Simviation Forum - Conflicting Air Speed Indicator, (ASI), readings..

May 20^th, 2003 at 1:51pm

Fozzer Offline
Colonel
An elderly FS 2004 addict!
Hereford. England. EGBS.

Posts: 24861

Have you noticed that when observing your air speed indicator in the cockpit view, then swopping over to the default, 6 instrument view, (with the "W" key), for a better view of the runway ahead, that the two readings are different, sometimes as much as 20-40 knots difference....?
(The cockpit view readings are generally the higher of the two).

This raises problems in trying to calculate the real stall speed when flaring out for a landing... Shocked

....!!

(Note: when flying prop planes with conventional analogue instruments).

...any comments...?

(Note that both sets of instruments are reading true air speed in knots)...?

Cheers all...
Paul.
(England).

Dell Dimension 5000 BTX Tower. Win7 Home Edition, 32 Bit. Intel Pentium 4, dual 2.8 GHz. 2.5GB RAM, nVidia GF 9500GT 1GB. SATA 500GB + 80GB. Philips 17" LCD Monitor. Micronet ADSL Modem only. Saitek Cyborg Evo Force. FS 2004 + FSX. Briggs and Stratton Petrol Lawn Mower...Motor Bikes. Gas Cooker... and lots of musical instruments!.... ...!
Yamaha MO6,MM6,DX7,DX11,DX21,DX100,MK100,EMT10,PSR400,PSS780,Roland GW-8L v2,TR505,Casio MT-205,Korg CX3v2 dual manual,+ Leslie 760,M-Audio Prokeys88,KeyRig,Cubase,Keyfax4,Guitars,Orchestral,Baroque,Renaissance,Medieval Instruments.

Back to top

IP Logged

Reply #1 - May 20^th, 2003 at 3:39pm

Hagar Offline
Colonel
My Spitfire Girl
Costa Geriatrica

Posts: 33159

Fozzer. Which panels have you tried this with? If they're 3rd party panels I suspect the ASI gauge itself is a tad innacurate. The default gauges on the mini panel (& default panels) should be correct.

Founder & Sole Member - Grumpy's Over the Hill Club for Veteran Virtual Aviators
Member of the Fox Four Group

Need help? Try Grumpy's Lair

My photo gallery

Back to top

IP Logged

Reply #2 - May 20^th, 2003 at 4:09pm

Fozzer Offline
Colonel
An elderly FS 2004 addict!
Hereford. England. EGBS.

Posts: 24861

Quote:

Fozzer. Which panels have you tried this with? If they're 3rd party panels I suspect the ASI gauge itself is a tad innacurate. The default gauges on the mini panel (& default panels) should be correct.

Hi Hagar....
Thanks for the tip.
Actually all my planes are 3rd. party small prop planes, so that accounts for it...
I wonder why the designers don't match the 3rd. party/default instruments up together?
I wonder which I should rely on for accuracy, regarding stall speeds, my 3rd. party plane's gauge or the default 6 gauge layout..?

Cheers Doug... Grin

...!
Paul.
(England).

Dell Dimension 5000 BTX Tower. Win7 Home Edition, 32 Bit. Intel Pentium 4, dual 2.8 GHz. 2.5GB RAM, nVidia GF 9500GT 1GB. SATA 500GB + 80GB. Philips 17" LCD Monitor. Micronet ADSL Modem only. Saitek Cyborg Evo Force. FS 2004 + FSX. Briggs and Stratton Petrol Lawn Mower...Motor Bikes. Gas Cooker... and lots of musical instruments!.... ...!
Yamaha MO6,MM6,DX7,DX11,DX21,DX100,MK100,EMT10,PSR400,PSS780,Roland GW-8L v2,TR505,Casio MT-205,Korg CX3v2 dual manual,+ Leslie 760,M-Audio Prokeys88,KeyRig,Cubase,Keyfax4,Guitars,Orchestral,Baroque,Renaissance,Medieval Instruments.

Back to top

IP Logged

Reply #3 - May 20^th, 2003 at 4:25pm

Hagar Offline
Colonel
My Spitfire Girl
Costa Geriatrica

Posts: 33159

Quote:

Hi Hagar....
Thanks for the tip.
Actually all my planes are 3rd. party small prop planes, so that accounts for it...
I wonder why the designers don't match the 3rd. party/default instruments up together?
I wonder which I should rely on for accuracy, regarding stall speeds, my 3rd. party plane's gauge or the default 6 gauge layout..?

Cheers Doug... Grin

...!
Paul.
(England).

Well Paul, as I mentioned the defaults should be accurate. Hit Shift + Z to compare them with the onscreen readout. I'm not sure offhand if this is IAS or TAS. Roll Eyes

Founder & Sole Member - Grumpy's Over the Hill Club for Veteran Virtual Aviators
Member of the Fox Four Group

Need help? Try Grumpy's Lair

My photo gallery

Back to top

IP Logged

	Search the archive: