We are developing the social individualist meta-context for the future. From the very serious to the extremely frivolous... lets see what is on the mind of the Samizdata people.
Samizdata, derived from Samizdat /n. - a system of clandestine publication of banned literature in the USSR [Russ.,= self-publishing house]
|
I just received this Burt Rutan statement in my ‘in-basket’. It addresses the much media hyped rolls, which were in reality not a very big deal:
While observing the significant incorrect information being published about the rolls seen on the 29 Sept 04 SpaceShipOne flight, we are responding by offering a bit of discussion to help provide some clarity. This information is approved for publication — Burt Rutan
Comments On The Rolling Rumors
Burt provides some preliminary information about the rolling motions seen on the First X-Prize Flight:
The complex reason on why the rolling departure occurred will be described in a report we will post at a later date. What I am intending to do here is merely address some of the incorrect rumors about the rolls that have been seen in various news stories and web discussion groups.
While the first roll occurred at a high true speed, about 2.7 Mach, the aerodynamic loads were quite low (120 KEAS) and were decreasing rapidly, so the ship never saw any significant structural stresses. The reason that there were so many rolls was because shortly after they started, Mike was approaching the extremities of the atmosphere. Nearly all of the 29 rolls that followed the initial departure were basically at near-zero-q, thus they were a continuous rolling motion without aerodynamic damping, rather than the airplane-like aerodynamic rolls seen by an aerobatic airplane. In other words, they were more like space flight than they were like airplane flight. Thus, Mike could not damp the motions with his aerodynamic flight controls.
Mike elected to wait until he feathered the boom-tail in space, before using the reaction control system thrusters (RCS) to damp the roll rate. When he finally started to damp the rates he did so successfully and promptly. The RCS damping, to a stable attitude without significant angular rates was complete well before the ship reached apogee (337,600 feet, or 103 Km). That gave mike time to relax, note his peak altitude, and then pick up a digital high-resolution camera and take some great photos out the windows. Those photos are now being considered for publication by a major magazine.
While we did not plan the rolls, we did get valuable engineering data on how well our RCS system works in space to damp high angular rates. We also got a further evaluation of our “Care-free Reentry” capability, under a challenging test condition. As seen on the videos of the flight, the ship righted itself quickly and accurately without pilot input as it fell straight into the atmosphere. No other winged, horizontal-landing spaceship (X-15, Buran, SpaceShuttle) has this capability.
Incidentally… there will be quite an all night party at Mojave Civilian Test Flight Facility (and Spaceport) the night before the second flight. Apogee Books is sponsoring an all night music fest near their tent in the public viewing area.
Sadly I will again not be there.
Addendum: For the non-pilot readers, KEAS is Knots Equivalent Airspeed. Knots are Nautical Miles per Hour in pilotese. To place this in perspective, my old Cessna 172, (N3892S circa 1981), was quite happy cruising along at 120 KIAS, or 120 Knots Indicated Airspeed. Airspeed is how fast the wind is going past your wings. If you were in a 120 Knot headwind, you could be flying 120 KIAS and sitting over someone’s head like you were the ball on top of a flagpole. Indicated means it is what you read off the dial in the cockpit; Equivalent means that the air over your wings has the equivalent effect after accounting for speed and density of the air. (You can also play with a thing called a Reynolds number which affects basic design of aircraft in various regimes, here if you are interested.)
The reports I am reading elsewhere indicate they have made it, although things got a bit dicey. From the sounds of it, they had RCS problems when they left the atmosphere. I do not know if Melvill regained orientation during the exoatmospheric flight or had to wait until the shuttlecock re-entry.
Early reports are that they made the altitude necessary for the X-Prize flight; now they have to do it again within the next two weeks. Hopefully the controls problem can be worked out.
It is a tribute to the design that the craft could tumble going out of the atmosphere and yet return intact. It is also a tribute to the pilot and an answer to those who think robots are the answer. Robots make craters. Pilots usually bring the ship back in one piece.
Now we wait for more detailed reports on the flight.
More It looks like the problem was not RCS. Melvill shut down the main engines 11 seconds early to stop the roll rate buildup. That sounds like some sort of main engine burn asymmetry. Again, we will just have to wait. But they do appear to have made the necessary altitude.
Update Melvill put the blame for the roll on himself. It was not a fault with the ship. Perhaps Melvill has just invented the space age equivalent of PIO (pilots will know what I’m talking about).
I just had a very short chat with ‘a trusted source’ 😉 out at the Mojave test facility. The weather is beautiful and the flight is expected to go. I welcome any of our honoured readers who work out there on the runway’s edge to report to us as events unfold.
Unless there has been a change in plans while I slept Burt Rutan’s SpaceShipOne will fly again in a few hours. This is the first of the required flights in their attempt at the Anseri X-Prize of $10 million. This time they will be flying with the required equivalent weight of passengers in the cabin. The prize clinching flight is scheduled for October 10th.
