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rockets

04.17.19 telecommunications

SpaceX Lands All 3 Boosters of the World’s Most Powerful Rocket

The Falcon Heavy rocket is many things, but “timely” is not one of them. Delay after delay have plagued its development. And this week, the same fate befell its launch schedule. Originally slated to lift off last Sunday, the Falcon Heavy’s first commercial launch was thrice delayed due to unfavorable weather conditions before it finally left launchpad 39-A at Kennedy Space Center today.

But it was worth the wait. The minute the launch window opened on Thursday, the rocket boosted its payload, a Saudi Arabian telecommunications satellite, toward geostationary orbit. Even from across several miles of water, the power of 5 million pounds of thrust was enough to rattle your ribcage. One nearly had to shout to be heard over the roar of the 27 Merlin engines as the rocket departed the launchpad, but few felt the need to say anything. Instead, most of the reporters I was with on the causeway cast their eyes to the sky, tracking the rocket between breaks in the low-hanging clouds as it boosted a 13,000-pound satellite thousands of miles above the Earth.

Less than eight minutes after launch, the rocket’s two side boosters appeared overhead, looking like two building-sized candlesticks in the twilight sky. As the rockets executed their final burn to perform a nearly simultaneous landing, two sonic booms ripped through the otherwise peaceful Florida night. Everyone on the causeway erupted in cheers after it was clear that both boosters had successfully landed, the tops of which could just be seen over the trees. Only a few minutes later, the center core attempted a landing on Of Course I Still Love You, a drone ship parked in the Atlantic Ocean 600 miles from the launchpad.

https://twitter.com/elonmusk/status/1116473976828522496

A handful of spectators were listening to a radio broadcast from the launch command center, waiting to hear the fate of the center core. The two minutes between the side boosters landing and the center core’s attempt were tense. During the Falcon Heavy’s demo flight last year, the center core landed in the water, and the resulting explosion damaged the drone ship. The botched landing was due to insufficient fuel to light some of the engines, CEO Elon Musk later revealed, but he said “the fix is pretty obvious.”

Whatever obvious fix Musk and the SpaceX crew employed this time around clearly worked. The center core nailed its landing on the drone ship, and once word made its way from SpaceX command center, the journalists and photographers assembled on the NASA causeway went absolutely wild. Only a few years ago, the idea of landing a rocket booster was unthinkable. Now, SpaceX had just aced a landing by three boosters from the same rocket.

Daniel Oberhaus

The company’s success was not guaranteed. Musk had warned his followers that SpaceX was being “extra cautious” ahead of the Falcon Heavy’s first commercial flight to give engineers the time to make sure it would go off without a hitch. The caution is understandable. Although the Falcon Heavy had flown a demo mission once before, this rocket used new Block 5 boosters, which are 7 percent more powerful than the ones used for the demo flight. “First flight for Falcon Heavy Block 5 means there is some risk of failure between 5% to 10% imo,” Musk had tweeted. “Many good design improvements from Falcon Heavy demo, but the changes are unproven.”

The success of the Falcon Heavy’s first commercial flight is good news for the Air Force. The next flight of the Falcon Heavy will be an Air Force rideshare mission that is expected to occur no earlier than mid-June. That launch will use the two side boosters that landed at Kennedy today to boost 25 satellites built by organizations including Georgia Tech, the Planetary Society, and NASA.

Musk has long said that he will consider SpaceX successful when landing rockets becomes boring. But after watching the world’s most powerful operational rocket go to orbit and then return each of its three first-stage boosters to Earth, I can’t help but think that SpaceX will never be successful—at least not by Musk’s metrics. The nearly simultaneous landing of the two side boosters is the most futuristic thing I have ever seen. In fact, one of the only things I can imagine that is more extraordinary than this feat of engineering would be treating it as mundane.


Read more: https://www.wired.com/story/spacex-lands-all-3-boosters-of-the-worlds-most-powerful-rocket/

04.16.19 telecommunications

Watch SpaceX Launch a Falcon Heavy on Its First Real Mission

Editor's note: Read our recap of the launch here.

A little over a year ago, SpaceX pulled off a showy first launch for its new rocket, the Falcon Heavy. The flight dispatched founder Elon Musk’s cherry-red Tesla convertible, with an empty spacesuit dubbed Starman in the driver’s seat, on a multimillion-year journey around the solar system. After the launch, the rocket’s three first-stage boosters returned to Earth to attempt an unprecedented synchronized landing.

Now that rocket is getting ready to fly again. The Falcon Heavy represents SpaceX’s ambition of competing for lucrative heavy-launch commercial and government contracts, which would require transporting payloads weighing more than 40,000 pounds into geosynchronous orbit. If this second flight is successful, the Falcon Heavy will be much closer to satisfying the military’s strict requirements and landing those deals.

