spanload implications for aircraft and birds

Drones have revolutionized flight, but how did they get here?

A Model Aviation unit of study for grades 3-5

I've had requests to talk more about how I make markings so put this together. I plan to go step by step once I'm to the point of making markings for our F4D Skyray project.
Read the article here ►http://wp.me/p5LuFX-s1

Here you will find activities that will help you teach the basic science concepts of flight to your students!

Would you like to build your own glider using balsa wood and foam? Check this out!

NASA's Armstrong Flight Research Center engineers in Edwards, California, are working on an increasingly complex aircraft called the Preliminary Research Aerodynamic Design to Lower Drag, or Prandtl-D.
NASA has provided a report and files that contain geometry in an effort to allow others to build and analyze this aircraft design!

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Control Line (CL) model aviation can trace its roots back to the early tethered experiments of Victor Tatin, whose compressed-air powered model was flown round-the-pole in 1879. In the 1920s and 1930s aeromodelers began to take this a step further and actually try and control their whip and powered aircraft in flight. Learn more here!