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pj.ladd(at)btinternet.com
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Posted: Wed Jun 17, 2009 10:05 am Post subject: ASI

Re pitot.

  

 Thanks Rick.  Having thought it through I had  decided that there must be an internal tube involved.

  

 Thanks for the drawing. Pretty neat. Too tricky for  me to get involved with.

  

 I remember that many years ago there was an English  Ccompany called Ackles and Pollocks who specialised in small tubes. An foreign  company sent them the smallest tube which they manufactured with a note "Beat  that".

  

 A and P sent it back with their own product inside  it.

  

 I will contact them (If they still  exist)

  

 Thanks  Rick and John.

  

 Pat 

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Dana

Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA

Posted: Wed Jun 17, 2009 5:54 pm Post subject: Re: ASI

When I made a new pitot tube for my UltraStar, I made a concentric pitot/static tube.  The inner tube the original 1/4" aluminum tube that was on the plane when I bought it, but i added an outer tube of 3/8" diameter brass with four small holes in the middle, tapered bushings at each end of the outer tube, and a small brass tube soldered to attach the static line.  It works much better than having the static air just venting inside the instrument pod as the previous owner had it (every time I moved my foot the reading would change!)



It's still not entirely accurate, and I don't know why.  At 30-35 mph it seems correct, according to averaged GPS readings upwind and downwind... but at 45 mph indicated (level flight at 5800 cruise) the averaged GPS readings are more like 55 mph.



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pj.ladd(at)btinternet.com
Guest

Posted: Thu Jun 18, 2009 1:22 am Post subject: ASI

Hi Dana,

very neat job.



I envy you your ability to work in metal. I grew up in a timber yard and can 

make a reasonable joint in wood but never had any metalwork training. 

Welding and stuff is a mystery to me. I might just about make a soldered 

joint if pushed but thats it.



Nevertheless I know a man who can do some stuff in metal and I might try 

that if the other simpler suggestions for a mod to my piot don`t work.



Grotty weather day today. Just off to repair the wooden floor to my hangar

Thanks



Pat

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pj.ladd(at)btinternet.com
Guest

Posted: Thu Jun 18, 2009 11:14 am Post subject: ASI

Aircraft Spruce lists a couple of the single tube  designs,>>

  

 Thanks Bill.

  

 Pat

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pj.ladd(at)btinternet.com
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Posted: Sun Jun 21, 2009 9:40 am Post subject: ASI

I lost your phone no,Call again when you`re  free..

  

 Hi Vince,

  

 01225 783450.

  

 Bloody annoyed at the moment. Been out on a Rotary  junket all day. I relised that Kemble Air Day was on but I have just heard the  the Vulcan was scheduled to be there.

 Damn and blast

  

 Pat

 



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slyck(at)frontiernet.net
Guest

Posted: Sun Jun 21, 2009 11:43 am Post subject: ASI

I understand completely.  I saw the Vulcan fly at Toronto a few years back.  Mighty impressive.Nothing like it.  

BB



On 21, Jun 2009, at 1:39 PM, pj.ladd wrote:

 	  Quote: 	
		    I lost your phone no,Call again when you`re free..

 

Hi Vince,

 

01225 783450.

 

Bloody annoyed at the moment. Been out on a Rotary junket all day. I relised that Kemble Air Day was on but I have just heard the the Vulcan was scheduled to be there.

Damn and blast

 

Pat

 	  Quote: 	
		  http://www.matronics.com/Navigator?Kolb-List

href="http://forums.matronics.com">http://forums.matronics.com

href="http://www.matronics.com/contribution">http://www.matronics.com/contribution



	
	


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pj.ladd(at)btinternet.com
Guest

Posted: Tue Jun 23, 2009 1:47 am Post subject: ASI

I saw the Vulcan fly at Toronto  >>

  

 Hi Bob,

 An incredible a/c. I saw her first at Farnborough  Airshow. During the previous years there had been a series of small, similarly  shaped single seaters built to explore the delta wing characteristics(It was a  long time ago) but on this occasion the three single seaters flew escort to this  massive bomber.

 The flight was first seen at long distance as they  waited for their display entrance, Just glimpsed through the clouds. It reminded  me of that scene in `Shape of things to come` when the first flying machine seen  for years flies over the settlement. Heart stopping!  When the Vulcan,  which hardly anyone  knew existed, barrelled down the runway at nought feet  with the afterburners roaring. WOW!

 When the Vulcan went to the States to take part in  the bombing competitions, which it won, the US put up an intercept shield. The  Vulcan crossed the coast, went knap of the earth, and no one saw her again until  she popped up to circuit height at the destination field.

 Read Vulcan 403 (I think) for the story of how we  managed to bomb the Stanley airfield during the Falklands disagreement. If the  Argies had left it another two weeks the last of the Vulcan fleet would have  been out of service. 

 No one had experience of accurate bombing as the  Vulcan was designed to drop an atomic bomb where accuracy was not required and  they had to dig out an old Lancaster pilot from WW2 to brief the crew. We  had no experience of long distance raids and had to cobble together a fleet of  tankers and the Vulcan refuelling probes didn`t fit the kit. Museums were raided  and probes pinched from displays .One bit of  kit was being used as an ashtray in the Officers mess at one airfield. Typical  Brit lash up and muddle through, but it worked. Just!

 The last remaining Vulcan is kept in the air by  volunteers and public gifts of money and she cannot go on indefinitely at around  a million pounds a year.

  

 Pat

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