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Part 2 GMU series Air-starter
1. APPLICATION
Completely self-contained diesel powered, continuous flow air start unit for jet engine starting and air conditioning using the onboard air cycle machines (Air Pacs). Airflow is provided by a integrated dry screw compressor/gear-set for oil fee air delivery riven by a Cummins Diesel Series 60 engine with diesel and jet fuel compatibility. Endurance in air conditioning mode: approximately 8 hours of continuous operation per full fuel tank.
2. OPTIONS
Units can be trailer mounted for towing or truck mounted on a suitable chassis (consult factory). Multiple compressor selections accommodate various aircraft requirements.
3. PERFORMANCE FEATURES
Proven design
● Robust high-pressure direct coupled screw compressor
● Electronically controlled FADEC diesel engine
● Demand sensitive output regulation
● Steel support frame on heavy- duty running gear (trailer version) and sound insulated aluminum body panels
Easy to Operate
● Simple lighted operator panel mounted on unit near discharge valves
● Automatic controls for auto-start and regulation of rpm & pressure for selected mode
Economical
● Direct-coupled engine to integral compressor/gear-set requiring no clutches, external gears or pulleys
● Less moving parts equate to lower maintenance costs
● Idle and Air Con mode offer significantly less fuel burn in standby and during Air Pac operation
● Significantly less cost than running the aircraft APU
Durable
● Designed to endure the rigors of the airport environment
● Easy access to all components for maintenance
4. Performance
● GMU 200 Nominal Output - Jet Start: 200ppm (5448 kg/h)
● GMU 100 Nominal Output - Jet Start: 100 ppm (2729kg/h)
● Nominal Output Press. - Jet Start: 40 psig (276 kPA)
● Nominal Output Press. - Air Con: 30 psig (207 kPA)
● Approx. Delivered Air Temp. : 200±10° C
5. Environmental
● Operation Temperature: -40° C to + 52° C
● Relative humidity 0-95%
6. Control
● Electric with 24VDC Control Voltage
● Airflow regulation via linear actuated bypass valve with stainless steel diaphragm
● Lighted Operator panel with large push buttons and switches
● Low voltage control box for maintenance and diagnostics
7. Main facilities
Compressor
● GHH Rand high pressure air cooled dry screw
● Integral gear-set and lubrication system
Engine
● Cummins Diesel Series NTA(6CTA8. 3 for GMU100) with FADEC
● Turbocharged 4-stroke, inline 6 cylinder
● Diesel and Jet Fuel Compatible
8. Protection
Compressor
● High discharge air temperature
● Low oil level
● Low oil pressure
● High oil temperature
Engine
● Over speed
● Over crank Starting Protection
● High Water Temperature
● Low Oil Pressure
● All unit safeties are disabled in Jet Start mode to prevent premature shutdown during and engine start attempt.
Engine
● Engine low oil pressure
● Engine high water temperature
● Engine over speed
● Check Engine and Stop Engine
● Low Fuel Warning Beacon
9. Configuration
Model Output(Jet Start Mode) Length
(mm) Width
(mm) Height
(mm) Weight
(T)
GMU100 100 lb/min (2729kg/h) at 40 PSIG (276 kPa) 5500 1850 2400 3. 7
GMU200 200 lb/min (5448 kg/h) at 40 PSIG (276 kPa) 5600 1850 2500 4. 7
