Full Augustine Commission Report - Surprises from the Full Review of Human Spaceflight - Popular Mechanics:
"6) NASA is handicapped by rules that limit the way it does business.
Unlike other federal departments, NASA's relationship with the industrial world is antiquated, discourages innovation and suffers from inflexible bureaucracy."
Tuesday, October 27, 2009
Augustine Commission has harsh conclussions for NASA
Tuesday, September 1, 2009
Next stop before Mars? Perhaps L2?
Astronauts and technicians working and living at Lagrange points will develop the technologies needed to change the Mars mission from a visit into a colony. There is immediate, profitable work to be done at L2. Industry and people will always follow profits, and in this case civilization benefits enormously.
Why future astronauts may be sent to 'gravity holes' - space - 29 August 2009 - New Scientist:
". . .
Lagrange, or Lagrangian, points are great swathes of space where the gravitational acceleration from the Earth and the sun are exactly equal, letting objects stick there with very little effort.
Because they're far from warm stars and planets, they make useful havens for ultra-cold telescopes that measure fluctuations in the temperature of deep space.
The Wilkinson Microwave Anisotropy Probe (WMAP), which measures radiation from the big bang, lives at a Lagrange point called L2 more than 1 million kilometres away. The successor to the Hubble Space Telescope, the massive James Webb Space Telescope, will also be sent to the spot, which lies in line with the sun and Earth . . .
. . .But what would humans do there? One useful task is repairing and upgrading the new telescopes, like astronauts have done five times with Hubble.
"Hubble is probably the most productive scientific facility ever developed in the history of science, and it's largely because every four or five years, we take out the old instruments ... and go up with brand-new instruments that address different questions and embrace the latest technology," Lester says. "If we want to have humans having anything to do with these new telescopes, we really have to think about Lagrange points."
. . .It takes surprisingly little energy to travel between these points. That's because massive bodies like the sun and planets have gravitational fields that resemble mountains and hills, but Lagrange points are all at gravitational lowlands. Once set on the right path, spacecraft can coast along the gravitational contours of space between these lowlands, as if travelling on an interplanetary superhighway.
"Going back and forth between Earth-sun Lagrange points and Earth-moon Lagrange points is pretty much a matter of giving the thing a swift kick," Lester told New Scientist.
Future astronauts could repair telescopes at a staging area at the nearest Earth-moon Lagrange point and send them sailing back to L2 when they're done. They could also assemble large telescopes or spaceships at the staging area and then send them out to farther-flung destinations.
. . .Others see Lagrange points as stepping stones on the way to places like Mars.
"It's a convenient crossroads on the way to a place you really want to visit," says Lou Friedman, founder and executive director of the Planetary Society, a space advocacy group that supports sending astronauts to Mars.
"The place we all want to go is Mars. Stepping out into interplanetary space, Lagrange points present the nearest milestone to Earth that's still beyond the moon," Friedman told New Scientist.
Going to L2 would take about a month and communications from Earth would take about four seconds to arrive at L2, while a trip to Mars would take at least six months and would involve communications delays of about 20 minutes."
L5 Society - Wikipedia, the free encyclopedia:
"The name comes from the L4 and L5 Lagrangian points in the Earth-Moon system proposed as locations for the huge rotating space habitats that Dr. O'Neill envisioned. L4 and L5 are points of stable gravitational equilibrium located along the path of the moon's orbit, 60 degrees ahead or behind it.
An object placed in orbit around L5 (or L4) will remain there indefinitely without having to expend fuel to keep its position, whereas an object placed at L1, L2 or L3 (all points of unstable equilibrium) may have to expend fuel if it drifts off the point."
Tuesday, August 25, 2009
Private Spaceflight a boon to Scientists
Scientists go suborbital - Cosmic Log - msnbc.com:
"The killer app for private spaceflight, at least once the millionaires and celebrities have had their turn, may well be scientific research.
'You spark this industry with tourists, but I predict in the next decade the research market is going to be bigger than the tourist market,' says Alan Stern, a planetary scientist at the Colorado-based Southwest Research Institute who is heading up a committee to link up researchers with future suborbital spaceflights.
Until recently, suborbital space trips were marketed primarily as the penultimate high for well-heeled thrill-seekers.
. . .
Virtually all the major players in the still-gestating suborbital industry now realize that research flights could make the difference in their drive to profitability.One of the clearest signs of that came last month, when an Arab investment group bought a $280 million stake in British billionaire Richard Branson's Virgin Galactic venture, putting special emphasis on the capability to fly scientific experiments and deploy small satellites.
. . .
There are other options for space research, of course, ranging from zero-G airplane flights to suborbital sounding rockets to unmanned orbital and deep-space flights to space station experiments. So why would researchers, and even NASA, opt for rides on private spaceships that have yet to be built?
Cost is just one reason, Stern told me. A $200,000 ticket for a space ride may sound expensive for a tourist, but it's peanuts compared to the $2 million or more charged for the launch of a NASA sounding rocket, he said.
. . .