Some weeks ago the Da Vinci project in Canada announced a first flight date of October 2nd but I have not been following them closely. Armadillo Aerospace is still moving ahead at a steady pace: build a little, test a little, break a little, in the old fashioned hands-on engineering way. Peter Diamandes’ Zero G tourist flights – in an airplane! – are now flying and generating revenue.
The next prize, for the first orbital flight, has been announced by Robert Bigelow:
Company founder and millionaire Robert T. Bigelow told Aviation Week & Space Technology that he will announce as early as this week a new $50-million space launch contest called America’s Space Prize.
The objective is to spur development of a low-cost commercial manned orbital vehicle capable of launching 5-7 astronauts at a time to Bigelow inflatable modules by the end of the decade.
Bigelow has committed $25 million of his own to the purse.
All in all, 2004 is an exciting year for those of us who have dedicated our lives to opening the space frontier.
Note: I will unfortuneately not be present to photo blog this launch. At the moment I am damned fortuneate I can afford a pie for supper and I have been scrambling to keep my broadband connection bill paid. That is the ups and the downs of freelancing… with much assistance from customers who pay whenever or never. Freedom ain’t easy.
I have for some time been suspicious other big things were going on behind some scenes into which my vast network of spies and informers does not reach. I have had nods of confirmation when I voiced my opinions… but nothing specific as to precisely what was going on. The possibility of a Richard Branson and Burt Rutan alliance and something else secret going on in a Mojave hanger has been very much in the back of my mind.
Today, the Branson part of that became public fact. Whether there is more to it – and I believe there is – at least this much is now admitted openly. According to an article from the Dow Jones Newswire of 5:25 a.m this morning, emailed to me just a short while ago:
U.K. entrepreneur Richard Branson said Monday that Virgin Group (VGN.YY) plans to launch commercial space flights over the next few years.
Virgin has signed an agreement with pioneering aviation designer Burt Rutan to build an aircraft based on Rutan’s SpaceShipOne vessel, Branson said.
This I expected. I also have been wondering if they are secretly working on a next generation vehicle already. What I did not expect was major commercialization to happen quite this soon:
“Virgin has been in talks with Paul Allen and Bert throughout this year and in the early hours of Saturday morning signed a historical deal to license SpaceShipOne’s technology to build the world’s first private spaceship to go into commercial operating service,” Branson told a news conference.
The new service will be called Virgin Galactic and expects to fly 3,000 new astronauts within five years.
“Virgin Galactic will be run as a business, but a business with the sole purpose of making space travel more and more affordable,” Branson said. “Those privileged space pioneers who can afford to take our first flights will not only have the most awesome experience of their lives, but by stepping up to the plate first they will bring the dream of space travel for many millions closer to reality.”
Start saving me lads and lasses! We are bound for the stars and the government may go sit and rotate upon an aging ICBM.
UPDATE: Richard Branson was in the studio for the evening news on Channel 5 here; Channel 1 (which is really Channel 4!) gave far less coverage and used some subtle tricks to give it a negative spin.
First: Channel 5, my current favorite for UK news and not just beause the presenter is good looking. Which she is. Branson will be charging UKP 115K per person initially. He is buying into the venture with Allen and Rutan to the tune of UKP 15M. The first vehicles are to be ready for customers in three years. They will carry six. Five fare paying passengers and a pilot. It will retain the ‘shuttlecock’ re-entry mode. The fee will cover 3 days of pre-flight training with people like Buzz Aldrin; the flight will not be very long itself, with only a few minutes of freefall time. They will all fly past the 100km altitude which makes them civilian astronauts by current practice. Branson will fly on the first flight and says he might even take his very elderly father along if he is still healthy at age 90 because he does want to go. The first ship will be named… (drum roll)… the SS Enterprise.
The Ch5 presenter then went off into questions about UK rail schedules on Branson lines; the possibilities of polluting space – which Branson put into perspective by noting there are as many stars out there as there are grains of sand on the Earth; and the risk. Branson was up front that this is pioneering technology… but safe enough that he will fly, his elderly father might fly and even his kids would be allowed to go.
Ch1 on the other hand… the background music was rock with lyrics “Military Mission to Mars…” They played on the fear factor a great deal more and overall gave only a minute or two to the story. They were much more interested in what Gordon Brown had to say today.
It seems the Tuhoe tribe of New Zealand’s Maoris have decided to think big:
“In answer to my questions, they also confirmed their claims of absolute sovereignty over all air space to the heavens above. It was specifically stated that, once the Foreshore and Seabed legislation is resolved, they would be approaching Air New Zealand and other airlines to negotiate compensation for all incursions into their air space.
