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04-01-2010, 04:07 PM
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#1 |
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Senior Member
Join Date: Apr 2009
Location: Omaha, NE
Posts: 703
Likes: 206
Liked 93 Times in 52 Posts
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Re: how to find or calculate density altitude ...
Yes. You can google the calculations. I believe you'll also need to calculate pressure altitude.
Or -- pickup a Kestrel 4250 for $259 if all you want is DA. http://cgi.ebay.com/Kestrel-4250--Ra...22161002r14155 |
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04-01-2010, 04:18 PM
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#2 |
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VIP Member
Join Date: Feb 2003
Location: Mesa, Arizona
Posts: 3,048
Likes: 712
Liked 1,608 Times in 585 Posts
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Re: how to find or calculate density altitude ...
If you a an iPod phone, there is an application for it:
http://itunes.apple.com/us/app/densi...313097113?mt=8 or DA= 145442.16 X [ 1- (17.326 x Pa) / Tr ] 0.235 where: * DA* = density altitude, feet * Pa = actual pressure (station pressure), inches Hg * Tr = temperature, deg R (deg F + 459.67) |
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04-01-2010, 04:29 PM
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#3 |
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VIP Member
Join Date: Jun 2002
Location: New Holland, PA Mooresville,NC
Posts: 1,163
Likes: 249
Liked 16 Times in 11 Posts
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Re: how to find or calculate density altitude ...
Go to a aircraft surplus and get an Altimeter with a barometer window, less than $100 and dam close. Seen them in tool boxes everywhere, some folks dont know what they are looking at.
__________________
Bob Pagano A/SA |
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04-01-2010, 06:37 PM
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#4 | |
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Member
Join Date: Jan 2005
Location: North Massapequa, NY
Posts: 218
Likes: 0
Liked 0 Times in 0 Posts
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Re: how to find or calculate density altitude ...
Quote:
http://www.campmor.com/outdoor/gear/Product___89661 Last edited by L79racer; 04-01-2010 at 06:41 PM. |
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04-01-2010, 06:39 PM
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#5 |
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Member
Join Date: Jan 2005
Location: North Massapequa, NY
Posts: 218
Likes: 0
Liked 0 Times in 0 Posts
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Re: how to find or calculate density altitude ...
another one.
http://www.campmor.com/outdoor/gear/Product___85329 Last edited by L79racer; 04-01-2010 at 06:42 PM. |
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04-01-2010, 07:17 PM
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#6 |
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VIP Member
Join Date: Mar 2010
Location: Newport News, VA
Posts: 1,435
Likes: 371
Liked 129 Times in 59 Posts
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Re: how to find or calculate density altitude ...
Another tool is the Hot Rod Calc which was designed by Calculated Industries and advertised on the NHRA.com homepage. It's a hand-held calculator which has pre-programmed automotive formulas that were designed for drag racers. I've found it useful to calculate basic ET predictions and horsepower estimates. It's now available from Mr. Gasket as Model 8703 for $79.95.
__________________
Lew Silverman #2070 "The Wagon Master" N/SA |
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