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Some of the best advice to combat external pressures and general rushing mistakes is to just take a minute. Literally.

Instead of one big decision, it’s actually a series of smaller ones. And as with all choices, there are consequences we have to understand and accept.

4 August 2021 Below is our response to the FAA’s Advisory Circular 91-57c regarding the changes slated for the Exception for Limited Recreational Operations of Unmanned Aircraft. Overall, this Advisory Circular addresses the process of how to go about applying as a Community Based Organization (CBO) and the details regarding what the FAA would like to see from the organizations and educational institutions regarding safety rules and enforcement of certain actions. As you can see from the sections noted below, there is a lot that we would like to see addressed. To reference the AC, please se...

AVweb What’s Your Angle? Pitch plus power still equals performance. Once we decide on the desired combination for different flight phases, we can use it again and again. In the April issue of Aviation Safety, we explored the theories of generating lift from Bernoulli and Newton, and how neither of them alone fully explains how airfoils work. Bernoulli’s basic understanding of low pressure above an airfoil is correct, but the math is wrong and his assumptions are faulty. He also doesn’t explain inverted flight. Meanwhile, Newton has a decent handle on using angl...

By NewEnglandBob (not verified) on 08 Sep 2010 #permalink Thanks for a lesson relatively easy to understand. By ThirtyFiveUp (not verified) on 08 Sep 2010 #permalink The quote is from Leonardo Da Vinci. Nice pics though, Thanks for sharing them. By Tom (not verified) on 08 Sep 2010 #permalink Excellent post! I had seen photo's like that before, but never realised what was causing the rainbow. @Tom, actually I think Ethan got it right. The quote (one of my favourite aviation quotes) is commonly attributed to da Vinci. However, no-one can actually point to a verifiable da Vinci source for i...