Collaborate Disseminate
The logo for the United States Postal Service is a mean-looking eagle. But a true fluid dynamics geek might look at it and realize that eagle is moving so fast it’s causing a shock wave. But just how fast is it moving? [Andrew Higgins] asked and answered this question, posting …read more
Continue reading Mathematical Proof the Eagle in the USPS Logo is FAST!
On a bright spring morning in 1940, the Royal Air Force pilot was in the fight of his life. Strapped into his brand new Supermarine Spitfire, he was locked in mortal combat with a Luftwaffe pilot over the English Channel in the opening days of the Battle of Britain. The Spitfire was behind the Messerschmitt and almost within range to unleash a deadly barrage of rounds from the four Browning machine guns in the leading edge of the elliptical wings. With the German plane just below the centerline of the gunsight’s crosshairs, the British pilot pushed the Spit’s lollipop stick …read more
Iran’s military unveiled a new version of its homebuilt Qaher F313 fighter jet last weekend, but a drive down the runway revealed it’s far from ready for flight. Continue reading Iran’s Stealth Fighter Is Still Fake and Not Convincing Anyone