« previous next »
Pages: [1]   Go Down

Author Topic: Density Altitude Formula?  (Read 796 times)

Offline Strip

  • Gold Member
  • *****
  • Posts: 3319
Density Altitude Formula?
« on: March 04, 2010, 11:14:45 AM »
Can I compute the corrected density altitude, ie DA corrected for relative humidity?

If I know...

Barometer
Temperature
Humidity

If not what other data do I need to know?

This is going to be going into an excel program and I need to know the formula. Everything I have found online has been calculated as dry air. I have figured out that formula in excel but I want a little more accuracy. Forgive me if I used the wrong terminology though.....

Thanks,
Strip
Logged

Offline AKHog

  • Nickel Member
  • ***
  • Posts: 521
Re: Density Altitude Formula?
« Reply #1 on: March 04, 2010, 11:47:25 AM »
« Last Edit: March 04, 2010, 11:57:01 AM by AKHog »
Logged
The journey is the destination.

Offline Strip

  • Gold Member
  • *****
  • Posts: 3319
Re: Density Altitude Formula?
« Reply #2 on: March 04, 2010, 12:10:01 PM »
Always one in the crowd....

Quote from: Strip on March 04, 2010, 11:14:45 AM
This is going to be going into an excel program and I need to know the formula. Everything I have found online has been calculated as dry air.

Again, I need the formula, not a calculator, and the formula needs to be in corrected DA. Everything I found on Google fits only one of those criteria. I have already looked at five of the first ten searches your entry gave me. Two hours of searches later I have five DA formulas, none accounting for humidity though.

Strip
Logged

Offline CAP1

  • Radioactive Member
  • *******
  • Posts: 22287
      • The Axis Vs Allies Arena
Re: Density Altitude Formula?
« Reply #3 on: March 04, 2010, 01:30:09 PM »
Logged
ingame 1LTCAP
80th FS "Headhunters"
S.A.P.P.- Secret Association Of P-38 Pilots (Lightning in a Bottle)

Offline batch

  • Nickel Member
  • ***
  • Posts: 640
Re: Density Altitude Formula?
« Reply #4 on: March 04, 2010, 03:35:50 PM »
the first link is all ya need............ took me 10 seconds to find it ........ has both formulas dry/humid

http://lmgtfy.com/?q=density+humid+air+formula+wiki
Logged
"theres nothin like wakin up with a Dickens Cider" - Dickens Fruit Stand

Offline CAP1

  • Radioactive Member
  • *******
  • Posts: 22287
      • The Axis Vs Allies Arena
Re: Density Altitude Formula?
« Reply #5 on: March 04, 2010, 06:23:45 PM »
Quote from: batch on March 04, 2010, 03:35:50 PM
the first link is all ya need............ took me 10 seconds to find it ........ has both formulas dry/humid

http://lmgtfy.com/?q=density+humid+air+formula+wiki

well, i have an idea of what he's lookin for......but i used to have a small "computer" that constantly measured the temp conditions, and it would give me the da,
Logged
ingame 1LTCAP
80th FS "Headhunters"
S.A.P.P.- Secret Association Of P-38 Pilots (Lightning in a Bottle)
Pages: [1]   Go Up
« previous next »