Showing posts with label Of Course I Still Love You. Show all posts
Showing posts with label Of Course I Still Love You. Show all posts

Monday, May 9, 2016

SpaceX Just Landed A Second Rocket On A Drone Ship - At Night!


Friday, May 6, 2016 was National Space Day, a great annual day of celebration and acknowledgment of our human future in space. My Twitter feed was abuzz with info from space companies, including NASA, hosting special events and exhibits for the day. This inspired my following tweet, and brings us to the topic of this blog post:



Yes, SpaceX landed another spent rocket stage on an ocean-going barge, the "Of Course I Still Love You", during high waves and wind, with the rocket coming in faster and hotter than it did last month. This time, SpaceX was tasked with delivering a Japanese satellite, the JCsat-14, into high geo-stationary transfer orbit at about 25,000 mi (36,000 km) above Earth's surface. Compare this to last month's successful launch and landing mission, when Falcon traveled into low-earth orbit (LEO) "only", ca. 250 mi (400 km) above our planet, to re-supply the International Space Station. Consequently, last Friday, Falcon was traveling many thousands kilometers faster on ascent than it did last month and also had less fuel available for those critical pre-landing burns upon its return. And yet, Falcon 9 landed perfectly, under harsh conditions, standing proud and tall on its landing barge, still breathing fire. And you know what? I'm starting to feel less and less nostalgic about the Space Shuttle.


Image credit: SpaceX
Falcon 9 with its JCsat-14 satellite payload on the pad at Cape Canaveral, awaiting launch. The rocket stands 229 ft (70m) tall.



Image credit: SpaceX
Mission patch for the JCsat-14 mission


Image credit: SpaceX
LIFTOFF of Falcon 9 with its JCsat-14 payload!


Image credit: SpaceX
Trajectory of Falcon 9 and its payload en route to 36,000 km above Earth

While last month's barge landing happened during the day time and was filmed by nearby quad copters from the air, no such footage exists for last week's night landing. The only transmitting cameras were mounted on the barge itself. This led to temporary "white out" conditions as the brightness of the landing burn briefly overloaded the cameras. Those were nail-biting seconds. Did Falcon land? Did it break apart? Did it fall into the ocean? It wasn't until the brightness had receded that the barge's camera revealed Falcon 9's landing legs intact, and with that, another upright, beautiful landing of historic significance. 

Congratulations to Elon Musk and the entire team at SpaceX!



Image credit: SpaceX
View of landed Falcon 9 upper stage - still breathing fire - on the drone ship


Image credit: SpaceX
Recovered Falcon 9 on SpaceX's drone ship the next morning in all its - albeit a bit scorched - glory. (Let's see you travel 36,000 km out and then back into the atmosphere in a matter of minutes :)


Elon Musk, as per usual, inserted his own particular brand of wry humor into the twitter discussion once it had become clear that Falcon was safely on the barge, and would be tested for reuse, along with the booster recovered last month:



Here's a video of the launch and landing details only:




The entire hour-long webcast from SpaceX headquarters in Hawthorne, CA is worth a look as well, if only to experience the jubilant atmosphere that prevailed among SpaceX employees as their rocket performed flawlessly, including sticking a precarious landing on an ocean-borne barge, for the second time in a month.





Sunday, April 10, 2016

Dual Success For SpaceX


It's been a weekend of amazing successes for SpaceX. The private space company delivered its eighth Dragon resupply capsule to the International Space Station and stuck an experimental landing of the spent Falcon 9 booster rocket on a drone ship in the Atlantic. SpaceX has previously tried landing the first stage of a Falcon 9 used in missions. Both times, the rocket made it to its target on the drone ship, but failed to land upright, resulting in RUD events (rapid unscheduled disassembly).

This tweet from early Sunday morning, April 10, shows Dragon safely docked to the ISS Harmony module, next to an Orbital Sciences' Cygnus cargo craft and a Soyuz crew capsule on the lower right. In total, six spacecraft are currently docked to the International Space Station.





But let's go back to launch day, Friday, April 8, and take a look at all that SpaceX accomplished this weekend:


Image credit: SpaceX
Falcon 9 with its Dragon payload on the launch pad at Cape Canaveral


Image credit: SpaceX
Mission patch for SpaceX's eighth commercial resupply mission (CRS-8) to the International Space Station

If you look closely, you'll find the patch full of interesting details. For example, the eight stars in the design represent the eight missions to the ISS that SpaceX has flown so far, with one star dimmed out to symbolize last June's failed launch.



Image credit: SpaceX
Close-up of Dragon capsule atop Falcon 9, which stands over 200 feet (60 m) tall


Image credit: Space X
Graphic illustrating the stages of launch, landing and mission completion (click to enlarge)


The drone ship name in the above graphic is Just Read The Instructions. The ship on which Falcon 9 stuck its historic landing is Of Course I Still Love You.

The following trio of still pictures captured by SpaceX's chaser plane near the drone ship shows the landing's most breath-taking moments. This is the first time that SpaceX has successfully landed a rocket used in a mission on a drone ship at sea. The private space company previously succeeded at landing a Falcon 9 first stage on-shore.


Image credit: SpaceX

Image credit: SpaceX

Image credit: SpaceX

Whether Falcon 9's first stage lands on a drone ship or on shore after delivering a payload depends on several factors. Elon Musk explained some of them on Twitter.



Following are two tweets from SpaceX with landing video clips that were posted to the company's twitter account within hours of the landing.





Here is SpaceX's 36-minute launch and landing live webcast. About 30 seconds in, a legend appears at the bottom that lists the consecutive events being covered. It is well worth the time to review the launch and what SpaceX labeled "experimental landing". While the landing is one of the most jaw-dropping and certainly the most historic aspect of the CRS-8 mission, a successful landing was not the primary mission objective. That was getting a Dragon resupply capsule, including its important science cargo, safely to the International Space Station. SpaceX succeeded on both counts, with several cherries on top.

The reactions from employees at SpaceX headquarters in Hawthorne, CA after the successful launch and landing on Friday say it all. Elon Musk and the team at SpaceX have mastered another crucial step towards routine usage of reusable rockets, drastically lowering the cost of reaching targets in orbit and beyond and making space more accessible than ever before. SpaceX plans to re-fly a used rocket within a few months.



Video credit: SpaceX
Live webcast from SpaceX's headquarters during Friday's successful launch to the ISS and landing on one of the company's drone ship.


Below is the Storify of my live tweets and conversations during Friday's pre-launch, launch and landing events, with some additional remarks for this blog post.