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Comment: Re:Wildly premature question (Score 1) 81

by Bruce Perens (#48620117) Attached to: SpaceX To Attempt Falcon 9 Landing On Autonomous Spaceport Drone Ship

If we look at jet aircraft, wear depends on the airframe and the engines, and the airframe seems to be the number of pressurize/depressurize cycles as well as the running hours. Engines get swapped out routinely but when the airframe has enough stress it's time to retire the aircraft lest it suffer catastrophic failure. Rockets are different in scale (much greater stresses) but we can expect the failure points due to age to be those two, with the addition of one main rocket-specific failure point: cryogenic tanks.

How long each will be reliable can be established using ground-based environmental testing. Nobody has the numbers for Falcon 9R yet.

Weight vs. reusable life will become a design decision in rocket design.

Comment: Re:It could be worse (Score 1) 247

by grub (#48527223) Attached to: Ask Slashdot: Convincing My Company To Stop Using Passwords?

Simple fix: don't ever set your voicemail password.

I went over 10 years without enabling my dreaded voicemail, some people complained but I never budged. My current Director told me to set it up about six months ago. I did and used a random integer set from random.org as the password.

I can honestly say "I forgot my voicemail password" and let the thing fill up.

The only possible interpretation of any research whatever in the `social sciences' is: some do, some don't. -- Ernest Rutherford

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