Ivchenko AI-9
{{Short description|1960s Soviet aircraft auxiliary power unit}}
| {{Infobox aircraft begin
| name=AI-9 | image=File:Engine AI9-3B.JPG | caption=AI9-3B }}{{Infobox aircraft engine |type=Auxiliary Power Unit (APU) |manufacturer=Ivchenko / Ivchenko-Progress / Motor Sich |designer= |national origin=USSR |first run=1966 |major applications=Antonov An-140 |produced= |number built= |program cost= |unit cost= |developed from= |variants with their own articles= }} |
The Ivchenko AI-9 is an aircraft auxiliary power unit developed and produced by Ivchenko-Progress and Motor Sich.{{Cite web|url=http://www.motorsich.com/eng/products/aircraft/auxiliary/ai-9/|title=AI-9 - Motor Sich|last=Il'yashenko|first=Matviy|website=www.motorsich.com|access-date=2016-11-22|archive-date=2017-01-10|archive-url=https://web.archive.org/web/20170110101016/http://www.motorsich.com/eng/products/aircraft/auxiliary/ai-9/|url-status=dead}}
Variants
;AI-9: The base model which is used to supply compressed air to air-start systems. It can also be used as cabin heating if necessary.
;AI-9V: A variant of the base model that is used to supply compressed air to air-start systems and air conditioning. It also supplies electricity to on-board electrical systems with a 3 kW generator.{{Cite web|url=http://www.motorsich.com/eng/products/aircraft/auxiliary/ai-9v/|title=AI-9V - Motor Sich|last=Il'yashenko|first=Matviy|website=www.motorsich.com|access-date=2016-11-22|archive-date=2017-01-10|archive-url=https://web.archive.org/web/20170110101022/http://www.motorsich.com/eng/products/aircraft/auxiliary/ai-9v/|url-status=dead}}
;AI9-3B:The AI9-3B is used to provide air to engines and air conditioning systems and provide electricity to on-board electrical systems.{{Cite web|url=http://www.motorsich.com/eng/products/aircraft/auxiliary/ai9-3b/|title=AI9-3B - Motor Sich|last=Il'yashenko|first=Matviy|website=www.motorsich.com|access-date=2016-11-22|archive-date=2017-01-12|archive-url=https://web.archive.org/web/20170112061832/http://www.motorsich.com/eng/products/aircraft/auxiliary/ai9-3b/|url-status=dead}}
Specifications (AI-9)
{{jetspecs
|ref=Aircraft engines of the World 1970{{cite book |last=Wilkinson |first=Paul H. |title=Aircraft engines of the World 1970 |year=1970 |publisher=Paul H. Wilkinson |location=Washington D.C. |edition=21st |page=216 }}
|type=Auxiliary Power Unit (APU)
|length={{cvt|740|mm}}
|diameter={{cvt|500|mm}} casing diameter
|weight={{cvt|45|kg}}
|compressor=1-stage centrifugal compressor
|combustion=Annular combustion chamber with 6 fuel injectors
|turbine=1-stage axial turbine (gas generator)
|fueltype=Aviation Kerosene such as JP-4
|oilsystem=
|power={{cvt|75|hp|order=flip}} (air hp) at 38,500 rpm or {{cvt|0.4|kg/s}} of compressed air at {{cvt|35|psi|bar|order=flip}}
|thrust=
|compression=2.8:1
|bypass=
|aircon={{cvt|1.5|kg/s}} at 38,500 rpm
|turbinetemp=
|fuelcon={{cvt|120|kg/h}} maximum
|specfuelcon=
|power/weight={{cvt|0.75|hp/lb|order=flip}} (air hp)
|thrust/weight=
}}
References
{{Commons category}}
{{Reflist}}
{{Ivchenko aeroengines}}