How Goodyear Developed Tires For The Moon

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NASA's Artemis II ngo sent 4 astronauts astir our moon, marking nan first clip humans person been anyplace adjacent our nearest celestial buddy since 1972. The bravery of those 4 astronauts and nan celebration of specified an achievement tin punctual america each of erstwhile trips to nan satellite and nan engineering brilliance that sewage humankind there. Those creation triumphs are many, but immoderate of them came from sources you whitethorn not cognize of, for illustration Goodyear, which developed nan first rubber tires to touch down connected nan moon. However, nan first rubber tyre location wasn't utilized for any of nan awesome lunar rovers. It was really built for a manus cart. 

During nan Apollo 14 ngo successful 1971, a group of Goodyear non-pneumatic XLTs fto Cmdr. Alan Shepard and Lunar Module Pilot Edgar Mitchell haul instrumentality and lunar rocks astir connected their two-wheeled cart, called the Modular Equipment Transporter (MET). It might sound silly to opportunity that a two-wheeled cart is responsible for overmuch of what we cognize astir abstraction and nan moon's geology, but nan instrumentality hauled backmost and distant from nan lunar lander provided NASA pinch massively important data. And since nan MET's brace of Goodyears were nan first gas-filled rubber tires utilized successful space, they had a large occupation to do.

Tires for satellite traversal were still a caller thought successful 1971. When nan lunar rover landed and drove connected nan moon, its tires were made of woven metal, not rubber. The moon's aboveground isn't precisely a Swiss highway, truthful crisp rocks and vulnerable craters are existent concerns. There isn't AAA to travel thief you hole a level erstwhile you're astir 239,000 miles from home. So Goodyear had to create a rubber tyre that could grip nan weight of MET's payload while being hauled by manus complete a rocky aboveground without popping. One puncture and nan tyre is done for, without a spare successful sight.

What Goodyear came up pinch was a soft rubber tyre filled pinch nitrogen. While Goodyear doesn't opportunity if location was a circumstantial moon-based logic for utilizing nitrogen, it does opportunity that present connected Earth, nitrogen is utilized owed to its little permeation unit loss. The soft deficiency of tread of nan MET's tyre is overseas to see, making it for illustration a lunar racing slick. However, without immoderate rainfall connected nan moon, location isn't a request for tread.

The MET needed to transportation up to 360 pounds and was pulled by hand. So it needed to rotation smoothly complete agelong distances, sometimes while hauling priceless equipment, without suffering a puncture. During Shepard's and Mitchell's 2nd satellite walk, they pulled nan MET almost 2 miles information trip. The moon's rocky terrain often proved excessively difficult for moreover nan MET and Goodyear's tires, however, so sometimes nan 2 astronauts decided to conscionable prime nan MET up and transportation nan damn thing. Of course, nan moon's gravity is only astir 16.6% of Earth's, truthful its weight was easier to grip up location than it would person been down here.

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In nan 2000s, Goodyear teamed up pinch NASA yet again, to create a caller tyre for a caller procreation of lunar rover. Its old-school creation was difficult capable to usage connected a cart, truthful it was ne'er going to activity connected a lunar rover that weighed importantly more. What Goodyear and NASA came up pinch was nan Spring Tire, an airless tyre made from 800 helical springs woven together. Not only was nan Spring Tire tin of traversing punishing terrain while base dense weight without permanently deforming, its inherent redundancy made it much reliable. 

"A difficult effect that mightiness origin a pneumatic tyre to puncture and deflate would only harm 1 of nan 800 load base springs," Vivake Asnani, main interrogator for nan task astatine NASA's Glenn Research Center successful Cleveland, said successful a 2010 Goodyear news release. "Along pinch having this ultra-redundant characteristic, nan tyre has a operation of wide stiffness yet elasticity that allows off-road vehicles to recreation accelerated complete unsmooth terrain pinch comparatively small mobility being transferred to nan vehicle."

Goodyear continues to activity pinch NASA successful processing caller chemic compounds for tires connected each celestial bodies. In 2019, nan institution sent instrumentality up pinch astronauts to nan International Space Station to study silica, which it hoped would thief create caller tyre compounds. As NASA intends for 2 satellite missions a year, it's worthy looking backmost astatine this longstanding narration that has helped humankind research nan universe.