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PostPosted: Sat Jun 18, 2005 8:23 pm 
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Joined: Sun Apr 21, 2002 2:03 am
Posts: 147
Location: Montreal Quebec
I have this Radio Altimeter on my Dreamfleet Bonanza and I can't figure out what's it's for.

Anyone....



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Ron Lefebvre
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PostPosted: Tue Jun 21, 2005 1:17 am 
I do believe it is to tell you the distance between aircraft and the ground below you. Very practical in low vis situations.


  
 
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PostPosted: Tue Jun 21, 2005 2:13 am 
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Joined: Thu Dec 28, 2000 2:25 am
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Location: Vancouver
I liken it to depth finder on a boat, where the signal gives you a positive distance between the sender and the ground. This is more accurate than the altimeter.



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PostPosted: Fri Jun 24, 2005 3:20 am 
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Location: Montreal Quebec
If it's so good, why is it not the default instead of the Altimeter cage.

Not arguing, just trying to figure it all out.



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PostPosted: Fri Jun 24, 2005 5:20 am 
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Location: Prince George, B.C.
I was going to copy and paste the info I had found, but figured I'd be breaking copyright laws, so just go to this link...it has an exellent explaination of the differance..

http://www.infoplease.com/ce6/sci/A0803522.html



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PostPosted: Fri Jun 24, 2005 4:01 pm 
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Joined: Sat Jul 13, 2002 4:56 am
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Location: Moose Jaw, SK
Using it as the default would be a bad thing...

To my way of thinking, especially in approach and departure scenarios, with crowded skies and aircraft climbing and descending, ATC and the pilots would want to maintain a CONSTANT altitude, not an arbitrary one based on what's below you at any given moment.

I believe the operative words in the link James posted is "ground and obstacle clearance". For maintaining vertical seperation of aircraft, barometric altimeters are more prefered.

Cheers!



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PostPosted: Sat Jun 25, 2005 12:51 pm 
I prefer to use both, Altimeter for flying at a given level, Radio altimeter for final and landing. Helicopters like to have that info while in a hover if your carrying cargo on a sling etc...


  
 
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