More on Forgiveness…

Perhaps the most difficult commandment is to forgive those who have hurt us. We often hope that some calamity or punishment will fall upon them. There is a German word “Schadenfreude.” It means pleasure derived from the misfortunes of others. The Lord has warned us… Read more

Congratulations SpaceX

Dragon Cargo Spacecraft Berths with International Space Station To Sam DiMaggio, Jessica Jensen and all my colleagues at SpaceX… Very Well Done! Great day for America’s commerical space industry! I am pleased that Sam and his engineering staff use my Vibrationdata software and tutorials in… Read more

Rail Impact Shock

Question: MIL-STD-810G, Method 526 Rail Impact, outlines the physical test of an actual system at 4, 6, and 8 mph. Is there an equivalent laboratory shock test for equipment which is to be transported via railroad car? Answer 1: from Tom Irvine U.S. Army TB… Read more

North Korean Rocket Failure

Severe vibrations likely brought down N. Korean rocket By George Leopold 4/13/2012 3:15 PM EDT WASHINGTON – The failure of North Korea’s three-stage Unha-3 rocket on Thursday (March 12) was most likely caused by severe vibrations at an early point in the flight trajectory known… Read more

Aerospace Conference

The 2012 Spacecraft and Launch Vehicle Dynamic Environments Workshop will be held in El Segundo, California, June 19-21. The conference information is give at: Workshop Link I will present a paper: An Alternate Damage Potential Method for Enveloping Nonstationary Random vibration I hope to see… Read more