerplant.

Firefighting & Emergency Response

Emergency-response and firefighting platforms within the manufacturer's stated scope of use.

Research & Flight Test

University laboratories and propulsion integrators requiring a production-grade turbine for demonstrator programmes.

Scope of Use & Export Compliance

The manufacturer specifies this engine for model-aircraft flight, competition, demonstration, firefighting and road-surface drying — entertainment and civil applications only. Modification for unlawful purposes, or resale to countries under national export restrictions, is prohibited.

Rated thrust sits close to the 400 N threshold used in dual-use classification, so every export order is reviewed individually. International shipments require an end-user certificate (EUC) and, where applicable, an export licence under the regulations of the People's Republic of China.

Every engine ships with a manufacturer's certificate of conformity and full shipping documentation. Accessory set: engine unit, ECU (V4), GSU, mounting frame, power cable, signal cable, ball valve, fuel filter and 1.5 m fuel lines.