Ground School: How to Calculate Density Altitude

[viruslived]

"Because batteries can fail in an electronic flight computer"... Gotta love that response.

[PaulUmbarger]

JUST FOR CHUCKLES: Take the temp in F, subtract 30, divide the answer for temp in C. If it's 100F - 30 = 70 / in half = 35. You'll be within spitting distance of the accurate Celsius temp every time!

[balajinaidoo]

there is a very complicated formula of calculating without the computer

does anyone knw that??

[pjholl]

It's not that complicated.

1) Find the ISA temperature at the alt in question

2) Work out the difference between actual temp and ISA temp

3) adjust the alt by 120ft for every 1deg deviation from ISA temp.

4) add/subtract 3) from pressure alt 1) to get density alt.

DA = PA + (120 Vt)

-> density alt = pressure alt +/- (120ft x temp deviation from ISA)

[YYZZZYYY]

Let's say you loose your extra battery for your flight computer, the pilot should know how to use the standard cardboard/metal E6B. It never runs out of batteries and it keeps you fresh and understanding what your converting.

[ojoell]

At about 3:30 a student asks if they let them use an electronic computer. I was under the impression that you could use an electronic one. I always carry extra batt. when I fly. Let me know. Great videos from ya though.

[MisturEff]

Probably best to use an electronic computer, along with extra batteries and a manual cardboard one just in case.

[esh1]

this is a really good video, exactly what i was looking for. thanks 5*

are you going to be posting more??