The first commercial flight of the Falcon Heavy, from Kennedy Space Center in Florida, is expected to launch at 6:35 pm ET today (Thursday). Originally scheduled to fly on Sunday, the launch was delayed twice due to unfavorable weather conditions. This mission will carry a Saudi Arabian telecommunications satellite, dubbed Arabsat 6A, into a geosynchronous orbit, where it will provide television, internet, and telephone services for countries in the Middle East, Africa, and Europe. A few minutes after launch, SpaceX will attempt to land each of the rocket’s three first stage boosters—two on landing pads near the launch site and one on a floating drone ship 600 miles off the coast. Last year, SpaceX successfully brought two boosters back to land, but fuel issues prevented the center core from sticking its landing.

As the most powerful operational rocket in existence by a factor of two, the Falcon Heavy is nothing short of a technological marvel. With the thrust equivalent of about 18 747 airliners, it can hoist around 140,000 pounds into low Earth orbit and 58,000 pounds into geosynchronous orbit, more than enough to handle the 13,000 pound Arabsat. The Falcon Heavy’s main selling point, however, is that it is the only heavy launch vehicle in the world that has reusability baked into its design.

Each of the Falcon Heavy’s three first-stage boosters are borrowed directly from SpaceX’s flagship Falcon 9 rocket, so named for the nine Merlin engines that provide its thrust. Unlike the Falcon Heavy’s first flight, which used an older model of booster, today’s vehicle will consist of three new block 5 engine cores. SpaceX first launched the block 5 Falcon 9 rocket last May, and has flown these boosters 13 times since. The block 5 is designed to fly at least 10 times with minimal refurbishment between launches, and it offers a 7 percent increase in thrust over its predecessors.

If the Falcon Heavy can prove its mettle, it could cut the cost of heavy launches dramatically. Since 2004, the US heavy launch market has been dominated by the United Launch Alliance’s Delta IV heavy rocket, which has half the lift capability at approximately four times the cost. A single ride on the Delta IV heavy has been quoted at around $350 million, whereas a Falcon Heavy launch starts at $90 million for a brand-new rocket, a price point that may go as low as $70 million for launches using previously flown boosters.

For companies looking to launch a large satellite, the savings are significant. But SpaceX will likely find its biggest customer in the US government. The existence of the Falcon Heavy could be good news for future deep-space exploration missions, which often require heavy-launch capability to throw the spacecraft to Mars and beyond. These missions already have to fight to justify their cost, and between 10 and 20 percent of a mission price tag is generally reserved for the launch itself. If NASA can shave tens of millions of dollars off the cost of sending its spacecraft to other planets, these savings could, in principle, be used to develop exploration missions that would have otherwise been defunded.

To handle military payloads, SpaceX still faces a number of hurdles before the rocket is cleared for use. The Air Force reserved a flight on the Falcon Heavy in 2012, with an initial launch date scheduled for no earlier than 2015. That has yet to happen, but it didn’t stop the military from awarding SpaceX a $130 million contract to launch a classified satellite on a Falcon Heavy only months after its demo flight. Earlier this year, SpaceX won a second Air Force contract for another classified satellite that is expected to fly on the Falcon Heavy. In February, however, the Department of Defense launched an investigation into the military certification of SpaceX rockets for reasons that remain unclear.

These government deals are becoming increasingly important to SpaceX, especially with the commercial market for large satellites appearing to slow. Indeed, a perusal of the launch manifest for the Delta IV heavy shows that the majority of its flights over the past 15 years have hosted military payloads, and the ability to snag some of these lucrative contracts in the future would represent a major windfall for SpaceX.

The Air Force will undoubtedly be paying close attention to the Arabsat launch today, which will help prove that the rocket can safely deliver its sensitive payloads to orbit. Moreover, the two side boosters flying today are expected to be reused in the first Air Force mission this summer, assuming they land successfully back at Kennedy Space Center after their flight.

Meanwhile, the US military is helping to clear the way for a new generation of heavy-launch vehicles that will eventually compete against SpaceX. In March, the US government overhauled its Evolved Expendable Launch Vehicle program, which was created nearly two decades before SpaceX demonstrated a reusable rocket for the first time. Under these old guidelines, reusable heavy-launch vehicles under development, like the Blue Origin New Glenn rocket, would’ve had a hard time qualifying for sensitive military missions since the rockets aren’t expendable. The new National Security Space Launch program will provide a clear pathway for certifying rockets using previously flown parts for military missions, a change largely driven by the success of the Falcon 9 and Falcon Heavy rockets.

Although it will eventually mean more competition, the military’s willingness to embrace the new generation of rockets is paying off for SpaceX. It already has two Air Force missions on the books for Heavy, the first of which is expected to fly as early as mid-June. Whether or not SpaceX can hit this target date depends on their ability to meet the rigorous certification standards for military contracts—and by sticking the landing of the Falcon Heavy boosters today.

Updated 4-11-2019, 1pm ET: The estimated launch time was revised.


Read more: https://www.wired.com/story/watch-spacex-launch-a-falcon-heavy-on-its-first-real-mission/

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