Superfast Us Military Plane Reaches Mach 20 Speed, Then Crashes

An unmanned U.S. military aircraft managed to reach speeds of more than 20 times the speed of sound, and to control itself for three minutes, before it crashed into the Pacific near Vandenberg Air Force Base on August 11. Space.com/MSNBC. Here's an earlier item in the LA Times. Above and below, DARPA images and video depicting the the prototype Falcon Hypersonic Technology Vehicle 2 (HTV-2), described as the fastest aircraft ever built.

Superfast US military plane reaches Mach 20 speed, then crashes

Backlink: http://feeds.boingboing.net/~r/boingboing/iBag/~3/-hYin7OOfzQ/super-fast-us-military-plane-hits-mach-20-then-crashes.html

Need for Speed: How the Autobahn Works

The word "autobahn" conjures images of top-speed thrills on smooth stretches of highway in the Bavarian heartland. The truth is, most German drivers simply consider it a way to get from point A to point B. How fast can you really go on this famous road?

Need for Speed: How the Autobahn Works

Backlink: http://feeds.howstuffworks.com/~r/DailyStuff/~3/hMYeqMUmE60/autobahn.htm