SW240B 24 kgf turbojet engine
Mid-Range Turbojet

SW240B

24 kgf / 235.4 N Class · 38,000–116,000 rpm

A lightweight turbojet with the V3 micro-ECU. 235.4 N from a 1.74 kg engine unit — a bare-engine thrust-to-weight ratio of 13.8:1, 2,160 g all-up with accessories. Runs on aviation kerosene, starts electronically, and reports telemetry over RS-232.

24 kgf
Thrust
235.4 N
Rated
1.74 kg
Engine Weight
13.8:1
T/W (bare)
116,000
Max RPM
750 °C
Rated EGT
Technical Data

Full Specifications

Every parameter below comes from the manufacturer's Rev. A/2 datasheet.

Performance

  • Rated Thrust24 kgf / 235.4 N / 52.9 lbf
  • Idle to Max Speed38,000 - 116,000 rpm
  • Minimum Speed28,000 rpm
  • Thrust-to-Weight (bare engine)13.8 : 1
  • Thrust-to-Weight (all-up)11.1 : 1
  • Max Fuel Flow780 g/min
  • Equivalent Full-Throttle Flowapprox. 46.8 kg/h

Physical & Installation

  • Max Diameter115.4 mm
  • Overall Length277.5 mm
  • Engine Unit Weight1,740 g
  • ECU Weight (V3)42 g
  • All-up Weight (with accessories)2,160 g
  • Operating Temperature-40 C to +50 C
  • InstallationSingle-shaft turbojet, fixed mounting frame supplied

Start & Run Settings

  • Fuel Pump Voltage0.5-1.2 V
  • Speed Ramp100 %
  • Fuel Pump Ramp3
  • Glow Plug Voltage5-7 V
  • Ignition Fuel Valve40
  • Ignition Speed3,000 rpm
  • Preheat Speed5,000 rpm
  • Clutch Disengage Speed20,000 rpm
  • Acceleration / Deceleration Curve25 / 25
  • Cooling Setting5,000 rpm
  • Fuel Pump Limit13 V
  • Min. Supply Voltage10 V

Control & Telemetry

  • Throttle SignalPWM 1-2 ms (1 ms = 0 %, 2 ms = 100 %)
  • PWM Logic Level3.3 V or 5 V
  • Start SwitchPWM-controlled, one-key electronic start
  • TelemetryRS-232
  • Starter MotorElectric, retractable
  • Eject Time0.5 s
  • Eject Voltage4 V
  • Run Voltage4 V

Accessories & Logistics

  • Accessory SetEngine unit, ECU (V3), GSU, mounting frame, brushless fuel pump, power cable, signal cable, throttle cable, ball valve, fuel filter, 1.5 m fuel lines
  • Packing Case35 x 27 x 20 cm
  • Packing Weight2.75 kg
  • FuelAviation kerosene
  • Lubricant3 % - 5 % turbine oil in fuel
  • Service Interval25 h

Compliance

  • Thrust Class24 kgf / 235.4 N
  • Dual-Use ThresholdBelow the 400 N threshold - no export licence required for most destinations
  • Manufacturer ScopeModel-aircraft flight, competition, demonstration, firefighting and road-surface drying only
  • DatasheetRev. A/2 technical specification sheet, full parameters published
Why This Model

What Sets It Apart

Power density

235.4 N from a 1740 g engine unit - a bare-engine thrust-to-weight ratio of 13.8:1.

42 g ECU

The V3 ECU weighs 42 g, so the whole accessory set adds only 420 g to the airframe.

490 lighter than the Pro

Same 24 kgf rating as the SW240Pro, but the lightweight V3 ECU and brushless pump bring all-up weight down by 490 g.

Speed band

Runs 38,000 to 116,000 rpm with a 38,000 rpm idle and 5,000 rpm cooling setting.

Kerosene and 25 h service

780 g/min at full throttle on aviation kerosene with 3-5 % turbine oil; scheduled service every 25 hours.

Civil scope, full datasheet

Manufacturer-rated for model flight, competition, demonstration, firefighting and road drying. Every start, run and control parameter is published - no guesswork.

Applications

Where It Fits

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

High-Speed Unmanned Aircraft

Primary propulsion for fixed-wing and hybrid airframes in the 24 class.

Firefighting & Emergency Response

High-thrust, low-weight power for rapid-response unmanned platforms.

Industrial Air & Surface Drying

Compact jet output for drying, cleaning and air-movement duties.

Research & Competition Flight

Repeatable, fully documented parameters for test benches and race airframes.

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 (V3), GSU, mounting frame, brushless fuel pump, power cable, signal cable, throttle cable, ball valve, fuel filter and 1.5 m fuel lines.

Ask for pricing and lead time

Tell us the airframe, target thrust and operating profile — we reply within 24 hours with a quote and the full datasheet.