ICESat-2, or a Ice, Cloud and land Elevation Satellite-2, is slated to launch in Sep to magnitude a tallness of Earth’s surface, quite a changing frigid ice. To do that, it uses a laser instrument called a Advanced Topographic Laser Altimeter System, or ATLAS, that precisely times how prolonged it takes light particles to rebound off Earth and lapse to a satellite.
ATLAS, that was designed, built and tested during NASA’s Goddard Space Flight Center in Greenbelt, Maryland, arrived in Gilbert, Arizona, during Orbital ATK’s trickery on Feb. 23, where it will be assimilated with a booster structure. To broach a instrument safely to a booster for public and testing, a ATLAS group grown special procedures for packing, transporting and monitoring a supportive hardware.
“There was a lot of caring and feeding that went with ATLAS along a road,” pronounced Kathy Strickler, ATLAS formation and exam lead.
The outing followed a successful array of tests, designed to safeguard a ATLAS instrument will duty in a oppressive sourroundings of space. After a instrument upheld those tests, including some in a thermal opening chamber, engineers legalised ATLAS to make certain it was purify and in a scold float configuration. Then, they trustworthy probes to a instrument that would check for vibrations as good as heat and humidity.
“These probes tracked what ATLAS indeed sensed when going over highway bumps, and what ATLAS felt as distant as heat and humidity,” pronounced Jeffrey Twum, a ATLAS float lead.
The group afterwards wrapped a instrument – about a distance of a Smart Car – in dual layers of anti-electrostatic liberate film, to forestall any shocks en route. With a protections in place, a derrick carried ATLAS into a transporter container. The group bolted it to a height upheld by a array of wire-rope coils used to alleviate a ride, and a cover of a transporter was fixed shut, sealing adult a cargo.
The lorry carrying ATLAS left a NASA Goddard campus outward Washington around 3 a.m. on President’s Day – timed to equivocate a misfortune trade on Washington’s bustling Beltway.
Planning a expostulate itself was a challenge, Twum noted. The procession – a director car, a float truck, a route automobile and other support cars – can’t expostulate by state capitals or large cities during rush hour. The procession can’t expostulate during night but special approvals. It requires permits for some stretches of roads, and is routed to equivocate certain construction zones.
The lead car, pushing a quarter-mile forward of a truck, looked out for accidents or waste in a road; anything that could impact a transporter. The trailing SUV helped switch lanes when necessary, and watched out for other drivers. The support automobile carried peculiarity declaration crew and technicians, who were gripping an eye on a sourroundings within a truck, monitoring any bumps or jostling, and determining a atmosphere upsurge by a trailer so no dirt particles settle on a ATLAS instrument. They stayed during hotels with large parking lots along a way, holding shifts to guard a instrument overnight.
The 2,000-mile outing took 4 and a half days.
The ATLAS instrument is now during Orbital ATK, where engineers will insert it to a booster and control additional testing. Then, a finish satellite will be repacked and trucked to a final stop before low-Earth orbit: Vandenberg Air Force Base in California.