Air Starter Unit to supply air conditioning packs on ground
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Air Starter Unit to supply air conditioning packs on ground
Hello,
Is it possible to use an Air Starter Unit to supply the packs? Or does it connect to a specific port on the engines and it is not linked to the aircraft pneumatic system?
To be more specific: I've seen an air starter unit that provides 42 PSI which is the same pressure that is supplied from the APU to the packs on the B737. I would like to know if I can use the starter unit to operate the packs on ground for extended time, so that I don't need to start the APU instead.
Thanks
Is it possible to use an Air Starter Unit to supply the packs? Or does it connect to a specific port on the engines and it is not linked to the aircraft pneumatic system?
To be more specific: I've seen an air starter unit that provides 42 PSI which is the same pressure that is supplied from the APU to the packs on the B737. I would like to know if I can use the starter unit to operate the packs on ground for extended time, so that I don't need to start the APU instead.
Thanks
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Would an ASU have the same oil contamination standards as a set designed specifically for air conditioning?
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I'm not sure it is as straight forward as that. The ASUs we use for supplying the packs have a separate selection for air con or engine start. I'm guessing the compressor must have to be rated or controlled to supply a slightly lower pressure over a longer period of time compared to engine start pressure for a minute or two?