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On Sat, 06 Oct 2007 15:21:27 -0000, Arno
wrote: Hello, I am computer scientist and usually really like fancy technology. But I just had my first flight with a "glass" PFD (Avidyne) and must say I am not impressed. In particular reading altitude and airpeed from these scrolling bands requires a lot more attention than with regular gauges, just like reading a digital clock takes longer than reading an analog one. Glancing at it and checking against a known picture, like "speed at 3 o'clock is fine on final" or "altitude at 20 minutes past midnight is minimum", just does not work anymore, instead I end up reading the actual numbers every time I look. Does anyone feel the same? Am I missing a particular technique? Arno I had the same problem at first, but as others have said it's just a matter of practice. It's similar to the transition I made to using the HUD on my car. With the standard speedometer it's not so much about reading the number as it is in recognizing the geometry / location of the needle. With the HUD it takes another few milleseconds to read and process a displayed number. Kirk PPL-ASEL |
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![]() "Kirk Ellis" wrote in message ... On Sat, 06 Oct 2007 15:21:27 -0000, Arno wrote: Hello, I am computer scientist and usually really like fancy technology. But I just had my first flight with a "glass" PFD (Avidyne) and must say I am not impressed. In particular reading altitude and airpeed from these scrolling bands requires a lot more attention than with regular gauges, just like reading a digital clock takes longer than reading an analog one. Glancing at it and checking against a known picture, like "speed at 3 o'clock is fine on final" or "altitude at 20 minutes past midnight is minimum", just does not work anymore, instead I end up reading the actual numbers every time I look. Does anyone feel the same? Am I missing a particular technique? Arno I had the same problem at first, but as others have said it's just a matter of practice. It's similar to the transition I made to using the HUD on my car. With the standard speedometer it's not so much about reading the number as it is in recognizing the geometry / location of the needle. With the HUD it takes another few milleseconds to read and process a displayed number. Kirk PPL-ASEL In other words, you need to further increase your following distance in order to read your speedometer--even though it is placed closed to your normal line of vision. Actually, a little more following distance might be a good idea for most drivers, but this is an example of really poor ergonomics--without even considering the "wait until you wear bifocals" argument. Peter |
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On Sun, 7 Oct 2007 21:42:31 -0400, "Peter Dohm"
wrote: In other words, you need to further increase your following distance in order to read your speedometer--even though it is placed closed to your normal line of vision. Actually, a little more following distance might be a good idea for most drivers, but this is an example of really poor ergonomics--without even considering the "wait until you wear bifocals" argument. Peter I haven't done any ergonomic studies, but it does seem to take a tad less time for a quick glance at the dash. Still, tailgating is never an option. As opposed to a HUD in an aircraft, the practicality of a HUD in a car is completely lost on me. It displays ther fuel level, and oil temperatures, but I have to admit I don't see the point. It may be helpful if your zipping down the interstate at F-18 rotation speeds so you don't have to take your eyes off the road. But, mostly it's all about the "coolness" factor. Kirk PPL-ASEL |
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