PPRuNe Forums - View Single Post - SRS ( speed reference system ) ???
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Old 25th Sep 2009, 12:24
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CJ1234
 
Join Date: Feb 2008
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You've got it. That's all there is to it. It keeps you at V2 + 10 at takeoff (unless you have an engine failure, in which case you're limited either to your current speed provided it's below V2+15, or V2, whichever is higher).

SRS guidance means your initial climb is performed at a safe speed in case of engine failure. In such an emergency, it also means that the aircraft is guaranteed (!) a minimum vertical speed of +125fpm. It also provides attitude protection to avoid nose-up effect during the takeoff, which could be very dangerous. (it limits to 18degrees or 22.5 degrees if there's windshear.)

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