11 kilometers per second: This is the speed of the Orion capsule as it reenters Earth’s atmosphere. Here is the video
Watch this video of the Orion capsule diving into the Earth’s atmosphere at a speed of 11 km/s, it’s truly amazing! On December 11 last year, the Artemis 1 program’s Orion capsule returned to Earth after completing a 25-and-a-half-day mission, which also included an orbit around the planet. Luna.
NASA’s Orion spacecraft uses a reentry technique called “skip entry” for its return to Earth after its mission to the Moon. During this type of reentry, Orion enters the Earth’s upper atmosphere and uses the atmosphere, With the capsule raised, to make jumps above the atmosphere itselfas when we bounce a flat stone off the surface of a small lake, and then it comes back down with a final parachute and falls into the Pacific Ocean.
This technology allows Orion to have greater accuracy than the direct reentry technology used during the Apollo missions. In addition, skipping entry and re-entry allows astronauts to experience lower accelerations when entering Earth’s atmosphere than on lunar missions. Returning from the moon is anything but simple. The capsule reaches the ground at a very high speed, and this friction generates very high temperatures that can reach 2800 degrees Celsius. To prevent the capsule from disintegrating and to ensure that the astronauts remain on board at a comfortable temperature, it is necessary to have adequate insulation and above all an effective heat shield.
Orion heat shield
In the case of Orion, an ablative shield patented by NASA for the Apollo missions, AVCOAT 5026-39, was used. This shield is made of epoxy resin with additional additives, all arranged in a honeycomb-shaped fiberglass matrix. The design and production of this heat shield was entrusted to Lockheed Martin. Below is the amazing video:
to know more, “Space Sensors: Electronic Eyes Exploring the Universe“: https://amzn.to/3SKriwz
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