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Flap control suggestions

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gilles.thesee(at)free.fr
Guest

Posted: Fri Feb 10, 2017 12:55 am Post subject: Flap control suggestions

Hi all,



What would be your suggestion for a landing flap control box, module etc. ?



My partners would prefer a system with a three or four positions 

lever/toggle directly commanding the flap position, like "retracted", 

"takeoff", "land" etc.



Any ideas about a supplier, any feedback ?

Thanks in advance,



-- 

Best regards,

Gilles

http://contrails.free.fr

http://lapierre.skunkworks.free.fr

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user9253

Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan

Posted: Fri Feb 10, 2017 7:49 am Post subject: Re: Flap control suggestions

ELECTRONIC FLAP ACTUATOR / INDICATOR

from Aircraft Spruce

http://www.aircraftspruce.com/catalog/elpages/electronicsflapcontroller.php

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_________________
Joe Gores

nuckolls.bob(at)aeroelect
Guest

Posted: Fri Feb 10, 2017 5:29 pm Post subject: Flap control suggestions

At 02:51 AM 2/10/2017, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: GTH <gilles.thesee(at)free.fr>



 Hi all,



 What would be your suggestion for a landing flap control box, module etc. ? 	


   How about a spring loaded, (retract)-OFF-(extend) switch?

   The only time flap position indicator were required

   was on aircraft where the airplane might become 

   unmanageable if flaps were extended too far for some

   flight condition -AND- the flaps could not be directly

   observed by the pilot.



   I can't ever recall using a flaps position indicator

   to drive flaps to a 'precise' position during any

   phase a flight. A few dozen approach/landing

   cycles would pretty well calibrate the stick-feel

   for positioning flaps without bringing your eyes

   inside the cockpit -or- visually confirming the

   flap position.



   Some models of Cessna were fitted with flaps that

   could be extended to 40 degrees. There WERE situations

   where the airplane would not sustain level flight

   with fully extended flaps and we were taught to make a

   final approach at 30 and not to go all the way until you were

   committed to land.



   A A/D against those airplanes restricted flap travel

   to 30 degrees after too many pilots got into a bind

   with too aggressive application of flaps.



   But those are RARE and if your project is at risk for

   such a condition, the kit manufacturer and/or owners

   of said aircraft will certainly know about it.



   Aside from those rare designs, the simple toggle switch

   teamed with limit switches and perhaps some robust

   SPDT relays is cheap, simple, and very low risk for

   un-intended motion of flaps. I'm certain that you'll

   discover that a flap position indicator is among the

   least useful displays on the panel.



 

  http://tinyurl.com/nhftedq 



 



 

   Bob . . .

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jonlaury

Joined: 06 Nov 2006
Posts: 336

Posted: Sat Feb 11, 2017 9:32 am Post subject: Re: Flap control suggestions

I have limited flight time with this http://www.aircraftextras.com/FPS-Plus-nt.htm unit, but I'm pleased with it so far. It's programmable so you can find the flap settings that work best for your plane and loading and set them as a pre-selected positions (3). Go to max/no flap by holding the switch down/up  for 1 second. Very intuitive to use and it integrated easily into my AF 4500 panel. The AF panel indicator is pretty small scale but is useful in my scan to just to note when flaps are deployed (like if I forget to raise them). Wired with a back-up overide switch in the event of unit malfunction.

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Mauledriver(at)nc.rr.com
Guest

Posted: Sat Feb 11, 2017 12:15 pm Post subject: Flap control suggestions

I've been using TCW's Intellignet         Flap Controller and have been happy with it.  I use it with       a switch where the up position takes it all the way to reflex and       each momentary touch of the downs switch takes it from reflex to       zero to first position down to full down.

       

       Regarding flap position; I decided to just look out the window and       that has worked well for me.

       

       Bill

       On 2/10/2017 3:51 AM, GTH wrote:

     

      	  Quote: 	
		  --> AeroElectric-List message posted by: GTH       <gilles.thesee(at)free.fr> (gilles.thesee(at)free.fr)       

       

       Hi all,       

       

       What would be your suggestion for a landing flap control box,       module etc. ?       

