Samizdata

It has been a busy couple of weeks: two proposals and the holiday season on top of it. It’s had me so tied up I am just now getting around to other matters.

I’m ‘throwing my hat in the ring’ for the next National Space Society Board of Directors election. The time left for me to be included amongst the Board nominees is rather short. I need my signed petitions into the NSS office by midnight January 15th. I’ve already emailed petition forms to a bunch of folk, a few of which I know are also Samizdata readers. If you are not one of them (ie you didn’t just get an email from me) and know you will be a paid up member of the Society as of January 15th, 2004, please contact me via the comments section and I’ll send you a copy of the petition and related information.

Note that attempting to send email directly to me will result in delays of a day or two as I have a white list which dumps all unexpected mail into a holding pen.

I’ve finally got my hands on the Scaled Composites flight test report from Dec 17th, 2003:

Objectives: The eighth flight of SpaceShipOne and first powered flight. 15 second burn of the rocket motor and supersonic flight. Motor light off at altitude and inflight engine performance. Vehicle handling qualities through transonics and feather performance from altitude.

Results: Launch conditions were 47,900 feet and 112 knots. Motor light off was achieved at 44,400 feet and 0.55M. Burnout occurred at 1.2M and apogee was 67,800 feet. There was no noted flight control flutter or buzz during the climb. Feather recovery exhibited a +/-30 roll initially and then settled down into the familiar falling bathtub mode. The wing was de-feathered and locked by 35,000 feet. A nominal landing pattern was flown but touchdown caused the left main gear to collapse and the vehicle rolled to a stop off the runway in the soft sand. Although the damage was not major, repairs are expected to take approximately three weeks to complete.

Now hands up for everyone who believes NASA could return an unmanned children’s kite to flight in three weeks after a gear collapse…

Here are the official Press Releases. Microsoft billionaire Paul G. Allen has used the event as an opportunity to admit what everyone knew: he is the secret backer of the Rutan’s project. The second release is the official announcement of the flight, warts and all.

They reached 68,000 feet after a 15 second burn and hit Mach 1.2 during the flight.

I’m not all that surprised they went supersonic. I was thinking about the issue and suspected the thrust to weight on that craft is such they’d have little other choice for a serious test. I’ve been watching them gradually build up the test profile over the last couple months. Even so, I was a bit surprised to see the first powered flight of SpaceShipOne push the envelope as aggressively as it did.

They have tested it several times in a sort of hammerhead stall if the picture I get from the test documents is right. They let it fall off the top in a stall and then recover control. The vertical stall at altitude is part of the testing for recovery of control on re-entry. As I understand it, they do not have an RCS (Reaction Control System, what you use when there ain’t no air for ailerons). If true, they will be more cautious as they begin probing non-aerodynamic altitudes as they are depending on the inherent balance of the ship to keep it facing forwards and rightside up.

From here on out, they are reaching for Space. They’ll take SpaceShipOne higher and faster flight by flight until they finally put some vacuum under her tail.

Those supporting the government position have said high costs are inherent in space flight. The short time scale, low costs and aggressive testing program of Scaled Composites should be an eye-opener to those nay-sayers. What I and others have been writing for nearly a quarter of a century is correct. The rocketmen are not underestimating the cost of space. It is the government and government contractors who have been “ripping the arse” out of the public purse.

After twenty-five years of the blood, sweat and tears of pioneering rocketmen from Zaire to Matagordo Island to San Francisco Bay to Vandenberg we have proven our case. Scaled Composites is not alone. There are others close behind them. Many first flights will happen this decade in a reprise of the totally private aviation of 1903-1910.

It is the end of the beginning and a marvelous time to be alive.

Note: Doug Jones reports SpaceShipOne has a cold gas RCS. I find this very comforting.

Scaled Composites carried out its seventh drop of SpaceShipOne on December 4th. According to the test report, pre-ignition propulsion system checks seem to be moving forward nicely:

Objectives: The seventh glide flight of SpaceShipOne and new pilot check out. Full functional check of the propulsion system by cold flowing nitrous oxide. Completed airspeed and positive and negative G-envelope expansion.

Results: Launch conditions were 48,400 feet and 115 knots. All propulsion components, displays and functionality performed as designed. The feather was extended after a 4G pull-up to the vertical at 24,500 feet and rudder used to induce sideslip and yaw rates while “going-over-the-top”. The vehicle recovered to a stable attitude and descent after only a single oscillation. The landing pattern was flown following established procedures resulting in a satisfactory touchdown.

December 17th is less than a week away, very close to two weeks from when this flight test occured. That is close enough to the intervals between the last three tests one could expect at least a drop test on the Wright Brothers First Flight date. I still think an in-flight engine ignition and a short burn is within the realm of possibility.

Meanwhile, Armadillo Aerospace has solved their H202 supply problems, has run a test engine at better than 1000lbf and good ISP and is working on vehicle modifications to deal with the new engine design.

You can watch them testing the modified landing shock absorbers of their VTVL spaceship.

I did not see the spectacular solar storm last month. It turns out I was wrong inferring from my failure that there was no auroral display visible in Belfast. A week or so ago I was chatting with a fellow who worked for me in two different companies over the course of perhaps eight years… and found that not only did he see an auroral display – he photographed it!

I hope for the sake of his server the Samizdata effect is not quite so dire as the Reynolds Effect…