XX400WP — 400 kgf Large Turbojet Engine

Technical Specifications

Complete ground-test performance and subsystem parameters from the manufacturer datasheet.

Core Specifications

Engine TypeSingle-shaft turbojet
Take-off Thrust420 daN ≈ 400 kgf
Dry Weight69 kg (152 lb)
Thrust-to-Weight≈ 6.09 : 1
Design Life30 h / 10 cycles
Storage Life6 years
ApplicationHigh-speed UAV, large unmanned aircraft

Physical Dimensions

Total Length1,243 mm
Inlet DiameterÎ¦286 mm
Outlet DiameterÎ¦204 mm
Max Outer DiameterÎ¦330 mm

Flight Envelope

Max Mach NumberMa 0.95
Max Altitude13,000 m (42,650 ft)
Envelope ProfileMa 0–0.25 @ 3.5km → 0.57 @ 8km → 0.7 @ 12km → 0.95 @ 13km

Ground Test Performance

Start-up Time20–23 s
Acceleration10 s (min→max)
Deceleration10 s (max→min)
Max Thrust Duration≥ 120 s
Single Continuous Run≥ 2 hours
Vibration (steady)≤ 8 g rms
Vibration (transient)≤ 15 g rms

Fuel System

Fuel GradeRP-3 (GB6537-2006)
Inlet Pressure≥ 0.05 MPa
Max Flow Capacity≥ 1,000 L/h
CleanlinessGJB420B Class 8
Outlet Filtration10 Î¼m
Inlet ConnectorFlare M16Ã1

Electrical & Lubrication

Nominal Voltage28 V DC
Continuous Power3 kW
Voltage Ripple≤ 2 V
Lubricant4050 Synthetic Oil
Oil Consumption< 150 mL/h
Oil Interruption Tol.≤ 30 s

Key Highlights

Why the XX400WP stands apart in the 400 kgf thrust class.

Outstanding Power Density

6.09:1 thrust-to-weight ratio — among the highest in its class. More thrust per kilogram means greater payload fraction and longer endurance for your platform.

Rapid Thrust Response

Full acceleration and deceleration in 10 seconds. Critical for high-speed manoeuvring and dynamic mission profiles where throttle response matters.

High-Altitude Transonic

Operates up to 13,000 m at Mach 0.95. The performance band where high-speed UAV and long-endurance unmanned platforms operate.

Long Mission Capability

Single continuous operation of ≥2 hours, with ≥120 seconds at maximum thrust. Designed for realistic, extended flight profiles.

Rugged Vibration Tolerance

Rated for ≤8 g rms steady-state and ≤15 g rms transient vibration across 0–1200 Hz. Built for the harsh reality of catapult launch and recovery.

Standard Aviation Fuel

Runs on RP-3 aviation kerosene (GB6537-2006), widely available at civilian and general-aviation airfields. 4050 synthetic oil lubrication with <150 mL/h consumption.

Applications

Platforms where 400 kgf-class turbojet power makes the difference.

High-Speed UAV Platforms

Subsonic-to-transonic flight platforms for flight-dynamics testing, sensor validation and system integration. The 30-hour design life aligns with both expendable and recoverable platform operational profiles.

Large UAV Propulsion

Heavy-payload and long-endurance unmanned aircraft requiring jet propulsion for speed, altitude and mission flexibility beyond what piston or electric power can deliver.

Experimental & Research

University laboratories, civil research institutions and propulsion integrators requiring a production-grade 400 kgf-class turbine for demonstrator programmes.

Export Compliance & Documentation

The XX400WP is classified as a dual-use item. All international shipments require an end-user certificate (EUC) and are subject to the export control regulations of the People's Republic of China. Sheng-Fang Technology assists buyers throughout the licence application process.

Every engine ships with a complete instrumented test-cell report, manufacturer's certificate of conformity, and full shipping documentation. Typical lead time is 45–60 working days, plus 30–45 days for export licence approval.