Tag: Orbital Sciences

All systems are now go for the first launch of Antares at 5 pm (Eastern).

1:43 pm

All systems are now go for the first launch of Antares at 5 pm (Eastern).

We have liftoff. All is nominal. The first stage has shut down and separated after operating perfectly. The fairings protecting the dummy payload have separated perfectly, which for Orbital is a big deal, as they have had problems with fairing shrouds on previous launches with other rockets.

The second stage engine has ignited, as planned. All is nominal, as the launch director keeps saying.

The second stage engine has shut down, as planned. Antares is in orbit. After a 90 second pause the dummy payload has separated, as planned.

A perfect launch. The United States now has two companies capable of putting cargo and payloads into orbit at reasonable prices. The competition continues to heat up.

3 comments

The Antares hot fire test of the rocket’s first stage was successfully completed tonight.

9:03 pm

The competition heats up: The Antares hot fire test of the rocket’s first stage was successfully completed tonight.

The 29-second hot fire test took place at 6:00 p.m. (EST) on February 22, 2013 at the Mid-Atlantic Regional Spaceport’s (MARS) Pad 0A, which was designed and built over the last several years to accommodate liquid-fuel space launch vehicles. The primary goals of the test were to ensure that the launch complex’s fueling systems and the Antares stage one test article functioned properly in a fully operational environment, that engine ignition and shut down commands operated as designed, and that the dual AJ26 first stage engines and their control systems performed to specifications in the twin-engine configuration. The test included a full propellant loading sequence, launch countdown and engine ignition operation. The pad’s high-volume water deluge system flowed throughout the entire period of the test to protect the pad from damage and for noise suppression.

The first stage will now be prepped for a full scale test launch of Antares, expected in about six weeks. If that is successful, Orbital Sciences will then follow with a flight of the Cygnus capsule to ISS.

Leave a comment

The hot fire test of the Antares first stage tonight was aborted at the last second.

11:41 pm

The hot fire test of the Antares first stage tonight was aborted at the last second.

The planned first stage propulsion system “hot fire” test of Orbital’s new Antares medium-class rocket was halted in the final seconds of the countdown by the rocket’s flight computer, which detected an anomalous condition. The Antares team will evaluate the data from the test to determine the nature of the abort. A new date for the test has not been determined.

With any new rocket this kind of thing is to be expected. The concern here is the tight schedule that Orbital Sciences is under to get Antares and Cygnus operational. Long delays will not be good for them, considering the politics in Congress. Every delay will be used by certain politicians to get this program cut so the money can go to the very expensive Space Launch System that feeds the jobs in their districts.

Update: It appears the issue was that the computer detected a low pressure reading and aborted the burn. (A similar issue occurred on several of SpaceX’s early launches as was very quickly corrected.) A rescheduled hot burn is expected to take place next week.

Leave a comment

Orbital Sciences has published an updated schedule for its Antares rocket and Cygnus cargo capsule.

12:13 am

The competition heats up: Orbital Sciences has published an updated schedule for its Antares rocket and Cygnus cargo capsule.

Key dates:
February: Hotfire test of the Antares first stage.
March: First test flight of Antares.
May/June: First test flight of Cygnus, on Antares, docking with ISS.
Third quarter 2013: First operational flight of Cygnus to ISS.

Leave a comment

NASA used Orbital Sciences’ Taurus 2 rocket for the failed launch of its Glory climate satellite in 2011, even though the agency knew the company had not fixed the problem that caused the loss of the Orbiting Carbon Observatory in 2009.

9:01 am

NASA used Orbital Sciences’ Taurus XL rocket for the failed launch of its Glory climate satellite in 2011, even though the agency knew the company had not fixed the problem that caused the loss of the Orbiting Carbon Observatory in 2009.

The investigators believed there was as much as a 50% chance the faulty component — a fairing separation system for ejecting the protective shroud that covered the satellite during launch — would fail again. Sadly, it did, destroying Glory. More significant for the future, however is this:

Other Orbital vehicles, including the air-launched Pegasus and a new Antares rocket, use a version of the same fairing separation system that is most likely responsible for the combined $700 million loss of two key climate-study satellites. Orbital’s original name for Antares was Taurus II.

So far, NASA has not accepted the Antares shroud-separation configuration for operational flights. Dulles, Va.-based Orbital says it has made a number of changes to its frangible joint fairing separation system in the wake of the Glory launch failure, including modifications to the frangible rail used on Antares. The company is developing that rocket under NASA’s Commercial Orbital Transportation Services (COTS) program to carry cargo to the International Space Station (ISS).

If NASA isn’t satisfied with Orbital’s design changes to this system, it could significantly delay the launch of Cygnus and Antares to ISS.

Update: I had mistakenly referred to the Taurus 2 in the first sentence when the rocket used to launch Glory and OCO was the Taurus XL. This is now corrected.

Leave a comment

SpaceX and Stratolaunch have parted ways.

4:10 pm

SpaceX and Stratolaunch have parted ways.

In the original plan, Stratolaunch would build the first stage, the biggest airplane every built, which would lift the second stage, SpaceX’s Falcon 9, into the air. It appears, however, that the modifications required to make the Falcon 9 work in this configuration were not in SpaceX’s interest, so the company backed out and Stratolaunch has instead made a deal with Orbital Sciences to provide the second stage rocket.

2 comments

Orbital Sciences has delayed the first demo launch of its Cygnus cargo capsule until March 2013 at the earliest.

10:16 pm

Orbital Sciences has delayed the first demo launch of its Cygnus cargo capsule until March 2013 at the earliest.

The schedule for Antares itself has not been delayed. Launchpad tests are still scheduled to begin next week, with the first engine test set for early November, and the first launch of Antares set for December.

They don’t explain the reason for the Cygnus delay. I suspect they simply decided to be realistic. It was always unlikely that the first Cygnus launch would follow only a month after the first Antares launch, especially if there are any kinks in that launch.

Leave a comment

The rollout to the launchpad of the first stage of Orbital Sciences’ Antares rocket has been delayed until Saturday.

11:21 pm

The competition heats up: The rollout to the launchpad of the first stage of Orbital Sciences’ Antares rocket has been delayed until Saturday.

The rollout had been scheduled for today, but had to be scrubbed due to a battery problem in the transporter for moving the rocket. Once on the pad, they will then spend the next 4 to 6 weeks preparing for a hold down firing test. And if that test goes well, they will follow it up with the first launch of Antares before the end of the year.

2 comments
1 2 3 4 5 6