"If you could go at [an experiment] every day of the year and see the atmosphere changing, how powerful would that be?" Stern said. "This becomes a laboratory-like experience."
Piloted spaceships are also likely to provide a more robust environment for research. Scientists would be more likely to get their experiment back and less likely to lose it in a hard landing.
. . .
Experimenters could also fly along with their experiments - not just once, but multiple times. "Graduate students will be doing their own Ph.D.s in these vehicles," Stern predicted.
. . .
"This is so cheap, and the applications are so good, that I expect NIH, NSF, DOD, DOE, a whole slew of federal agencies will have space efforts, just like federal agencies have boats and airplanes that they use," he said. "Literally, Aruba could afford to have a spaceflight program. ... Every country that wants to have their own space program with astronauts can go.""
Monday, August 17, 2009
Bigelow Proposes "Orion Lite" Spaceship
Space Hotel Visionary Proposes Modified "Orion Lite" Spaceship for NASA | Popular Science:
"Future space hotel moguls can get nervous when NASA's next-generation spaceship plans begin to founder. So one company has come up with a modified 'Lite' design of the planned Orion vehicle to carry astronauts and paying passengers into orbit.
Bigelow Aerospace has long envisioned launching inflatable space station called Sundancer, and so improving passenger access to low Earth-orbit has remained a priority."
Lots of interesting links in this article . . .
Monday, July 27, 2009
Dealing with hazardous space debris
Building an Electronic Fence to Track Space Junk | Popular Science:
"Thousands of manmade pieces of space junk orbit the Earth, threatening astronauts and unmanned missions alike. Now the U.S. Air Force Space Command wants an electronic 'space fence' that could track any orbital object larger than two inches in width.
Such a surveillance system would require a global network of sensitive S-band radar stations that operate in the gigahertz range of the electromagnetic spectrum. The U.S. Air Force currently relies on a system dating back to 1961, which only covers the continental United States, and can only track objects 20 inches in width or larger.
The growing cloud of space debris in Earth orbit includes more than 16,000 pieces of debris larger than four inches in width. And that only seems likely to grow . . . "
Beyond tracking the debris, some folks are coming up with a variety of methods to destroy or collect it. I'm in favor of collecting the debris to sell as souvenirs, but that technology may be too pricey.
Taking Out the Space Trash | Popular Science:
"Scientists at NASA and private companies have devised several ways for clearing the sky. Although some methods are admittedly outlandish, says Nicholas Johnson, the chief scientist for orbital debris at NASA’s Johnson Space Center in Houston, Texas, a few are possible with today’s technology.
One early idea was to have robotic trash collectors shove large pieces of junk through the atmosphere so that they mostly burn up before hitting the ground. But the fuel costs for destroying a significant amount of debris with such craft has quashed this approach.
A more feasible plan is to attach miles-long “electrodynamic tethers,” wound on a spool, to all new satellites. Once a satellite ends its mission, it would deploy the cable and Earth’s magnetic field would induce an electric current in it. This interaction imparts a force on the craft that pushes it through the atmosphere until most of it burns up harmlessly,"
Monday, June 22, 2009
Spaceport America construction starts in New Mexico
Eventually life on Earth will be improved as we tap the wealth of our solar system. Privatization of space travel is an essential component of this transition. We're seeing privatization happen now.
Construction Begins on Spaceport America | Popular Science:
". . .
For everyone looking to hop the next commercial flight to space, your departure gate has finally been announced. Almost two years after the first plans were announced, construction has finally begun on Spaceport America. The spaceport, which will serve as the launch and landing pad for Virgin Galactic flights, is the first of its kind anywhere in the world, and represents the first serious commitment of infrastructure to manned commercial spaceflight.
. . .
Currently, Virgin Galactic only has two space ships, so it will probably be sometime before the facility experiences O'Hare and LaGuardia level traffic."
Friday, February 13, 2009
Satellites Collide Scattering Debris In Space
U.S.-Russian Satellite Collision Sends Debris Flying - NYTimes.com:
"For decades, space experts have warned of orbits around the planet growing so crowded that two satellites might one day slam into one another, producing swarms of treacherous debris.
It happened Tuesday. And the whirling fragments could pose a threat to the International Space Station, orbiting 215 miles up with three astronauts on board, though officials said the risk was now small.
“This is a first, unfortunately,” Nicholas L. Johnson, chief scientist for orbital debris at the National Aeronautics and Space Administration, said of the collision.
It happened some 490 miles above northern Siberia, at around noon Eastern time. Two communications satellites — one Russian, one American — cracked up in silent destruction. In the aftermath, military radars on the ground tracked large amounts of debris going into higher and lower orbits.
. . .
The American satellite was an Iridium, one of a constellation of 66 spacecraft. Liz DeCastro, corporate communications director of Iridium Satellite, based in Bethesda, Md., said that the satellite weighed about 1,200 pounds and that its body was more than 12 feet long, not including large solar arrays.
. . .
“There are actually debris from this event which we believe are going through space station altitude already,” he said. The risk to the station, Mr. Johnson added, “is going to be very, very small.” In the worst case, he said, “We’ll just dodge them if we have to. It’s the small things you can’t see that are the ones that can do you harm.”
In Houston, International Space Station controllers have often adjusted its orbit to get out of the way of speeding space debris, which can move so incredibly fast that even small pieces pack a destructive wallop."
Monday, December 8, 2008
Obama Project: Space Solar Power (SSP)?
An interesting idea in comments following this article is the use of a beanstalk that can be built with conventional materials IF it ends 1 Diameter of Earth from the surface. We could use conventional (but reusable) chemical rockets to get materials to this low orbit, and then use beanstalks to lift them into the high orbits - saving a large part of the transportation cost, and do-able with today's technology. Another benefit is that such a beanstalk would be much less vulnerable to terrorist attacks.
Political transitions are a time to reflect and change policies - now is the time for the new administration to consider kick-starting the SSP industry. It would cost us less than many of the bailouts currently in the news, and provide enormous on-going benefits. The jobs created for such a program would be high-tech, and the product (energy) would be exportable.
Obama-Biden Transition Project: Space Solar Power (SSP) -- A Solution for Energy Independence & Climate Change | SpaceRef - Space News as it Happens:
"A National Security Space Office (NSSO) study concluded in October of 2007 that 'The magnitude of the looming energy and environmental problems is significant enough to warrant consideration of all options, to include ... space-based solar power.' This NSSO report also concluded that SSP has 'enormous potential for energy security, economic development, improved environmental stewardship, advancement of general space faring, and overall national security for those nations who construct and possess a (SSP) capability.'
We urge the next President of the United States to include SSP as a new start in a balanced federal strategy for energy independence and environmental stewardship, and to assign lead responsibility to a U.S. federal agency.
SSP Falls through the Cracks as Nobody is Responsible: No U.S. federal agency has a specific mandate or clear responsibility to pursue SSP. The U.S. Department of Energy (DOE) says SSP is a space project, and thus NASA's job. NASA says SSP is an energy project, and thus DOE's job. The NSSO-report found that SSP ''falls through the cracks' of federal bureaucracies, and has lacked an organizational advocate within the US Government.'
SSP has Significant Long-Term Advantages: SSP is unusual among renewable energy options as it satisfies all of the following criteria:
Immensely Scalable -- SSP can scale to provide the energy needs of the entire human civilization at America's standard of living. Most other near-term renewable options are strictly limited in scalability. As the NSSO report states "A single kilometer-wide band of geosynchronous Earth orbit experiences enough solar flux in one year to nearly equal the amount of energy contained within all known recoverable conventional oil reserves on Earth today."
Safe Global Availability -- Nuclear power technology cannot be safely shared with most of the countries on this planet because of proliferation concerns.
Steady & Assured -- SSP is a continuous, rather than intermittent, power source. It is not subject to the weather, the seasons, or the day-night cycle.
No Fundamental Breakthroughs -- SSP does not require a fundamental breakthrough in either physics or engineering, such as those required by fusion.
Highly Flexible and Optimal for Export -- SSP could enable America to become a net energy exporter. We could be the world's largest exporter of energy for the 21st and 22nd Centuries, and beyond."
Wednesday, November 21, 2007
We need new pioneers
NASA - Why Explore Space?:
" ... for the foreseeable future, space travel is going to be expensive, difficult and dangerous. But, for the United States, it is strategic. It is part of what makes us a great nation. And the report declared that if we are going to send humans into space, the goals ought to be worthy of the cost, the risk and the difficulty. A human spaceflight program with no plan to send people anywhere beyond the orbiting space station certainly did not meet that standard.President Bush responded to the Columbia report. The administration looked at where we had been in space and concluded that we needed to do more, to go further. The result was the Vision for Space Exploration, announced nearly three years ago, which commits the United States to using the shuttle to complete the space station, then retiring the shuttle and building a new generation of spacecraft to venture out into the solar system. Congress has ratified that position with an overwhelming bipartisan majority, making the Vision for Space Exploration the law of the land. "
Permanent populations on the Moon, Mars, & in the asteroid belt will one day improve life on Earth. This can come in part by moving some industrial processes off planet, but it will come mostly from the application of new knowledge - lessons we'll never learn if we aren't out there trying things - being pioneers.
Space Station's Newest Module; Harmony
NASA isn't getting a great deal of news coverage for the great progress that has been made in assembling the ISS this year. Enthusiasts hear about it from sites such as at http://www.space.com/ & http://www.nasa.gov/, but I wonder if kids are hearing about it in school anymore. I hope so.SPACE.com -- Spacewalkers Outfit Space Station's Newest Room:
"Spacewalking astronauts primed the International Space Station's (ISS) newest room for orbital flight Tuesday as they prepare to host a visiting NASA shuttle next month.Expedition 16 commander Peggy Whitson and flight engineer Dan Tani spent more than seven hours wiring up about half of the power, heater and cooling lines needed to prepare the station's new Harmony connecting node for the planned Dec. 6 launch of a European-built lab. They will connect the other half during another spacewalk on Saturday. "