Avenger Air Defense System ECU/PPU

Specifications

System Specification: Per MIS-46246D
Exterior Dimensions (L × W × H): 16.5 × 39.0 × 22.0 in
Gross Weight (including fuel): 440 lb
Electrical Output: 6.0 kW @ 28 VDC
Rated Current: 213 A
Air Flow: 260 CFM
Heating Capacity: 10,000 Btu/hr
Cooling Capacity: 12,500 Btu/hr
Refrigerant Type: R-134a
NBC Filter Size: 0.3 micron
Engine Type: Hatz 2G-40, air-cooled diesel
Fuel Type: DF-1, DF-2, JP-4
Fuel Capacity: 5.5 gallons
Operating Temperature: –25° to +125°F
Altitude Range: Sea level to 10,000 ft
Slope Angle: 0° to 31°
Generator Type: Brushless permanent magnet
Alternator Speed: 1,800–2,800 rpm
Output Voltage (Nominal): 28 VDC
Output Power: 6.0 kW

The Environmental Control Unit/Prime Power Unit (ECU/PPU) is designed for the U.S. Army Avenger Air Defense System to provide electrical power, cooling, heating, and make-up air to the turret. The system is powered by a Hatz 2G-40 air-cooled diesel engine coupled with a shaft-mounted, three-phase brushless permanent magnet generator.

The vapor cycle air conditioning system uses environmentally compliant R-134a refrigerant and is capable of operating in severe desert conditions. Electrical heaters provide reliable heating, and the make-up air passes through an NBC filter at 40 CFM for safe operation. The control unit integrates electronic engine speed control and ECU/PPU electronic control with solid-state components mounted on printed circuit boards for high reliability.

The ECU/PPU meets U.S. Army AMCOM specifications (MIS-46246D) and ensures reliable power and environmental control for tactical operations.

Features

Provides 6.0 kW electrical output at 28 VDC with low voltage ripple (<100 mV RMS)
12,500 Btu/hr cooling and 10,000 Btu/hr heating capacity
40 CFM make-up air filtered through a 0.3-micron NBC filter
Lightweight design under 440 lb including fuel for eight hours of operation
Hatz 2G-40 air-cooled diesel engine with brushless permanent magnet generator
Electronic control unit with variable speed engine governor for optimized performance
Rugged design compliant with U.S. Army AMCOM specifications (MIS-46246D)