Granted true airspeed is not a necessary bit of knowledge in flight, but I look at it occasionally to measure plane performance. Reading the fine print, or footnote for many aircraft reveals their speed performance numbers are based on true airspeed at 8,000 ft. So I'll occasionally look at this and see how my plane is performing. As light sport it is rated at 120 kts, but we're lucky to get 115 with 110 being more common. By using true relative to other flights I've sometimes discovered a slight decrease in performance, which then makes me look further. One time it was high speed jet synch of the twin carbs of the Rotax. Everything else was good but losing 5 kts true was an indicator. Better indicator than actual airspeed, which is affected by density altitude etc, or certainly than gps speed which is affected by winds. Again not essential, and not something I regularly scan for, but can tell with a quick glance when I do want the info. Similarly for wind speed and direction. I can tell by airspeed vs gps over the ground speed if there is a tailwind or headwind, but a quick glance gives me more accurate wind speed and direction. Not essential and I may not do anything with that knowledge, but if on a long cross country, like WA to OSH, I might change altitude and see if I can minimize wind effects. Certainly could do same looking at gps but wind speed & direction gives me an accurate number at a quick glance.
-----Original Message----- From: KRnet <krnet-boun...@list.krnet.org> On Behalf Of k...@bouyea.net Sent: Tuesday, March 22, 2022 8:18 AM To: krnet@list.krnet.org Subject: Re: KRnet> Instrument Panel for my KR2S https://executiveflyers.com/true-airspeed-vs-indicated-airspeed https://en.wikipedia.org/wiki/Airspeed -----Original Message----- I'm still curious about the interest in "true airspeed" and maybe the wind speed in direction and speed. True airspeed to me is a campfire chat bragging issue (I've never use it to fly) and unless the wind information gives me a heading to fly that is not available otherwise (my magenta line and track and bearing), that info is also screen clutter. -- KRnet mailing list KRnet@list.krnet.org https://list.krnet.org/mailman/listinfo/krnet -- KRnet mailing list KRnet@list.krnet.org https://list.krnet.org/mailman/listinfo/krnet
