Tag: Dragon

The coolant systems failure on ISS might delay next week’s Cygnus cargo mission.

5:50 pm

The coolant systems failure on ISS might delay next week’s Cygnus cargo mission.

[T]he reduced cooling capability means there’s less of a safety margin on the station. Todd said mission managers don’t want to risk having the Cygnus come in for a hookup under such conditions. “While we’re sitting at one loop, we’re somewhat vulnerable,” he said.

The logic here escapes me. It suggests they will stop all cargo missions to ISS until the coolant problem is solved. However, what if they can’t solve it without a spacewalk? To do that spacewalk they have to deliver an upgraded spacesuit to the station to replace the suit that had water leak problems in July, and that delivery is not scheduled until late February when the next Dragon cargo launch is scheduled.

Maybe they are considering putting that replacement suit on the Cygnus capsule so it can arrive quickly. If so, that would justify delaying the Cygnus launch for a few days.

More details about the situation here.

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Planning the first launch abort test of the Dragon capsule.

2:12 pm

Planning the first launch abort test of the Dragon capsule.

The in-flight abort test will take place along Florida’s space coast. During the test, a Dragon spacecraft will launch on a standard Falcon 9 rocket and an abort command will be issued approximately 73 seconds into the flight. At that point, the spacecraft will be flying through the area of maximum dynamic pressure, or Max Q, where the combination of air pressure and speed will cause maximal strain on the spacecraft.

Dragon will be outfitted with about 270 special sensors to measure a wide variety of stresses and acceleration effects on the spacecraft. An instrumented mannequin, similar to a crash test dummy, also will be inside. The spacecraft’s parachutes will deploy for a splashdown in the Atlantic, where a ship will be pre-positioned for simulated rescue operations. The test spacecraft will be returned to Port Canaveral by barge so data can be retrieved and incorporated into the system’s design.

The test is presently scheduled for the summer of 2014.

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The next Dragon flight has now been scheduled for no earlier than February 11.

8:13 am

The next Dragon flight has now been scheduled for no earlier than February 11.

The next flight of SpaceX’s Dragon has been realigned to a February 11, 2014 NET (No Earlier Than) launch date. The launch will mark Dragon’s first ride on the upgraded Falcon 9 v.1.1 rocket, potentially sporting landing legs, as Elon Musk plans his next attempt at proving the rocket’s ability to return its stages back to Earth for reuse.

SpaceX must first launch two commercial satellites with the upgraded Falcon 9 before its NASA flight. Also, 2014 will be a very business year for the rocket, as it is scheduled to send three cargo missions to ISS plus launch eight commercial satellites.

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Assuming the first demo berthing of Orbital Sciences’ Cygnus capsule to ISS goes well in September, NASA has now scheduled the subsequent cargo missions of Cygnus and Dragon for December and January respectively.

9:22 am

Assuming the first demo berthing of Orbital Sciences’ Cygnus capsule to ISS goes well in September, NASA has now scheduled the subsequent cargo missions of Cygnus and Dragon for December and January respectively.

The second link above also provides some interesting details about the cargo that Dragon will carry in January.

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Dragon has been successfully berthed with ISS.

9:05 am

Dragon has successfully berthed with ISS.

The naysayers will focus on the thruster problems on Friday. The yaysayers will focus on the fix and berthing today. The bottom line, however, is that this mission once again proves that SpaceX is a real player in the space business. Every other company has to match its achievements, most especially in price. The result will be the eventually lowering in the cost to low Earth orbit, which will then make all things possible.

And in fact, we are already seeing this, with the appearance of many new private companies or organizations, proposing all sorts of new space efforts, such as mining asteroids or sending people to Mars. The lower cost allows dreamers to consider their wild new ideas more doable. And they then go ahead and try to do it.

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SpaceX has announced that they now have all of Dragon’s thrusters operating and are go for docking with ISS.

4:21 pm

SpaceX has announced that they now have all of Dragon’s thrusters operating and are go for docking with ISS.

They have not announced when the docking will occur, but with the solar panels operating the capsule can function in orbit for a considerable time, giving them breathing room. And time will be necessary as both NASA and the Russians are nervous about letting any spacecraft approach ISS and will want a good number of tests to make sure all is well. The Russians are especially nervous, since they had the unfortunate experience of several collisions when they operated their space station Mir.

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After successfully reaching orbit, there appears to be a problem with the Dragon capsule.

8:45 am

Bad news: After successfully reaching orbit, there appears to be a problem with the Dragon capsule.

They have not yet released any information about what happened. The link above says that it appears to be related with the communications link, but NASA and SpaceX have as yet released no information other than to say they will hold a press conference in a few hours.

UPDATE: it appears the problem is with Dragon’s thrusters. Engineers have delayed the deployment the capsule’s solar panels while they try to get the thrusters activated. See the second link above.

UPDATE: Solar panels have been successfully deployed.

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How the Bigelow module added to ISS will change the space equation.

9:45 am

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.

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