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AeroElectric-List: Re: Source for Relay â?" DPDT (On) Off (O

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mrspudandcompany(at)veriz
Guest

Posted: Sun Dec 29, 2013 1:49 pm Post subject: AeroElectric-List: Re: Source for Relay â?" DPDT (On) Off (O

 	  Quote: 	
		  >The good things the VPX does for flap control is not allow deployment 

>above the maximum flap extended speed


	


 	  Quote: 	
		      No special changes needed. The wiring shown is

    what I suggested earlier . . . a pair of spdt

    relays for extend, retract and dynamic braking.


	




        I believe that you could add the feature of not deploying the flaps 

above a given airspeed by adding a pressure switch activated by the pito air 

pressure system.  This would be a normally closed switch inserted in series 

between the flap down position switch and its relay.  It will then be 

adjusted to open at the maximum flap deployment speed.  With this mod you 

can retract the flaps above the max deployment speed but would be unable to 

deploy at the high speed.



Roger

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Valin

Joined: 13 Apr 2010
Posts: 31
Location: Colorado

Posted: Sun Dec 29, 2013 4:15 pm Post subject: AeroElectric-List: Re: Source for Relay â?" DPDT (On) Off (O

Thanks Roger, that is a viable approach for that feature without the VPX.  What I like about the VPX flap control most is just pressing the flap button and it automatically moving to the next programmed flap extension setting.  The Legacy circuitry doesn't have that so pilots hold the flap's momentary switch until they get the setting they'd like.

 

Thanks again,

 

Valin

 

 

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