On Fri, Aug 25, 2006 at 07:42:09PM -0400, [EMAIL PROTECTED] wrote: | Best I did was 'measuring' the wing on an OLY II to be 1'4" in span | when flying over the middle of the old Hourglass Field (Home of the | TPG) in San Diego, CA back in the mid-70's ... | | So, if someone can 'massage' the numbers, how would 1/4" relate to an | actual wingspan of 8' and then correlate that to a vertical distance | (measurement) ?? ...
For small angles, the formula is wing span / distance = angle (in radians) or distance = wing span / angle (in radians) or distance = wing span * (180/pi) / angle (in degrees) and 0.25" = 7.3e-5 radians, so that works out to 20.8 miles. Somehow, I don't think you really meant 1/4" :) Using 1'4", I get 4.8 miles, so I'm still a bit skeptical. :) Using 1 degree 4', I get 424 feet, which doesn't seem so impressive. Using 1/4 degree, I get 1832 feet, which is impressive and possible. I wonder if there's some confusion about what exactly you measured? >From my point of view, one circle = 360 degrees, 1 degree = 60 arc minutes, which is abbreviated with a ' symbol, and 1 arc minute = 60 arc seconds, which is abbreviated with a " symbol. Unless I've made some mistakes in my math, but I can't find any .. Personally, my highest measured flight was in my 2m Spirit Elite -- 2614 feet, measured with my RAM2. http://mclarenhome.com/~dougmc/RC/flights/flight-2005-09-05.gif At that point it was pretty much just a speck, but if I looked really carefully I could sort of tell what direction it was pointed. I lost it a few times, and decided it was time to come down ... -- Doug McLaren, [EMAIL PROTECTED] "I say consider this day seized!" -Hobbes "Tomorrow we'll seize the day and throttle it!" -Calvin RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
