SpaceX conducted test-firing with their Falcon heavy rocket in Florida
They fired 27 engines of the Falcon rocket in hold-down test firing
The test firing sent rumbles across the spaceport before the US Space force launch next week
The 27 Merlin engines were ignited at 8 PM EDT and ran for approximately 10 seconds
The launch team of SpaceX loaded the rocket with 3 million pounds of kerosine and oxygen propellants
The static test fire generated window-rattling roar which can be heard from miles
It almost throttled up to its full power generating 5.1 million pounds of thrust
The test was conducted without the payloads or payloads fairing on the heavy rocket
At a separate satellite process facility those elements were prepared at the Spaceport
The Falcon Heavy is highly powerful operational rocket and launch will be fourth for the heavy lifter