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HerbyW / AN-225-Mrija

Antonov AN-225-Mrija for Flightgear by HerbyW
GNU General Public License v2.0
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Overspeed Alarm #1

Open CA1012 opened 9 years ago

CA1012 commented 9 years ago

The overspeed alarms keeps going of at FL150, and i am trying to NOT fall out of the sky, so i think that disabeling the alarm would be more effeciant, and this is also FG so unrealisim is OK, but i Understand the realsism thing is desireable, but could you set the overspeed alarm to 490 Indicated? because i think that its going off for GS.

HerbyW commented 9 years ago

Maximum speed is 850 km/h and this is 459 kts, and yes it is groundspeed. You will not fall out of the sky with this speed, but with indicated 490 you will have mach 25 or so, and this could never be any way to go. 11 km is maximum hight = 36000 ft, but you will not get this with full payload. You may try out the shuttle, this will go any speed you want, up to mach 38 and 25.000.000 ft. Greetings, HerbyW

CA1012 commented 8 years ago

HerbyW, i just did a calculation, and 490 is about 0.73 mach. not mach 25.

HerbyW commented 8 years ago

Please look up the difference between the different speeds in the wiki. Airspeed and groundspeed are totaly different. In 36000 ft you have not so much air, so the airspeed is less. Groundspeed tells you the real speed of moving from A to B. And this is critical for the airframe. The An-225 have a maximum of 459 kts. The reason you fall out of the sky is maybe the climbing rate, in hight more than 30000 you should go to 300 ft per minute or so, not 1500 as it is made by setting the altitude hold.