Density Altitude Calculation?

[richblake74]

A strange question but I know someone will know this.
I am trying to come up with a Formula for Density Altitude..

DA = density altitude in feet
P0 = atmospheric (static) pressure
PSL = standard sea level atmospheric pressure (101.325 kPa)
T = true (static) air temperature in kelvins (K) [add 273.15 to the Celsius (°C)] figure
TSL = standard sea level air temperature (288.15 K)
b = 0.235

Is there anyone aware of a formula, that can be used on excel for this problem?

I cannot seem to post the formula.

Just a stab in the Dark here.
Merry Xmas to you all...

 

[JB_Scotland]

Pleased to help, I'm no guru and have to look these things up too.

So long as my jet stays flying I'm happy. I used to fly helicopters where DA limits were critical and the "Hot" element of "Hot and High" was a significant factor so we used to do the heavy lifts in the cool of the day when operating at high altitude to give ourselves more power and control margin.

 

[RadioSaigon]

Likewise. I'm working in West Paua, Indonesia where "hot & high" is the norm... so I tend to be very interested in DA, Slope, Length and Load especially on the barely prepared, sub-600m, 10°+ slope strips we frequent! I'm slab-wing rather than fling-wing too. This tends to be a very unregulated environment with little to no oversight, information or assistance, so helping yourself indeed helps others.

again, thanks for the assist!