Lange_666 Posted December 26, 2008 Posted December 26, 2008 What is the difference between the speed readout in the HUD/ABRIS and the one in the external view? I know HUD/ABRIS is groundspeed but what's the one in external view refering to? Win11 Pro 64-bit, Ryzen 5800X3D, Corsair H115i, Gigabyte X570S UD, EVGA 3080Ti XC3 Ultra 12GB, 64 GB DDR4 G.Skill 3600. Monitors: LG 27GL850-B27 2560x1440 + Samsung SyncMaster 2443 1920x1200, HOTAS: Warthog with Virpil WarBRD base, MFG Crosswind pedals, TrackIR4, Rift-S, Elgato Streamdeck XL. Personal Wish List: A6 Intruder, Vietnam theater, decent ATC module, better VR performance!
d0ppler Posted December 26, 2008 Posted December 26, 2008 I guess it's the indicated airspeed (IAS) you'll read from the airspeed gauge. A-10C, AV-8B, Ka-50, F-14B, F-16C, F-5E, F/A-18C, L-39, Mi-8, MiG-21, MiG-29, SA34, Spitfire, Su-27, Su-33, UH-1H
miguez Posted December 26, 2008 Posted December 26, 2008 You might be seeing what I am seeing, which is the speed in knots and altitude in feet in the bottom "info tab" on the external views, even though my helicopter is set to use metric, so my instrument panel displays km/h and meters, respectively. Not sure there's a way to control just the units of the info bar?
AlphaOneSix Posted December 26, 2008 Posted December 26, 2008 The ABRIS shows airspeed as calculates by GPS. The HUD shows airspeed over the ground as calculated by the Doppler. Because of this, ABRIS and HUD both show ground speed and are almost the same when flying. Your TV screen displays the airspeed from your airspeed indicator, both of which are only measuring your airspeed through the air, and not over the ground, which can be significantly different depending on winds. I never look at the one in external view so I'm not sure whih one that is. ;)
RvETito Posted December 26, 2008 Posted December 26, 2008 Externals show true airspeed. "See, to me that's a stupid instrument. It tells what your angle of attack is. If you don't know you shouldn't be flying." - Chuck Yeager, from the back seat of F-15D at age 89. =RvE=
Zorrin Posted December 26, 2008 Posted December 26, 2008 The reason you are seeing it in knots is because you have set them to Imperial in the options in the GUI. Set those back to Metric and you'll see it in km/h and m rather than knots and feet - if you wanted to that is... Eagles may soar, but weasels don't get sucked into jet engines.
miguez Posted December 26, 2008 Posted December 26, 2008 The reason you are seeing it in knots is because you have set them to Imperial in the options in the GUI. Set those back to Metric and you'll see it in km/h and m rather than knots and feet - if you wanted to that is... Thanks Zorrin, I'll try that, didn't know there were independent controls of GUI and cockpit units, awesome customization options, thanks ED!
TonyP Posted December 28, 2008 Posted December 28, 2008 Guess there's no way to have the cockpit instumentation in Imperial (USA), I may need to reset my preference to metric in the external, since what's controling seems to be the cockpit orientation. Kinda got to remember that metric kph is .6 roughly of mph.
nemises Posted December 28, 2008 Posted December 28, 2008 (or catch up with the rest of the world :P)
Fishu Posted December 28, 2008 Posted December 28, 2008 Your TV screen displays the airspeed from your airspeed indicator, both of which are only measuring your airspeed through the air, and not over the ground, which can be significantly different depending on winds. And which also depends on the altitude due to thinner air. The error is roughly 5 kt per 1000ft or 9km/h per 300m. At 3000m the disparency between ground speed and indicated air speed is about 90km/h.
Fishu Posted December 28, 2008 Posted December 28, 2008 Guess there's no way to have the cockpit instumentation in Imperial (USA), I may need to reset my preference to metric in the external, since what's controling seems to be the cockpit orientation. Kinda got to remember that metric kph is .6 roughly of mph. In aviation they tend to use knots exclusively under the imperial system, instead of mph. 1 kt = ~1,85 kph and 1 kph = ~0,54 kt.
Zorrin Posted December 28, 2008 Posted December 28, 2008 Guess there's no way to have the cockpit instumentation in Imperial (USA), I may need to reset my preference to metric in the external, since what's controling seems to be the cockpit orientation. Kinda got to remember that metric kph is .6 roughly of mph. There is... Although it doesn't really make that much sense seeing as it's a Russian bird... If you go into the ABRIS settings menu (in cockpit)... I can't remember where exactly, but it's from the main menu after you click the OPTION button. You can then choose the units for measurement. You will have to do some digging it's been a while since I did it. I can't remember how much of the system gets changed, but the ABRIS will at least display its figures in knots and nautical miles. Eagles may soar, but weasels don't get sucked into jet engines.
Tango Posted December 28, 2008 Posted December 28, 2008 Hi, IAS rules! GS is for navigation, not flying. ;) Best regards, Tango.
Recommended Posts