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Ergonomics (was: Flap switches/relay wiring)

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N6030X(at)DaveMorris.com
Guest

Posted: Wed Aug 23, 2006 4:46 am Post subject: Ergonomics (was: Flap switches/relay wiring)

How about putting the starter switch on the throttle, so you can do 

an in-flight restart without taking your hands off the sticks and throttle.



Dave Morris



At 07:22 AM 8/23/2006, you wrote:

[quote]



Given that this started as a discussion of the hazards of having the flap

control mounted on the stick, wouldn't mounting the speed brake control on

the stick pose a similar hazard?

--

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Gilles.Thesee(at)ac-greno
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Posted: Wed Aug 23, 2006 5:07 am Post subject: Ergonomics (was: Flap switches/relay wiring)

Hi Dave,

 	  Quote: 	
		  



 How about putting the starter switch on the throttle, so you can do an 

 in-flight restart without taking your hands off the sticks and throttle.



Er, how many times in a flight do you restart your engine ?
	


The last time I had to was 16 years ago, when the prop stopped in a 

vertical manoeuver during an advanced aerobatic contest. And yes, 

reaching for the starter switch during the 4 Gs pull out proved an 

interesting exercice. No one noticed from the ground.



But what is the point in normal cases ?



One very good location for the starter switch, is near the fuel valve, 

with an arrangement such that the switch is covered by the valve handle 

when in the closed position. No starting with the fuel valve closed. The 

ubiquitous (in France) Robin DR400 have this feature.

PTT

Trims

Auto pilot disengage



That's all I see necessary on the throttle and stick in a civilian  

airplane.

Someone mentionned Intercom PTT, what's the use for such a device ?



Best regards,

Gilles

http://contrails.free.fr

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brian-av(at)lloyd.com
Guest

Posted: Wed Aug 23, 2006 5:47 am Post subject: Ergonomics (was: Flap switches/relay wiring)

On Aug 23, 2006, at 5:44 AM, Dave N6030X wrote:



 	  Quote: 	
		   

 <N6030X(at)DaveMorris.com>



 How about putting the starter switch on the throttle, so you can do  

 an in-flight restart without taking your hands off the sticks and  

 throttle.


	


How often do you expect to do this? How often might you do this by  

accident? What happens if you do this by accident? Given how  

infrequent its use would be I would think that leaving it on the  

panel is not a real problem.



BTW, I would add speed brakes to my list of things that should be on  

the throttle (stick-equipped aircraft with the throttle in your left  

hand) along with the radio and intercom PTTs.



Brian Lloyd                         361 Catterline Way

brian HYPHEN av AT lloyd DOT com    Folsom, CA 95630

+1.916.367.2131 (voice)             +1.270.912.0788 (fax)



I fly because it releases my mind from the tyranny of petty things . . .

— Antoine de Saint-Exupéry

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Gilles.Thesee(at)ac-greno
Guest

Posted: Wed Aug 23, 2006 5:55 am Post subject: Ergonomics (was: Flap switches/relay wiring)

 	  Quote: 	
		  



 BTW, I would add speed brakes to my list of things that should be on 

 the throttle (stick-equipped aircraft with the throttle in your left 

 hand) along with the radio and intercom PTTs.




	


Hi Brian,



Why a PTT for the intercom ?

Thanks,



Regards,

Gilles,

http://contrails.free.fr

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brian-av(at)lloyd.com
Guest

Posted: Wed Aug 23, 2006 6:05 am Post subject: Ergonomics (was: Flap switches/relay wiring)

On Aug 23, 2006, at 6:04 AM, Gilles Thesee wrote:



 	  Quote: 	
		   PTT

 Trims

 Auto pilot disengage



 That's all I see necessary on the throttle and stick in a civilian   

 airplane.'


	


I would put the PTT on the throttle and I would add the speed brake  

too. And you are right on the auto pilot disengage. That is one of  

the things I forgot and *must* be on the stick or yoke.



 	  Quote: 	
		   Someone mentionned Intercom PTT, what's the use for such a device ?


	


Some aircraft have such a high noise level that a voice-operated  

intercom won't work properly. You use a PTT to activated your mic  

into the intercom. Helicopters are known for this as are many  

military aircraft.



Brian Lloyd                         361 Catterline Way

brian HYPHEN av AT lloyd DOT com    Folsom, CA 95630

+1.916.367.2131 (voice)             +1.270.912.0788 (fax)



I fly because it releases my mind from the tyranny of petty things . . .

— Antoine de Saint-Exupéry

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Gilles.Thesee(at)ac-greno
Guest

Posted: Wed Aug 23, 2006 8:15 am Post subject: Ergonomics (was: Flap switches/relay wiring)

Brian,



 	  Quote: 	
		  

> Someone mentionned Intercom PTT, what's the use for such a device ?



 Some aircraft have such a high noise level that a voice-operated 

 intercom won't work properly. You use a PTT to activated your mic into 

 the intercom. Helicopters are known for this as are many military 

 aircraft.


	


Understand.

Thank you for responding.



Best regards,

Gilles,

http://contrails.free.fr

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