PPRuNe Forums - View Single Post - Shear Section In The Drive Shaft Gearbox Component???
Old 11th April 2006 | 02:36
  #10 (permalink)  
AeroTech
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Joined: Jun 2005
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From: USA
Hi,

Thank you for posts.

Originally posted by Bolty McBolt
NO its has nothing to do with ETOPS.
A De-oil solenoid is even on a Garret 660 its purpose is to allow a cold soaked APU to start.
I am not postulating, here what I know According to some forums:
In long ETOPS flights (207 or 180 minutes), the APU is cold soaked after long flight and may not start at high altitudes, therefore certain APUs are fitted with such devices to allow cold soaked APU to start. (it will be nice if someone can enlight me regarding such devices in ETOPS APUs in 777, A 330, 767,...)

-May be these de-oil solenoids are also fitted in APUs that usually operate in cold airports?

Barit1, may be no indication of N2 & oil pressure ?

aintsaying, what are gearbox components (IDG, IDG,...) that are fitted with shaft shear section?

Feedback appreciated. Thank you.
Best regards.
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