The competition heats up: On Friday Aerojet successfully completed a hotfire test of the AJ26 engine to be used by Orbital Sciences’ Antares rocket.
Tag: spaceflight
New images of a dry river on Mars.
New images of a dry river bed on Mars.
Reull Vallis, the river-like structure in these images, is believed to have formed when running water flowed in the distant martian past, cutting a steep-sided channel through the Promethei Terra Highlands before running on towards the floor of the vast Hellas basin. This sinuous structure, which stretches for almost [1000 miles] across the Martian landscape, is flanked by numerous tributaries, one of which can be clearly seen cutting in to the main valley towards the upper (north) side.
An expensive Frankenstein in space
The European Space Agency and NASA have confirmed that the Europeans will be building the service module for Orion.
Several points:
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A software issue has forced a delay in the robot refueling experiment on ISS.
A software issue has forced a delay in the robot refueling experiment on ISS.
A (new) Mexican standoff at the old spaceport.
A (new) Mexican standoff at the old spaceport.
Messier not only provides a detailed analysis of the negotiations on-going between Virgin Galactic and Spaceport America over liability issues, he also provides context, much of which is not encouraging. For example,
SpaceShipTwo is set to begin its first powered test flights later this year using a “starter motor” that will be smaller than the full-scale hybrid engine that will be used for flights into space. The motor will allow pilots to test the space plane in the transonic flight region, which would be a major step forward.
Whether the full-scale RocketMotorTwo engine, powered by nitrous oxide and rubber, will be ready to fly this year is an interesting question. There have been stories for years – persistent, consistent and never really denied – that the motor just doesn’t work very well. Hybrid motors can function effectively for smaller vehicles, such as the smaller SpaceShipOne vehicle that flew in 2004, but are difficult to scale up. SpaceShipTwo is three times larger than its predecessor.
Meanwhile, there are the liability questions which might force Virgin Galactic, and all other private space companies, to flee New Mexico. The analysis suggests that the taxpayers of New Mexico might have paid for a very expensive spaceport that might never pay for itself.
How the Bigelow module added to ISS will change the space equation.
How the Bigelow module added to ISS will change the space equation.
Looking a bit further down the road, the potential launch of a Bigelow BEAM module, particularly if it takes place on a SpaceX Falcon 9 booster could be a harbinger of much greater things to come. As Mars visionary Robert Zubrin and many others have observed, the addition of an inflatable module similar to that being considered for the station, to the SpaceX Dragon 2.0 capsule greatly increases the available space and capability of a future Dragon to serve both as a Mars transfer vehicle, and / or surface habitat. Add in the introduction of Falcon Heavy, and the pieces for an alternate vision of far more affordable (and timely) inner system exploration begin to fall into place.
Stewart Money has it exactly right. I have never accepted the claim that Orion was the only spacecraft being built that would be capable of going beyond low earth orbit. Add the right components to any manned vehicle, and you have an interplanetary spaceship.
The trick of course is adding the right components. For both Orion and Dragon, the present assumptions are much too nonchalant about what those components are. For humans to prosper on an interplanetary mission, the vessel requires a lot more than a mere capsule and single module.
Spectacular footage from the two GRAIL spacecraft just prior to their lunar impact.
Fly me to the Moon — and then crash! Spectacular footage from the two GRAIL spacecraft just prior to their lunar impact.
The demo mission of robotic refueling of satellites on ISS goes forward this month.
Robot refueling of satellites: The demo mission on ISS goes forward this month.
As much as I celebrate this work, conceived and designed by engineers at the Goddard Space Flight Center (the same people who ran the missions that maintained the Hubble Space Telescope), I worry that nothing will come of it. The demo mission itself is designed to duplicate exactly the refueling of several climate satellites already in orbit whose lifespans are ending merely because they are running out of fuel. If the ISS demo succeeds, the next natural step would be to plan an actual robotic mission to refuel these satellites.
The worrisome part is that NASA rarely follows through on this kind of research. For example, the agency did tests of an ion engine back in the early 1970s, and it wasn’t until the late 1990s before they finally flew a mission using that technology. Worse, the federal budget situation probably means there is no money to fly such a mission.
Hopefully, some private company will take a look at this engineering, which is all in the public domain, and decide to use it for their own purposes.
The reason why NASA’s planetary probes still use black and white photography.
The reason why NASA’s planetary probes still use black and white photography.
A close and realistic look at SpaceX’s schedule for 2013.
A close and realistic look at SpaceX’s schedule for 2013.
Not surprisingly, it is expected that the company will fail to achieve all these scheduled launches and milestones. It is also likely that the company will achieve most, given its very successful track record so far.
New research suggests that the high radiation experienced by astronauts on interplanetary journeys could accelerate the onset of Alzheimer’s.
New research suggests that the high radiation experienced by astronauts on interplanetary journeys could accelerate the onset of Alzheimer’s.
Some caveats: This research was done on Earth with mice. It also assumes that it will be impossible to protect astronauts from all types of radiation while on their journey.
Orbital Sciences will do a hot fire launchpad test of its Antares rocket in January, followed by a test launch to orbit in February, and a first flight of the Cygnus capsule in April.
Schedule update: Orbital Sciences will do a hot fire launchpad test of its Antares rocket in January, followed by a test launch to orbit in February, and a first flight of the Cygnus capsule in April.