Scoop Posted September 5, 2023 Posted September 5, 2023 Anyone seeing a reason why the analogue airspeed indicator is always 5 knots behind the airspeed indicated on the HUD, CDU and HMCS? Not sure it should be like this as I would have thought all indicated airspeeds should be the same? Behaviour is the same in ST and MT. Asus Dark Hero X570, AMD 5800x3D, RTX 4090 Reference, All on Custom Water Loop, 3600 CL15 XMP, 4xCrucial P5P 2T M2+SSD's, Hotas Warthog, Reverb G2, Latest DCS MT and VR only A10CII and AH64D, Nevada, Persian Gulf, Syria, Marianas, Caucasus, Afghanistan
jaylw314 Posted September 5, 2023 Posted September 5, 2023 In that screenshot, if anything, the ASI seems to indicate about 5 knots faster than the 205 knots in the HUD. IIRC, the HUD airspeed comes from the CADC, and I can't remember if it defaults to IAS or CAS. The difference would be pretty tiny, but we're talking about a pretty tiny discrepancy.
Solution ASAP Posted September 5, 2023 Solution Posted September 5, 2023 That is normal and accurate. It’s just the analog guage and the digital system not being perfectly synced. The analog guage isn’t super precise. 1 1
Scoop Posted September 6, 2023 Author Posted September 6, 2023 Thanks for the reply guys. Asus Dark Hero X570, AMD 5800x3D, RTX 4090 Reference, All on Custom Water Loop, 3600 CL15 XMP, 4xCrucial P5P 2T M2+SSD's, Hotas Warthog, Reverb G2, Latest DCS MT and VR only A10CII and AH64D, Nevada, Persian Gulf, Syria, Marianas, Caucasus, Afghanistan
Sn8ke Posted September 6, 2023 Posted September 6, 2023 (edited) I believe the Airspeed Indicator is tied directly to the pitot-static system, and the HUD airspeed comes from the Air-Data Computer (ADC). I flew a plane at work the other day that has two analogue air speed indicators, and a PFD airspeed indicator. There was about a 12-knot difference between all 3 lol. Edited September 6, 2023 by Sn8ke 1 Asus Prime Gaming Wifi7 // Intel 14900K @5.5GHz // 64Gb DDR5 6000MHz // 3090 RTX // 4TB Samsung NVME M.2
jaylw314 Posted September 6, 2023 Posted September 6, 2023 (edited) 2 hours ago, Sn8ke said: I believe the Airspeed Indicator is tied directly to the pitot-static system, and the HUD airspeed comes from the Air-Data Computer (ADC). I flew a plane at work the other day that has two analogue air speed indicators, and a PFD airspeed indicator. There was about a 12-knot difference between all 3 lol. As far as I can tell, you're correct, the ASI is a pitot/static instrument, although I'm assuming in DCS that subtle distinction is not simulated, and the difference is just a graphical glitch. Edited September 6, 2023 by jaylw314 1
Insonia Posted September 6, 2023 Posted September 6, 2023 the HUD and ASI deviation remain the same all the way regardless temp and pressure settings. From densest air to thinnest air, and 15C 29.92inhg it might be just a visual, so far i can tell.
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