The "Crawler Conveyor" is the largest land vehicle in the world with NASA

Over the next two years, NASA plans to launch the first missile of the SLS missile family, Launching Space ", for carry out his first mission.

The missile will cut 384 400 kilometers into an unmanned lunar orbit, according to the BBC.

It will transport the multibillion-dollar transport of its badembly building The 98-meter long Kennedy Space Center launch site is one of the largest land vehicles over 50 years old and whose leadership requires special attention.

The "Two Crawler Sails" were manufactured in 1965 to carry the Saturn 5 rocket that carried the astronauts over the Moon and modified them in the 1970s to adapt to the size of the American space shuttle. Drivers in both cars cabins in front and back.

One of 2700-ton vehicles of 40 meters in height and 35 meters in height has undergone upgrades and upgrades, replacing the old parts with more robust ones, to withstand the SLS, but its basic design has not changed. Realize his mission.

The test vehicle will move the concrete beams weighing the weight of the new rocket to make sure the calculations are accurate.
Bob Meyers, one of the most experienced drivers of the two shuttles, said: "We sometimes boast that these two satellites were manufactured by engineers with their hands, according to precise calculations and measurements, and that They do not use the computer. "

He added: "The two tanks have been carefully designed and perfect, and as a result they are more robust than many other vehicles today.

Myers was badigned the task of driving the caterpillar to move the space shuttle to the launch site in 1982, describing the experience as "annoying".

He continued, "You are terrified at first, because the error has terrible consequences, and the leader takes a long time to get used to this psychological and psychological pressure."

Each carrier has 8 tracks, each corner of the four corners, 57 circuits, while diesel engines are powered by generators that power 13 electric motors.

The upper part of the track contains sensors and supports to mount the mobile platform that will carry the rocket in place during the flight to the launch site and will transmit curves requiring superior control of the vehicle to maintain the 39, balance of the caterpillars.
"We have a team of subcontractors leading the way before each mission," said John Giles, Project Manager: "When the track winds its way, the rocks are crushed and the shrapnel is flying in." all directions.

The diameter of the vehicle's steering wheel is only 15 centimeters, and the speedometer and the brake pedal are not different in the badpit than in normal cars.
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All orders are sent from simple controllers to a newly developed computer to ensure the proper functioning of hydraulic pumps that operate mechanical components manufactured since the 1960s.

It takes a maximum of seven hours to transport the big rocket from the badembly building to the launch site, and the drivers spin the drive every two hours, but the track continues to walk while driving.

Myers, who had been driving both transports for more than 35 years, commented: "Driving this vehicle is harder than it looks, the road has a lot of curves, some areas require some speed excessive, but if you have enough experience and follow the directions,.

Myers explained that the vehicle does not stop at all until the rocket stabilizes in place, pointing out that the success of this task does not depend on the speed of the carrier, but depends on the ability to walk as fast as possible.

He stressed that the role of the caterpillar does not stop at the mobile platform carrying only the rocket, but will place it safely and fixed the launch site very precisely.

It should be noted that over the past 50 years, both satellites have been cut off for approximately 3,000 kilometers, and NASA expects both satellites to remain in service for at least three decades.