AE-20 Auxiliary Power Trainer
The Auxiliary Power Trainer Model AE-20 is a combination of a real APU from a large airplane and computer based training (CBT). This combination not only provides hands-on training, but also reinforces the knowledge gained in classroom lectures. The APU is mounted on a mobile stand that facilitates easy access to all parts for removal and assembly by the students.
APU Specifications:
- Power Output: 160 bhp
- RPM: 40,800
- Compressor: Two-stage Centrifugal Impellers
- Combustion Chamber: Reverse Flow Can Type with Single Burner
- Turbine: Radial Inflow Impeller
- Starting: Electric Starter
- Ignition: High Energy
- Fuel System: Gear Pump with Centrifugal Governor, Acceleration and Temperature Controls
- Lubrication System: Return Dry-Sump with engine driven Oil
- Cooler and Blower
- Layout: Single spool with reduction gearbox, output speed 6,000 rpm.
- Weight: 91 kg
Compressor
1st stage and 2nd stage single-entry impellers pressed and pinned on shaft supported in plain bearing at front and in ball bearing at rear. Radial diffuser.pressure ratio 3.3:1, and air mass flow 2.0lb. sec, at 40,800 rpm.
Control System
Electro-pneumatic type. Automatic starting. Acceleration, load and speed controls. Pneumatic exhaust temperature limiter.
Weight
200 lb.
Combustor
Reverse air flow. 1 duplex fuel burner.
Fuel System
AiResearch integral fuel system.Pump, 230 psi, governor, internal relief valve, and flow control.
Fuel consumption
1.7 Ib/shp-hr
Turbine
Radial inflow type. Turbine wheel with integral shaft supported in 2 ball bearings ahead of wheel. Exhaust temperature 1310 F (710C)
Ignition System
Bendix-Seintilla or G.L.A. ignition. 1igniter.
Power/Weight
0.71 shp/lb.
Exhaust
Fixed area single exhaust outlet.
Lubrication
Dry sump system, 90 psi air cooled oil cooler, tank.
Oil Consumption
0.02 phr.
Power take-off
Reduction gearbox at front of unit. Output shaft 6,000 rpm.
Dimensions
31 L x 30 D x 25 H Inches
Rating Max cont.
160shp/40,800 rpm/sea level
