PPRuNe Forums - View Single Post - Pressue differential

21st March 2006 | 15:51

#6 (permalink)

Three Blades

Joined: Jan 2005

Posts: 189

Likes: 0

From: UK

For a very rough answer only:
1) Sea level is 1000mb
2) Pressure falls by 1mb for every 30'
So for 10k' the pressure will be 330 (to 2 sig figs) less than 1000 = 670