Elon Musk to reuse a rocket within a day in 2019

The Falcon 9 Block 5 rocket is hauled up pad 39A at the Kennedy Space Center for an engine test firing

As SpaceX seeks to fly astronauts onboard by the end of 2018, NASA will require 7 successful flights of an unchanged version of the Falcon 9 before certifying the company and rocket for manned spaceflight.

Previous iterations of the two-stage Falcon 9 have been reusable, of course; before Friday's mission, SpaceX had successfully landed 24 Falcon 9 first stages and reflown such landed boosters 11 times.

The Block 5's first stage now have an 8 percent thrust increase at sea level producing a total 1,710,000 pounds force, with each of the nine Merlin 1D engines producing 190,000 pounds force. What that means is dramatically lower cost that will make space travel cheaper and more accessible in the very near future. The Falcon 9 rockets that SpaceX has been flying for the a year ago are all reusable, but they require an extensive teardown between flights to perform maintenance. The only vacuum-optimized Merlin engine Falcon 9's second point includes a 5% push growth to 220,000 pounds-force, " he explained. The Merlin engines on that very first variation had 95,000 pounds of thrust for each first-stage engine and 92,500 pounds of thrust for the second-stage engine.

" In concept, we might refly Block 4 most likely upwards of 10 times, however with a reasonable quantity of work in between each flight", Musk stated.

In comparison, the Block 5 Falcon 9 is twice as powerful as the Falcon 9 that first launched a demonstration resupply mission for NASA in 2010.

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"Standing down today due to a standard ground system auto abort at T-1 min. Rocket and payload are in good health-teams are working towards tomorrow's backup launch opportunity at 4:14 p.m. EDT, or 20:14 UTC".

Ironically, the first zero-maintenance rocket is going to have to be torn apart to prove that it can fly again without intervention.

Falcon 9's octaweb structure that supports the all nine first stage engines is now a bolted structure instead of welded, easing manufacturing and inspections.

SpaceX also updated the rocket's avionics, and so is maintaining the titanium grid, he explained. The Falcon 9 formerly utilized aluminum fins for guiding the Falcon 9 first stage back to Earth, however SpaceX altered those on the Block 3 to titanium after the aluminum fins ignited throughout reentry. Although Musk and other SpaceX officials have known as the Block 5 the last layout, Musk suggested that some small improvements could nevertheless be made into the rocket.

"We mean to stabilize the Block 5 stage and don't have any significant upgrades".

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