Tag: SpaceX

The competition heats up: SpaceX on Tuesday revealed that last week it has completed the standard static fire testing of the recovered Falcon 9 first stage that it plans to relaunch in March.

A March launch would mean an 11-month turnaround, which is far from optimal, but understandable for the first time. SpaceX’s founder and chief executive, Elon Musk, has acknowledged the company must do better in the future if resuable flight is to become economically viable. He says the next—and likely final—iteration of the Falcon 9 rocket will be optimized for reuse. “Block 5 is the final upgrade of the Falcon architecture,” he tweeted earlier this year. “Significantly improves performance & ease of reusability. Flies end of year.”

It now seems likely that SpaceX will fly the landed boosters it currently has, at most once or twice, before retiring them, instead of multiple times. Although the company hasn’t elaborated on the problems with the engines, booster structure, or composite materials that have shown wear and tear after their orbital launches and returns, Musk is confident that changes to the Block 5 version of the rocket will solve the problem. “I think the F9 boosters could be used almost indefinitely, so long as there is scheduled maintenance and careful inspections,” he has said.

In other words, SpaceX has had — for the first time in history — the opportunity to inspect a number of used first stage rockets, and that precious knowledge is making it possible for them to upgrade the stage design to make future stages more hardy. In fact, those future stages won’t be stages, but reusable vessels that SpaceX could even name if it wished.

Because the launchpad at Kennedy is not quite ready for the planned February 3 launch of a commercial satellite, SpaceX has rearranged its launch manifest to switch that launch with the next Dragon mission to ISS, essentially delaying their next launch by two weeks.

With [launchpad] 39A still not ready to debut in its new role with SpaceX, the first mission set to launch from this pad – the Falcon 9 launch with EchoStar 23 – was pushed to the right a number of times. Although 39A is very close to being ready to conduct launches, EchoStar 23’s launch date was deemed to be too close to the mid-February target for the CRS-10 Dragon mission.

SpaceX and NASA discussed the situation on Friday night, before deciding it would be prudent to place EchoStar 23’s launch after CRS-10, allowing engineers to finalize modification and checkout work on the famous pad and simultaneously avoid a potential delay to the important Dragon mission to the Station.

The real problem here is that SpaceX had planned to have two working launchpads by this time, but doesn’t because their first pad was damaged in the September 1 Falcon 9 launchpad explosion. The consequences is that, for at least the next month, they will not be able to set a pace of a launch every two weeks.

The competition heats up: Even as SpaceX moves forward on an intense launch schedule, with launches planned for January 26 and February 8, it has begun preparations for a late February commercial launch that will be the first to reuse a first stage.

The first stage assigned to SES 10’s launch first flew April 8, 2016, with a Dragon supply ship on a logistics launch to the International Space Station. After detaching from the Falcon 9’s second stage, which continued into orbit, the 15-story first stage booster descended to a vertical landing on SpaceX’s offshore platform a few minutes after liftoff, making the first time the company recovered a rocket intact at sea.

The landing on SpaceX’s barge, or drone ship, last April came four months after the first-ever touchdown of a Falcon 9 first stage on land at Cape Canaveral. That vehicle is now on display outside SpaceX’s headquarters in Hawthorne, California.

This pace is calling for a launch every two weeks. It will spectacular if SpaceX can keep that up, but such a pace is not really unprecedented. The Soviets at their height managed it at times quite successfully.

The recovered Falcon 9 first stage from Saturday’s successful commercial launch has arrived in the port of Los Angeles.

Some nice pictures of the stage at the link.

One local news source now reports that SpaceX’s Falcon 9 launch has been delayed one day until Monday.

While officials announced at the start of week their plans to aim for a 10:28 a.m. Sunday departure, notices warning boaters and pilots of an upcoming launch now say the mission is targeting Monday, Jan. 9. The one-day delay means the launch time is expected to be a few minutes earlier to ensure the satellites are placed where needed in space.

This news has not yet been confirmed. The delay is now official.

SpaceX today released its final investigation results on the September 1 Falcon 9 launchpad explosion, and announced that they have now scheduled their next launch for January 8 out of Vandenberg Air Force Base.

As expected, the cause is the accumulation of solid oxygen in the wrappings of the helium bottle tank (COPV) inside the oxygen tank of the first stage. The following is their announced solution:

The corrective actions address all credible causes and focus on changes which avoid the conditions that led to these credible causes. In the short term, this entails changing the COPV configuration to allow warmer temperature helium to be loaded, as well as returning helium loading operations to a prior flight proven configuration based on operations used in over 700 successful COPV loads. In the long term, SpaceX will implement design changes to the COPVs to prevent buckles altogether, which will allow for faster loading operations.​

Their vagueness in describing the “prior flight proven configuration” is likely to protect proprietary information, but the overall solution suggests that their fuel loading operations will take longer.

The January 8 launch date was simultaneously announced on twitter.

SpaceX has begun placing the ten Iridium satellites inside their Falcon 9 housing in preparation for its next launch, now planned for no earlier than January 7.

The first 10 satellites for Iridium’s next-generation mobile voice and data relay network have been fueled, joined with their deployment module and encapsulated inside the clamshell-like nose cone of a SpaceX Falcon 9 booster for launch as soon as next week from Vandenberg Air Force Base in California. SpaceX and Iridium have not announced a target launch date, but engineers are aiming to have the mission ready for liftoff by Jan. 7. That schedule is still very preliminary.

An official target launch date is pending the Federal Aviation Administration’s approval of the SpaceX-led investigation into the explosion of a Falcon 9 rocket on a launch pad at Cape Canaveral on Sept. 1, which destroyed the Israeli-owned Amos 6 communications satellite awaiting liftoff a few days later.

The article also has this interesting tidbit:

After the Falcon 9 rocket completes its pre-flight “static fire” test on the launch pad — the same test that resulted in the explosion in Florida on Sept. 1 — the 10 Iridium Next satellites will be mated with the booster for liftoff.

This suggests that SpaceX is changing its launch procedures, whereby before it would do the static fire dress rehearsal with the payload already loaded on the rocket. For this launch at least they are going to do that dress rehearsal before installing the payload on the rocket.