Aircraft Towed air start unit: Boeing 707, 717, 727, 737 series, 757, 767, 747 series, some B777, DC8, DC9, DC10, MD80 series, MD90, MD11, Airbus A320 The series, A340 series, A300, A310, and A330, that is, all models except those equipped with the GE90 engine
Aircraft Towed air start unit is designed for rear air compressor and radiator (for air compressor), middle diesel engine and air filter, front cooling fan and muffler. The diesel engine-driven air compressor compression system and radiator drive, the diesel engine-driven air compressor compression system can efficiently and conveniently output low-pressure and high-flow compressed air to aircraft engines, and at the same time assist in supplying air for aircraft inspection or air conditioning. The base load-bearing capacity of the chassis is 8 tons, with a maximum of 10 tons. The upper and lower components are connected by 6 huge connecting plates through 72 M16 bolts of grade 12.9. The upper air source unit and the lower towed chassis can be separated as needed. The rear end of the main beam is welded with a hose slot assembly and can be used as a step. The chassis frame, cover shell and various units are fixed on the top. In the middle of the frame is where the fuel tank is stored. Fuel can be supplied to the diesel engine and the compressor through oil pipes. The tractor tows the trailer through the front pull frame at the front.
Aircraft Towed air start unit Technical specifications
External dimensions
The total length of the entire machine (mm) : L=7300
The total width of the entire machine (mm) : W=2200
Total height of the entire machine (mm) : H=2700
Main technical parameters
● Gas supply pressure: Start-up gas supply: 35-42psi, adjustable (factory set at 40psi) Auxiliary gas supply: 25-32psi, adjustable (factory set at 30psi)
● Gas supply flow rate: 290lbs/min
● Gas supply temperature: ≤210℃
● Minimum turning radius: 6.8m
● Minimum ground clearance: 190mm 1.1.3 Main configuration
● Towed chassis
Wheelbase: 3940mm
Wheelbase: 1424.5mm for the front wheels; Rear wheels: 1938mm
Approach Angle: 15.04°
Departure Angle: 29.26°
● Engine
Model: QSM15 77C
Type: In-line, 6-cylinder, turbocharged (air-air) intercooled, multi-functional electronically injected diesel engine
Power efficiency: 563kW
Rated speed: 2100rpm
Fuel system: XPI (Ultra-high pressure Common Rail, Electronic fuel injection)
Fuel consumption rate: 208g/kWh
Electrical voltage: 24V
● Compressor
Model: GHH CD42S
Type: Air-cooled, oil-free, twin-screw rotary compressor \ nFlow rate: 290lbs/min(131.5kg/min)
The compressor intake temperature is 20℃, the intake pressure is 1bar absolute, and the relative humidity is ≤80%. The engine speed when starting the air supply is 2100rpm
