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Thread: Why does the altimeter use a coarse and fine synchro ?
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Old 1st November 2009 | 22:55
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doppleganger
 
Joined: Dec 2007
Posts: 19
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From: UK
In very basic terms, the coarse synchro is for high rates of climb, the fine synchro is for fine tuning when the aircraft levels off. Really more applicable to fighters which are likely to climb at very high rates, faster than a single synchro could cope.

This page should explain it.

DUAL-SPEED SYNCHRO SYSTEM
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