SpaceX to Try Bold Rocket Landing Again Sunday: Watch Live

October 6, 2017 – 07:36 am
Falcon 9 Rocket Trying to Land, April 14, 2015Graphic showing the plan for SpaceX's reusable-rocket test, which is currently scheduled to occur during the launch of the company's Dragon cargo capsule toward the International Space Station on June 28 2015.

SpaceX has attempted this move twice before, during Dragon cargo launches in January and April. Both of these previous tries were tantalizing near misses: The rocket stage succeeded in hitting the boat but ended up crashing and exploding.

The January try failed because the rocket stage ran out of hydraulic fluid for its stabilizing "grid fins, " while April's "hard landing" resulted from a valve problem, SpaceX representatives have said. Engineers addressed both issues, representatives added, but success on Sunday is still far from assured.

Incidentally, whereas the previous two attempts involved a drone ship called "Just Read the Instructions" Sunday's will employ a new one called "Of Course I Still Love You."

The goal of these tests is to help develop fully and rapidly reusable rockets, which SpaceX founder and CEO Elon Musk has said could slash the cost of spaceflight dramatically.

"Each new plane costs about the same as one of our Falcon 9 rockets, but takes off and lands many times per day and is likely to conduct tens of thousands of flights over its lifetime, " the representatives added. "Yet when it comes to space travel, rockets fly only once — even though the rocket itself represents the majority of launch cost."

But for all the fanfare and drama, the rocket-landing test is a secondary objective on Sunday. The main goal is to send Dragon safely on its way to the space station. The capsule is loaded up with more than 4, 000 lbs. (1, 814 kilograms) of food, supplies and scientific gear, including a meteor-observing experiment.

SpaceX holds a $1.6 billion NASA contract to fly at least 12 unmanned cargo missions to the space station. Sunday's launch will kick off the seventh such flight.

If Dragon gets off the ground as planned on Sunday — and the weather looks like it should cooperate, with a 90 percent chance of good conditions as of Thursday evening — the capsule will arrive at the station on Tuesday morning (June 30), NASA officials said.


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