PDA

View Full Version : Airspeed Question

XyZspineZyX
11-04-2003, 01:58 PM
S!

Can someone explain me the difference between indicated & true airspeed? I understand that there's a little difference at various altitudes.

& further: Is there a way to calculate relative groundspeed when you know your altitude & airspeed?

S!

M0NS (authorized P39 pyrotechnician)

"Blow up the outside world"

http://www.flugwerk.de/images/01k.jpg
My garage!

XyZspineZyX
11-04-2003, 01:58 PM
S!

Can someone explain me the difference between indicated & true airspeed? I understand that there's a little difference at various altitudes.

& further: Is there a way to calculate relative groundspeed when you know your altitude & airspeed?

S!

M0NS (authorized P39 pyrotechnician)

"Blow up the outside world"

http://www.flugwerk.de/images/01k.jpg
My garage!

XyZspineZyX
11-04-2003, 02:22 PM
M0NS wrote:
- S!
-
- Can someone explain me the difference between
- indicated & true airspeed? I understand that there's
- a little difference at various altitudes.

Here is an explaination:

http://stoenworks.com/Tutorials/Understanding%20airspeed.html

- & further: Is there a way to calculate relative
- groundspeed when you know your altitude & airspeed?

As the above link shows, you need more data than just altitude and IAS. There are a few calulator utilities on the net that do it, but I don't know how accurately.

Anyway, hope this helps /i/smilies/16x16_smiley-happy.gif

"As weaponry, both were good, but in far different ways from each other. In a nutshell, I describe it this way: if the FW 190 was a sabre, the 109 was a florett, or foil, like that used in the precision art of fencing." - Gunther Rall

XyZspineZyX
11-04-2003, 04:02 PM
Thx m8 /i/smilies/16x16_smiley-wink.gif - that pretty much explains what I wanted to know. You wouldn't know of a chart or something?

S!

M0NS (authorized P39 pyrotechnician)

"Blow up the outside world"

http://www.flugwerk.de/images/01k.jpg
My garage!

XyZspineZyX
11-04-2003, 04:19 PM
M0NS wrote:
- Thx m8 /i/smilies/16x16_smiley-wink.gif - that pretty much
- explains what I wanted to know. You wouldn't know of
- a chart or something?
-
- S!
-
- M0NS (authorized P39 pyrotechnician)
-
-
-
- "Blow up the outside world"

No problem, mate /i/smilies/16x16_smiley-happy.gif

here is a TAS calculator thing if it helps:

http://www.csgnetwork.com/tasinfocalc.html

It has conversion so you can put your kph/mph into knots.

Have fun /i/smilies/16x16_smiley-wink.gif

NegativeGee (Freelance FW Fieldplough)

"As weaponry, both were good, but in far different ways from each other. In a nutshell, I describe it this way: if the FW 190 was a sabre, the 109 was a florett, or foil, like that used in the precision art of fencing." - Gunther Rall

XyZspineZyX
11-04-2003, 07:43 PM
Great! - you're da man /i/smilies/16x16_smiley-wink.gif Thx & most appreciated.

CU in the sky.

S!

M0NS (authorized P39 pyrotechnician)

"Blow up the outside world"

http://www.flugwerk.de/images/01k.jpg
My garage!