Archive for April, 2006

Natural frequency in helicopters (Aeroelasticity & structural vibrations)

Friday, April 21st, 2006

Here’s a video (Chinook Ground Resonance Test) that shows a chopper getting torn apart from a slow and steady spin. This occurs because the natural frequency of the blades and the frequency of the internal vibrations (engine, rpm of blades) coincide causing the stresses to amplify by huge amounts. There is nothing wrong [...]

enehana.com a tech news site for Hawai’i

Friday, April 14th, 2006

Earlier this week I created a super simple site to keep track of technology around the state. By simple I mean real simple; just a place to post links to business, tech jobs, programming, engineering, or just plain cool news happening in Hawai’i. What for? I think it’s needed. There are [...]

A record breaking Keizo

Friday, April 14th, 2006

Photo CreditA google for my name turned up an incredible guy named Keizo Yamada. The Japanese man is a “5 foot 2 package of perpetual motion” that won the Boston marathon in 1953. He was the smallest guy in the race and just about smoked everyone. Quite the inspiring guy. [...]