After a relatively calm late summer, SpaceX kicked up the cadence again in October 2017 — closing out the month with three successful missions. This uptick in cadence follows a remarkable year that has left many astounded at the capabilities and durability of the company that was, until recently, considered an underdog in the aerospace industry.

On October 9, SpaceX launched the Iridium-3 mission from Vandenberg AFB in California. This launch carried the third set of 10 satellites into their target orbits. The Iridium NEXT constellation is a state of the art constellation of satellites that orbit in a low earth orbit around the planet and provide services including air and maritime tracking as well as Internet of Things and sat phone communications. It will consist of 72 individual satellites (6 of which are on-orbit spares) that are launched 10 at a time. Following the early October launch, the Falcon 9 booster returned to Earth and landed successfully on the “Just Read the Instructions” in the Pacific.

[EDIT: As per this January 2017 Press Release, Iridium has added 3 satellites to their constellation, bringing their on orbit spare count to 9 and total satellite count to 75.]

Iridium-3 Booster Stage on the “Just Read the Instructions” after landing (SpaceX)

Two days later, on October 11, SpaceX launched the EchoStar 105/SES-11 satellite to Geostationary Transfer Orbit (GTO) from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. This launch utilized a flight proven booster that had previously taken SpaceX’s 10th ISS resupply Dragon capsule to the International Space Station earlier in 2017. EchoStar 105/SES-11 is a dual-mission satellite that is operated by both US-based EchoStar and Luxembourg based SES. It provides TV and other communication capabilities to the North American continent. Following delivery of the second stage and payload into space, the booster once again returned to earth to land on the “Of Course I Still Love You” in the Atlantic ocean.

The Falcon 9 carrying the EchoStar 105/SES-11 satellite prior to launching (SpaceX)

Closing out October, SpaceX launched the Koreasat-5A satellite from Launch Complex 39A at NASA’s Kennedy Space Center in Florida on October 30. Koreasat-5A replaces the aging Koreasat-5 satellite and will provide TV, Broadband, and other communications services across Asia and parts of the Middle East. It will also provide maritime coverage of the Persian Gulf, Indian Ocean, South China Sea, and East China Sea — a feature unique to this satellite in the Koreasat fleet. Following the delivery of the second stage and payload into space, the booster landed on the “Of Course I Still Love You” in the Atlantic ocean after a high energy return through the Earth’s atmosphere. This marked the 16th successful mission this year — doubling the company’s previous annual launch record.

Falcon 9 lifting the Koreasat-5A satellite into orbit (SpaceX)

In fact, 2017 has been a banner year for SpaceX, and arguably for the future of spaceflight, in many ways. Here is a list of the notable milestones that have happened in 2017:

January 14 — Iridium-1 Satellite. Return to Flight after AMOS-6 test anomaly on September 1, 2016. After a 4 month stand-down to investigate the loss of the Falcon 9 during static fire test preparations, this flight from Vandenberg marked the start of the Iridium NEXT deployment and resulted in the first successful landing attempt on the automated support drone ship “Just Read the Instructions” in the Pacific ocean. This booster would go on to fly again in June.

February 19 — CRS-10 ISS resupply mission. This was the first private use of the LC-39A launch complex which had been used to send humans to the moon and launch the Space Shuttle. This booster would return to land at LZ-1 and fly once again in October.

March 30 — The SES-10 communication satellite became the first satellite launched to orbit on a flight proven booster. The booster was originally used to send the Dragon cargo capsule to the ISS for CRS-8 and was the first booster to land on a drone ship. Following delivery of the second stage and payload to orbit, this booster once again returned to earth to land successfully. This was also the first time that SpaceX launched two payloads in the same month with just 2 weeks between the previous launch of EchoStar and this one on the same pad.

May 1 — SpaceX launches their first National Reconnaissance Office payload (NROL_76). For the first time, the general public got to see footage of the booster separation and return to Landing Zone 1 from the ground. Due the secretive nature of the payload, viewers of the web cast were not able to watch the second stage burn or deployment.

NROL-76 Booster Separation as seen from the ground

June 3 — CRS-11 ISS Resupply mission. This mission marked the first reuse (partial) of an orbital class commercial spacecraft. The pressure vessel for this mission was previously flown on the CRS-4 mission in September 2014. The ability to reuse at least the pressure vessel portion of the Cargo Dragon spacecraft allowed for greater focus to be spent on the Crew Dragon program.

June 23 — BulgariaSat-1. This mission was the second reflight of a flight proven booster. The booster had previously been used in January to launch the Iridium-1 satellite. Following successful delivery of the second stage to orbit, this booster returned to earth to become the first to land on both droneships.

June 25 — Iridium-2. The second set of 10 satellites for the Iridium NEXT constellation was also the third launch for June and the second launch in the same weekend (from opposite sides of the country). This booster landed safely on the “Just Read the Instructions” despite very challenging weather and ocean conditions that necessitated re-positioning the JRTI just before launch.

July 6 — Intelsat satellite. Weighing in at 6 761 kg (14,900 lbs), this was the heaviest GTO mission ever flown by SpaceX. The Falcon 9 launched in expendable mode (no legs or grid fins) in order to deliver the payload to a very challenging altitude of at least 31 230 km (19,405 miles). The Falcon 9 exceeded that minimum and placed the payload into a better than expected orbit.

August 24 — Formosat 5 satellite. Shortly after breaking their record for heaviest launch, SpaceX launched the lightest payload the F9 has ever carried. The Formosat 5 was a legacy launch that was intended to be carried on a smaller Falcon variant.

September 7 — USAF OTV-5 Spacecraft. In their second classified mission of the year, SpaceX, for the first time ever, launched the Boeing built X-37 spacecraft for the US Air Force’s OTV-5 mission. This mission also debuted a new fairing/payload support attachment on the transporter erector launcher (TEL), presumably to protect the rather heavy and delicate X-37 spacecraft. As with the previous NROL mission, footage of the 2nd stage operations and payload delivery was not made available to the public.

OTV-5 mission rolling out to the launch pad featuring new payload support brace (Ken Kramer)

October 9 & 11 — Iridium-3 and EchoStar 105/SES-11 Satellite. These launches marked the second double header (of a sort) of 2017 with Iridium-3 launching from Vandenberg, CA and EchoStar 105/SES-11 launching from Launch Complex 39A at NASA’s Kennedy Space Center in Florida just 2 days later. In addition, as mentioned earlier, the SES-11 booster had already flown earlier in this year for CRS-10.

October 30 — KoreaSat-5a Satellite. This launch marked the 16th successful launch for 2017, doubling the previous annual record for launches by SpaceX. It was also the 13th landing of the Falcon 9 first stage this year (3 flights this year were in expendable mode).

One could be excused for thinking that after such an eventful year and with the holidays rapidly approaching, SpaceX might be ready to stand down for a a couple of months until the new year. However, they are still going strong through the end of 2017.

Next up on their launch manifest is the rather mysterious Zuma launch. While it could be presumed that SpaceX was well aware of this launch for many months, the general public only recently became aware of this launch when the FCC launch license became available. Even then, the client was not known for a while.

Ultimately, it was revealed that the provider of the payload was Northrop Grumman and that this was a government payload. The launch is scheduled for November 15 at 8 pm EST from LC-39A. Given the clandestine nature of the payload, it would be reasonable to expect that, again, the second stage cameras will not be made public.

Falcon Heavy hold downs visible on the TEL with F9 booster (nasaspaceflight.com)

Zuma will be the last launch this year from LC-39A which will shutdown immediately afterwards for some final modifications to support the new Falcon Heavy rocket. Originally, it was expected that once SLC-40 came back online, the LC-39A complex would have to be offline for about 60 days to complete modifications. SpaceX has, however, been doing everything they can in between launches to eliminate this down time. Recent photos have indicated that most of the hold downs for the FH are in place. Final modifications involve welding work on the TEL and additional plumbing and wiring.

In December, SpaceX will return to SLC-40 for the launch of the CRS-13 ISS resupply mission. Once this pad is operational, it is expected that most single core missions will launch from there, with the exception of crew missions. If scheduling conflicts happen, though, the LC-39A TEL will be capable of supporting any single core launch.

JCSAT-16 launching from SLC-40 in August 2016. This was the last launch from the pad before the testing anomaly ( Michael Seeley for We Report Space)

At some point in late November, SpaceX hopes to raise the FH at the LC-39A launch pad for initial fitting tests. Following fit tests, SpaceX will perform a wet dress rehearsal of the maiden launch of the vehicle. This rehearsal will involve activating all of the launch systems and fueling the vehicle, with the option of continuing into a static fire test — a test where the engines are started and brought to full thrust and then shut down without releasing the rocket.

These tests are vital for the success of the launch because much of the FH is new ground. The Falcon Heavy is in many ways three Falcon 9 rockets strapped together (although, there are many structural enhancements to the center core). The fueling, communications, and operation of the rocket systems as a single unit, though, has never been performed before. In fact, no US based company has ever started 27 rocket engines at the same time. Currently, the LC-39A launch pad is the only place where the FH can be assembled and tested, which necessitated that SLC-40 be back online before they proceeded with the FH launch.

With the understanding of the complexity of the FH systems, SpaceX has budgeted enough time to perform at least two wet dress rehearsals to allow for any necessary corrections. The goal is to launch the Falcon Heavy this year with the current earliest date (NET) for launch being December 29. There is a possibility that it could “pull left” to an earlier date is everything goes better than expected, but many predict it will slip into early January.

Artists conceptual image of Falcon Heavy launch (SpaceX)

Regardless of the launch date, there is a lot of anticipation for a great maiden voyage. With 3–4 additional missions on their manifest for the Falcon Heavy, a lot is riding on the success what will be the most powerful operational rocket on the planet. What a better way to herald a new year full of crewed flights, multiple Falcon Heavy launches, and an anticipated 30 overall launches than to watch 2 (boosters) land by land and one (booster) land by sea.