       

       My partners would prefer a system with a three or four positions       lever/toggle directly commanding the flap position, like       "retracted", "takeoff", "land" etc.       

       

       Any ideas about a supplier, any feedback ?       

       

       

       Thanks in advance,       

       

     	
     



            	 		 			 				 			 		 		 			

 				This email has been checked for viruses by Avast antivirus software. 				

www.avast.com

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alec(at)alecmyers.com
Guest

Posted: Sat Feb 11, 2017 12:35 pm Post subject: Flap control suggestions

For comparison purposes only, you may wish to consider FAR 23.699:



Sec. 23.699 — Wing flap position indicator.



There must be a wing flap position indicator for—

(a) Flap installations with only the retracted and fully extended position, unless—

(1) A direct operating mechanism provides a sense of “feel” and position (such as when a mechanical linkage is employed); or

(2) The flap position is readily determined without seriously detracting from other piloting duties under any flight condition, day or night; and



(b) Flap installation with intermediate flap positions if—

(1) Any flap position other than retracted or fully extended is used to show compliance with the performance requirements of this part; and

(2) The flap installation does not meet the requirements of paragraph (a)(1) of this section.



Both Cessna and Piper single engine aircraft intermediate flap settings so are covered by (b)(1) above, so unless they meet (a)(1) (Piper aircraft and early Cessnas with Johnson bar flap operation) they need position indicators.



http://www.risingup.com/fars/info/part23-699-FAR.shtml



On 11Feb2017, at 2:24 AM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com> wrote:



At 02:51 AM 2/10/2017, you wrote:

 	  Quote: 	
		   

 

 Hi all,

 

 What would be your suggestion for a landing flap control box, module etc. ?


	


  How about a spring loaded, (retract)-OFF-(extend) switch?

  The only time flap position indicator were required

  was on aircraft where the airplane might become 

  unmanageable if flaps were extended too far for some

  flight condition -AND- the flaps could not be directly

  observed by the pilot.



  I can't ever recall using a flaps position indicator

  to drive flaps to a 'precise' position during any

  phase a flight. A few dozen approach/landing

  cycles would pretty well calibrate the stick-feel

  for positioning flaps without bringing your eyes

  inside the cockpit -or- visually confirming the

  flap position.



  Some models of Cessna were fitted with flaps that

  could be extended to 40 degrees. There WERE situations

  where the airplane would not sustain level flight

  with fully extended flaps and we were taught to make a

  final approach at 30 and not to go all the way until you were

  committed to land.



  A A/D against those airplanes restricted flap travel

  to 30 degrees after too many pilots got into a bind

  with too aggressive application of flaps.



  But those are RARE and if your project is at risk for

  such a condition, the kit manufacturer and/or owners

  of said aircraft will certainly know about it.



  Aside from those rare designs, the simple toggle switch

  teamed with limit switches and perhaps some robust

  SPDT relays is cheap, simple, and very low risk for

  un-intended motion of flaps. I'm certain that you'll

  discover that a flap position indicator is among the

  least useful displays on the panel.

http://tinyurl.com/nhftedq 



  Bob . . .

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gilles.thesee(at)free.fr
Guest

Posted: Wed Feb 15, 2017 9:12 am Post subject: Flap control suggestions

Le 11/02/2017 à           21:08, Bill Watson a écrit :

         

      	  Quote: 	
		                 I've been using             TCW's Intellignet               Flap Controller and have been happy with it.  I use it             with a switch where the up position takes it all the way to             reflex and each momentary touch of the downs switch takes it             from reflex to zero to first position down to full down.

           

       

     	
     

     Thank you everyone for your suggestions.

     I've passed them on to my partners.

     

     

     -- 

       Best regards,

       Gilles

       http://contrails.free.fr

       http://lapierre.skunkworks.free.fr

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