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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The first mass produced model airplane engine was designed and built by 16-year old Bill Brown, Jr. His friend, Maxwell Bassett designed model aircraft to test the engines. In 1933, flying with a gas engine, Max won the Mulvihill, Cabin model Stout, and the Moffeft International Trophy because the rules did not yet stipulate the type of power.