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RE: symmetrical wing question..
Only 6 percent of U.S. eighth-graders perform at the advanced level in math. Which unfortunately means that only 1 in 17 people have a clue about how dismal this statistic portends our collective future to be. Further reductions during high school and college mean that very few are left to understand technical challenges of the future. Technical prowess determines the strength of any nation, and as a country we have dropped the ball.
If you examine any model magazine from the 50's or early 60's, you see a high degree of technical sophistication that is entirely lacking in today's ARF review monthly. There are thread after thread of adults on modeling forums that have less basic modeling skills than the average 12 year old did 50 years ago. What we need is both the technical approach along with a less technical practical approach. As well as people that do, not just buy and fly. Modeling used to be a funnel that helped educate young boys and men to source the sciences, both applied and theoretical. |
RE: symmetrical wing question..
High Plains.... Well said. Math was an important subject when I went to school in the 70's and it sure gave me a lot of tools to use all through life and through my engineering career. Understanding the concepts, equations, and graphical representations in aviation does give one more enjoyment of the hobby. When I took my primary flight training, my flight instructor asked me to explain why it takes more power to fly slower when you are behind the power curve, and where on those curves are the best glide speeds. He was terrible at math, but we has great with graphs and concepts. Some people do have different ways thinking.
Math is important for economics and understanding our future as well. This is a bit off topic but some might enjoy all 8 parts of this math lesson: http://www.youtube.com/watch?v=F-QA2rkpBSY |
RE: symmetrical wing question..
ORIGINAL: HighPlains Only 6 percent of U.S. eighth-graders perform at the advanced level in math. Which unfortunately means that only 1 in 17 people have a clue about how dismal this statistic portends our collective future to be. Further reductions during high school and college mean that very few are left to understand technical challenges of the future. Technical prowess determines the strength of any nation, and as a country we have dropped the ball. If you examine any model magazine from the 50's or early 60's, you see a high degree of technical sophistication that is entirely lacking in today's ARF review monthly. There are thread after thread of adults on modeling forums that have less basic modeling skills than the average 12 year old did 50 years ago. What we need is both the technical approach along with a less technical practical approach. As well as people that do, not just buy and fly. Modeling used to be a funnel that helped educate young boys and men to source the sciences, both applied and theoretical. Thank goodness there are a couple of semi monthly articles that deal in technical that whet techie appetites. Unfortunately, b__tching about that at an open forum like this one does no good at all. Contact those powers and let them know how you feel. Be prepared tho because you are the minority by wide margins |
RE: symmetrical wing question..
OK guys, while I agree with you on all counts I have to ask that we get back on topic or carry on this latest diversion re education in the Clubhouse forum since it's got nothing to do with Aerodynamics or the topic of symetrical airfoil model setups.
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RE: symmetrical wing question..
ORIGINAL: Ben Lanterman The thing is that aerodynamics isn't magic or wild guessing. It is based in science which most of the guys that post here have had some of. Right....unless of course you take a gander at the "My Take On Wings" thread. Some of that text would have you believe that we are still searching for answers as if nothing authoritative has ever been written on the subject. ...and that would be my take! ______________ Closed the "quote" to separate the posts - BMatthews |
RE: symmetrical wing question..
Keep in mind that pretty much all of us partaking of the "My take on wings" thread are not acredited aeronautical engineers. So you'll have to excuse us for our floundering around... :D
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RE: symmetrical wing question..
ORIGINAL: BMatthews Keep in mind that pretty much all of us partaking of the "My take on wings" thread are not acredited aeronautical engineers. So you'll have to excuse us for our floundering around... :D I read the threads that interest me and I try to understand answers to things that come up. But sometimes I leave with more questions so I just scratch my head. Probably guilty of causingsomeconfusionmyself! |
RE: symmetrical wing question..
Lol.. a very funny read...
With some good information and great graphs.... Yes, a symmetrical wing with zero incidence will not produce lift at 0 degrees angle of attack. You will need elevator deflection to produce an angle of attack on the main wing which will then allow it to fly. Double the speed for a given angle of attack and you will have 4 times the lift.. It has a lot to do with the Kinetic energy formula which causes kinetic energy to increase as the square of the speed also.. KE = 1/2 M (V squared) V being velocity.. |
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