Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror

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: If I was running a school system ... (Score 1) 233

by stinerman (#48493577) Attached to: Football Concussion Lawsuits Start To Hit High Schools

And you'd be ran out of town.

In many places in small town america, high school sports (especially football and basketball) are a big entertainment draw. In my hometown of 6,000, it was not unusual to see over 1,000 people at a football game.

I hate to say it, but most people are more interested in winning the state championship than in leading the state in graduation rates.

Comment: Wikipedia the vector (Score 1) 61

by Bruce Perens (#48386659) Attached to: Researchers Forecast the Spread of Diseases Using Wikipedia

Like others I found the headline confusing. I read it as "Researchers are predicting the use of Wikipedia as a vector for the spread of disease". This may mean that:

  • Disinformation and ignorance are diseases.
  • Memes and computer viruses are diseases.
  • Wilipedia contains information that leads to depression.
  • Instructions on Wikipedia lead to substance abuse.
  • This is getting entertaining, fill in your own reason here.

Comment: Re:TWC are (surprise, surprise) crooks and thieves (Score 1) 223

by stinerman (#48383067) Attached to: Overbilled Customer Sues Time Warner Cable For False Advertising

Declare all exclusivity/franchise agreements null and void

Exclusive franchise agreements haven't been allowed since 1992.

The Communications Act requires that no new cable operator may provide service without a franchise and establishes several policies relating to franchising requirements and franchise fees. The Communications Act authorizes local franchising authorities to grant one or more franchises within their jurisdiction. However, a local franchising authority may not grant an exclusive franchise, and may not unreasonably withhold its consent for new service.

Its a natural monopoly. The infrastructure needs to be separate from the services.

I'm lucky. I live in an area where I have about 4 choices for TV/Internet/etc. That's still not enough.

Comment: Re:Not a good week... (Score 1) 445

by Bruce Perens (#48298059) Attached to: Virgin Galactic SpaceShipTwo Crashes

One of the definitions I found was:

One who makes great sacrifices or suffers much in order to further a belief, cause, or principle.

I am sure that fits. While SpaceShip II is mainly intended for a non-exploration purpose, the program has resulted in some significant advances in rocketry and White Knight II has significant non-tourism use. These pilots have been involved in other space efforts, I remember the one who was injured from the Rotary Rocket test flights. There are lots of safer ways for these folks to make as much money as a test pilot is paid. They do what they do to advance our progress in aeronautics and space.

We can defeat gravity. The problem is the paperwork involved.

Working...