Name: Sheng-Fang SW300Pro Turbojet Engine
Brand: Sheng-Fang
SKU: SW300Pro

Technical Specifications

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

Core Specifications

ModelSW300Pro
Rated Thrust30 kgf / 294 N / 66 lbf
Engine Weight2,560 g
ECU Weight450 g
All-up Weight (with accessories)3,490 g
Thrust-to-Weight (bare engine)11.7 : 1
Thrust-to-Weight (all-up)8.6 : 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

Diameter132 mm
Length331.4 mm
Exhaust Nozzle Diameter93.6 mm
Packing Case42 × 28 × 22 cm
Shipping Weight4.2 kg
Dimension DrawingSupplied with the datasheet

Run Parameters

Speed Range38,000–98,000 rpm
Idle Speed38,000 rpm
Minimum Speed20,000 rpm
Max Speed98,000 rpm
Acceleration Curve25
Deceleration Curve25
Cooling Setting4,000 rpm

Fuel System

FuelAviation kerosene
Lubricant Ratio3%–5%
Max Fuel Flow820 g/min
Equivalent Full-Throttle Flow≈ 49 kg/h
Fuel Pump Voltage0.5–1.2 V
Fuel Pump Ramp3
Fuel Pump Limit15 V

Start-up Settings

Glow Plug Voltage6.0–6.8 V
Ignition Fuel Valve40
Ignition Speed3,000 rpm
Pre-heat Speed4,000 rpm
Clutch Release Speed16,000 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 SW300Pro fits high-speed unmanned flight programmes.

High Power Density

294 N from a 2.56 kg engine unit — an 11.7:1 bare-engine thrust-to-weight ratio for compact airframes.

Very High Speed Band

38,000 to 98,000 rpm delivers fast throttle response and fine thrust resolution in the light-mid class.

Smallest Pro Footprint

331 mm length and 3.5 kg all-up — the easiest Pro-series engine to package and to carry as a spare.

Standard Aviation Fuel

Aviation kerosene with 3–5% lubricant; full-throttle flow 820 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 4.2 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

Compact unmanned aircraft needing jet-class speed from a very light 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 below the 400 N threshold used in dual-use classification, so most orders ship without an export licence. Every shipment still requires an end-user certificate (EUC) and a review of the destination and stated end use.

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.