Saturday, June 26, 2004

Copyright & other misc.


Alert readers will note that I've now released the contents of this website under a Creative Commons license. I feel that this issue is every bit as important as CATS. (Don't worry about your comments though, they remain your property.)

As this weblog leans more towards analysis than news, there may or may not be daily updates and changes, I will however keep the non-space material to a minimum.



Friday, June 25, 2004

Don't fear the standing army.


One of the central articles of the CATS faith is to 'avoid having a standing army'. One suspects this emerges mostly from the 'NASA does this, and to be CATS one must not do what NASA does' portion of the creed. This attitude however is, as Miracle Max might say, only mostly right. How to, and not to, do things should emerge from experience and be based on first principles not on dogma. Some of these first principles however are things that don't usually get much credit in the engineering oriented community that is CATS, namely PHB's and bean counters.

One of the most derided standing armies is the one supporting the Space Shuttle at Cape Canaveral, thousands of people supporting a small handful of vehicles flying a few missions a year. Somehow the equally large armies maintained by US Air, Southwest Airlines, etc. go unnoticed or at least unmentioned. Yet, the fact that they exist indicates that they cannot be dispensed with. (This should be obvious from first principles; if you are operating a vehicle, someone needs to kick the tires and check the oil level now and again.)

The key difference between the two armies is this; while those at the Cape support a few flights a year, those with the airlines support hundreds if not thousands of flights a day. There are two terms to the equation that determines how ground personnel affect your total costs, the first is their gross numbers of personnel, the second (and often ignored by the CATS folks) is how many flights per diem or per annum that they support. The bottom line of a tourist or transport operation is affected by both terms. One ignores this at peril.

Another issue, well known in many engineering and accounting communities, is that turn around time isn't the only criteria. Any vehicle participating in extended operations will also require both occasional repairs and routine periodic maintenance. Engineering cleverness that reduces weight, construction costs and turn around times must be balanced against its impact on day to day safety, maintenance, and operations. The key is to reduce the total cost of ownership not just the daily and per flight costs of operation.

Don't fear the standing army. Fear the impulse to concentrate on one facet of an issue while ignoring other aspects. A startup tourist or transport company would do well to hire an engineer and a CPA who aren't dreamers about space and who can serve to provide balance to the corporate viewpoint.



Thursday, June 24, 2004

The Meaning of Monday


Jeff Foust in the Space Review writes SpaceShipOne makes history — barely, an issue that's sometimes lost in the (rightful) hoopla surrounding Monday's flight. While the all-important goal of 100km was reached, the flight was not without problems.

However, the flight also demonstrates the reason why incremental testing is viewed as a requirement by the space access community. Monday's goal was 107km to meet the record previously established by the X-15), without carrying the ballast required to meet the X-Prize requirements. This would have established that Spaceship One had sufficient performance to reach the required altitude in an actual X-prize attempt. They fell short of this goal because of control system problems of currently unknown origins. Had this been an actual Prize attempt (as many believed it should have been) the attempt would likely have failed, doing significant damage to the reputation of the Prize. However, the emphasis on reusability inherent in the Prize saved the day, Astronaut Mike Melvill was able to continue the flight and land safely. SpaceShip One will fly another day once the issues from Monday's flight are resolved and once the system is proven functional, take a shot at the Prize.

Monday's flight has also obscured another important point; the real goal of Cheap Acess to Space lies much higher - in low earth orbit. As Robert Heinlein wrote "If you can get into orbit, then you're halfway to anywhere".



Starship Summer / Seti@Home


I've started a Seti@Home team named Starship Summer. I invite all readers of this weblog to join the team!.


Tuesday, June 22, 2004

SpaceShip One - More on the June 21st flight.


Some quick links to further information and resources concerning the June 21st flight of SpaceShip One.
  • Alan's Mojave Airport Weblog has a page of photographs taken on the day of the flight.
  • Slashdot.org is carrying a discussion of an article in the New Scientist regarding the performance of Spaceship One in flight.
  • Messages of congratulations to pilot Mike Melville may be left at www.mikemelvill.com.


About Spaceship Summer


This weblog is dedicated to information about space tourism, the X-Prize, and CATS (Cheap Acess to Space). Submissions may be made by email to fairwater AT gmail DOT com, or to the usenet newsgroup sci.space.policy, please put [Spaceship Summer] in the subject line. Essays, comments, pictures, or anything else related to the topic are gladly accepted.


The name Spaceship Summer comes from several sources. It's in honor of the first manned civilian spaceflight on the first day of summer 2004, as well as the classic science fiction short story 'Rocket Summer' by Ray Bradbury. It's also an allusion to the eternal sunshine of outer space.


Alert readers will note that I've now released the contents of this website under a Creative Commons license. I feel that this issue is every bit as important as CATS. (Don't worry about your comments though, they remain your property.)


As this weblog leans more towards analysis than news, there may or may not be daily updates and changes, I will however keep the non-space material to a minimum.