Aircraft Towed air start unit

Aircraft Towed air start unit

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