“They drew the parallel of other sovereign states where missiles are deployed to shoot down unauthorised aircraft. The group also confirmed that it would be approaching NASA and other authorities in respect of their satellites that orbit the Earth.
You simply could not make it up.
Anyone who follows defense issues closely is aware of the global air tanker problem. A) There ain’t enough of ’em, and B) What one’s there is are a gettin’ a mite long in the tooth.
Modern air warfare is highly dependant on tankers. Whether for long distance ferry operations, maximum range missions or extending battlefield loiter time, the tanker aircraft is a crucial element of modern warfare.
Many countries face the same problem. The UK finds itself with insufficient capacity to handle any sort of operational surge. For America it is an aging fleet of Boeing 707’s. Yes, you heard me. That classic 1957 jetliner that started it all. There were plans to upgrade via a leaseback arrangement for new Boeing aircraft, but congressional support collapsed amidst a scandal.
So, what does one call a situation like this? Why, a market opportunity of course!
Dublin-based Omega Air has teamed up with US company Evergreen International in a joint venture to launch the Global Airtanker Service (GAS) KDC-10.
GAS is pitching the KDC-10 airliner conversion as an interim solution for the faltering UK Ministry of Defence (MoD) Future Strategic Tanker Aircraft (FSTA) programme as well as targeting other potential customers such as the USAF and US Navy.
They will not be supplying green Jet fuel for Saint Paddy’s day.
If you have enjoyed the discussion about commercial space and the future here on Samizdata, you might find The Space Meetup of interest.
The Meetup website is a good example of ways in which internet entrepreneurs are building businesses on the community aspect of the internet, and in this case assisting the creation of a global community in the non-cyberworld.
Neil Armstrong and Buzz Aldrin set foot on the Moon.
After creating this wonderful capability, the Government did what Governments do. They squandered it. They threw it away.
The State is not your friend.
Greg Nemitz has been a ‘love him or hate him figure’ within the space community for quite some time. Many have wondered what he could possibly accomplish by claiming the Asteroid Eros and charging NASA parking fees to leave their probe on its surface. Some were outraged when he took NASA to court for the failure to pay… not outraged because they felt it was silly; outraged because they thought he might generate bad case law.
Now Greg is on to the next step up the legal ladder. I am beginning to see the outlines of what may be a fascinating and outrageous (in a good sense) plan to settle the issue of extraterrestrial property rights in the US Supreme Court.
I will let Greg speak for himself:
→ Continue reading: Forcing the issue
Rand Simberg is at the Return To The Moon Conference this weekend and is providing live blogging of the talks by key speakers. Frank Seitzen’s talk is of particular interest to those with a commercial space bent:
Taking questions now. Jeff Krukin: “Is there any sense that all of this could be made irrelevant by things happening in the private sector”?
Answer: “Yes, O’Keefe has met with Musk, and O’Keefe is very skeptical about the ability of the conventional space industry to do things affordably. Was particularly disturbed by cost estimates for OSP. Has been reaching out to the smaller players.”
“Estimate cost of getting to the Moon by 2020 is 64 billion dollars. They found nine billion for a down payment by 2009, but they won’t be able to afford it all without much lower costs from the private sector (and that doesn’t mean traditional contractors).”
I have known the disarticulated skeleton of this story for some time but this is the first I have seen it put together and with flesh on the bones.
You may remember this sad incident in the opening days of the Iraq Campaign: a US Patriot battery engaged and shot down a returning British Tornado. The official report on the incident is finally out:
IFF failure led to destruction of RAF Tornado
A Royal Air Force (RAF) Board of Inquiry investigating the destruction of an RAF Tornado GR.4A by a US Army Patriot missile during the March 2003 invasion of Iraq has concluded that the aircraft’s identification friend-or-foe (IFF) system had failed. However, it also criticised the missile-classification criteria used by the Patriot system, and the US Army’s Patriot rules of engagement, firing doctrine and crew training.
[Jane’s Missiles and Rockets – 28 June 2004]
If any of our readers has a link to a pdf of the original report – if such exists – I would be happy to include it here.
Editor: Kudos to Julian Taylor for the link to the MoD pdf file.
|
Who Are We? The Samizdata people are a bunch of sinister and heavily armed globalist illuminati who seek to infect the entire world with the values of personal liberty and several property. Amongst our many crimes is a sense of humour and the intermittent use of British spelling.
We are also a varied group made up of social individualists, classical liberals, whigs, libertarians, extropians, futurists, ‘Porcupines’, Karl Popper fetishists, recovering neo-conservatives, crazed Ayn Rand worshipers, over-caffeinated Virginia Postrel devotees, witty Frédéric Bastiat wannabes, cypherpunks, minarchists, kritarchists and wild-eyed anarcho-capitalists from Britain, North America, Australia and Europe.
|
Recent Comments