747-400 APU section
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Join Date: Jun 2001
Location: Above 30,000 ft
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747-400 APU section
bit of trivia here, but anyone know why the 747-400 APU section is not manufactured with flushed rivets whereas the rest of the fuselage is? what'd be the fuel penalty?
Join Date: Oct 2006
Location: berkshire
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the boundry layer of air after travelling the full lenght of the fuselage would be very thick by the time it reaches the APU section, so do not need flush rivets so much. APU section is not pressurised so the metal skin does not need to be thick, and is hard to put counter sunk flush rivets into a thin skin.
Join Date: May 2002
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APU section is not pressurised so the metal skin does not need to be thick, and is hard to put counter sunk flush rivets into a thin skin.
