britgliderpilot Posted June 23, 2005 Share Posted June 23, 2005 The speed to fly in the top left of the HUD is obviously set in the mission editor as TAS. The IAS that that corresponds to decreases as altitude increases. Hence as you climb, the indicated speed to fly decreases. The true speed you'll be flying at remains the same, but it's slightly confusing . . . . Is this the way that the real HUD works? Anyone? (And yes, it's probably been like this since v1.02 and I haven't noticed :p ) http://img.photobucket.com/albums/v121/britgliderpilot/BS2Britgliderpilot-1.jpg Link to comment Share on other sites More sharing options...
GregP Posted June 23, 2005 Share Posted June 23, 2005 Well for a given true airspeed, with altitude your IAS should be decreasing, right? Density's dropping, so your IAS, which assumes sea-level (or takeoff) density, is going to show a lower airspeed as altitude increases for a given true airspeed. Therefore, if the HUD wants to show you the IAS to fly at, that number is going to be decreasing as altitude increases. Although now that I read your post again, maybe you weren't actually asking for an explanation of why this was, but instead why is the HUD modelled that way? In that case I'd assume because the HUD is showing IAS? Or is it CAS? Now I'm confused too. :) Link to comment Share on other sites More sharing options...
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