tryphon77 Posted December 20, 2017 Posted December 20, 2017 Hi everyone, Really minor issue for me : my displayed HUD IAS doesn't match with IAS in the "ctrl+Y" bottom screen data bar. Have I missed something or do you guys have the same :huh:? Best regards,
Emmy Posted December 20, 2017 Posted December 20, 2017 Airspeed displayed changes to TAS in AG mode. [sIGPIC][/sIGPIC] http://www.476vfightergroup.com/content.php High Quality Aviation Photography For Personal Enjoyment And Editorial Use. www.crosswindimages.com
tryphon77 Posted December 20, 2017 Author Posted December 20, 2017 Yes that is right. I was in NAV mode as you can see in the attachment. The Delta is between 15 to 20 knots. Pretty significant.
Esac_mirmidon Posted December 20, 2017 Posted December 20, 2017 Maybe, im not sure, the Harrier HUD is Calibrated Knots and the bar is only knots, not calibrated? " You must think in russian.." [sIGPIC][/sIGPIC] Windows 7 Home Premium-Intel 2500K OC 4.6-SSD Samsung EVO 860- MSI GTX 1080 - 16G RAM - 1920x1080 27´ Hotas Rhino X-55-MFG Crosswind Rudder Pedals -Track IR 4
ChickenSim Posted December 20, 2017 Posted December 20, 2017 The HUD is KCAS (Knots Calibrated Airspeed), not KIAS, but 15 to 20 knots does seem significant. Did it remain that far apart at lower AOA? "It is also true that we parted ways with Chicken after some disagreements."
tryphon77 Posted December 20, 2017 Author Posted December 20, 2017 It would make sens if it was Calibrated airspeed. But i think the airspeed in the HUD is Indicated airspeed as it is mentioned in the pocket guide page 44 and 46 (in the note). Where did you guys got the info that it was KCAS in the HUD ?
Zeus67 Posted December 20, 2017 Posted December 20, 2017 We'll check. "Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." "The three most dangerous things in the world are a programmer with a soldering iron, a hardware type with a program patch and a user with an idea."
ChickenSim Posted December 20, 2017 Posted December 20, 2017 We'll check. HUD should be KCAS (NAV, V/STOL, A2A) and KTAS (A2G) as the pitot pressure from the left pitot static probe passes through the ADC which converts it, and then through the MC and Display Computer which displays the HUD, MPCDs, and DDI. Standby airspeed indicator receives pitot pressure from the right pitot static probe, which doesn't pass through the ADC first, and should read KIAS. The ADC and Standby indicators receive static pressure from both probes. "It is also true that we parted ways with Chicken after some disagreements."
tryphon77 Posted December 20, 2017 Author Posted December 20, 2017 Awesome chickenSim and Thx evryone for the explainations ! I'll check the NATOPS for further details. :-)
Zeus67 Posted December 20, 2017 Posted December 20, 2017 The HUD airspeed indicator is Knots Calibrated Airspeed KCAS not KIAS. "Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." "The three most dangerous things in the world are a programmer with a soldering iron, a hardware type with a program patch and a user with an idea."
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