Aces High Bulletin Board

General Forums => Aircraft and Vehicles => Topic started by: frank3 on November 25, 2003, 12:23:06 PM

Title: Climbrate Question
Post by: frank3 on November 25, 2003, 12:23:06 PM

I always had this question in mind;

When climbing with 1000ft/min and at a speed of 150 mph, you get 1000ft higher in 1 minute, that's obvious.
But what if you were doing 250 mph, doesn't that get you 1000ft higher in less then 1 minute?
If this is true the climbrate meter wouldn't be correct would it?

(http://www.onpoi.net/ah/pics/users/ah_68_1069784458.jpg)

Title: Climbrate Question
Post by: ra on November 25, 2003, 12:26:41 PM

VSI reading 1000 ft/min = 1000/ft/min, no matter what your ASI is reading.  They measure 2 different things.

Title: Climbrate Question
Post by: hitech on November 25, 2003, 12:35:18 PM

VSI is the vertical line not the angle.
Redraw your diagram with 2 lines of the triange. One beeing speed the other vsi. Do it both for 150 and 250 and you will see the angle changes.

HiTech

Title: Climbrate Question
Post by: OIO on November 25, 2003, 12:38:33 PM

the n1k FM revealed. awesome diagram man :aok

(j/k) ;)

Title: Climbrate Question
Post by: frank3 on November 26, 2003, 09:38:06 AM

Ah! now I see, tnx chaps!

wow! I got a reply from HiTech! :eek:

Title: Climbrate Question
Post by: frank3 on November 27, 2003, 07:25:48 AM

Btw, it was just a quick draw, didn't do any measurements to draw it