Ivchenko AI-8
# Ivchenko AI-8

The Ivchenko AI-8 is an aircraft auxiliary power unit developed and produced by Ivchenko-Progress and Motor Sich.

## Variants

### AI-8

    The base model which is used to generate electricity or supply compressed air to air-start systems. It can also be used as cabin heating if necessary.

## Specifications (AI-8)

Data from Aircraft engines of the World 1970

**General characteristics**

* Type: Auxiliary Power Unit (APU)
* Length: 725 mm (28.5 in)
* Width: 600 mm (24 in)
* Height: 550 mm (22 in)
* Diameter: ~500 mm (20 in) casing diameter
* Dry weight: 145 kg (320 lb)

**Components**

* Compressor: 1-stage centrifugal compressor
* Combustors: Annular combustion chamber with 6 fuel injectors
* Turbine: 1-stage axial turbine (gas generator) ; 1-stage (free power turbine) - generator drive at 4:1 ratio
* Fuel type: Aviation Kerosene such as JP-4

**Performance**

* Maximum power output: 75 kW (100 shp) at 37,000 rpm or 60 kW DC from TCP-24 electric generator at 9,250 rpm gearbox output
* Overall pressure ratio: 3.15:1
* Air mass flow: 1.75 kg/s (231 lb/min) at 37,000 rpm
* Fuel consumption: 120 kg/h (260 lb/h) maximum
* Power-to-weight ratio: 0.51 kW/kg (0.31 shp/lb)
