Aerospace Picture of the Day

New and old developments in aviation technology.
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jetblast16

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Unread post20 Nov 2022, 02:34

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NASA Orion space capsule outbound to Moon
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Unread post21 Nov 2022, 21:40

Orion Successfully Completes Lunar Flyby, Re-acquires Signal with Earth

Orion re-acquired signal with NASA’s Deep Space Network, at 7:59 a.m. EST after successfully performing the outbound powered flyby burn at 7:44 a.m. EST with a firing of the orbital maneuvering system engine for 2 minutes and 30 seconds to accelerate the spacecraft at a rate of more than 580 mph. At the time of the burn, Orion was 328 miles above the Moon, travelling at 5,023 mph. Shortly after the burn, Orion passed 81 miles above the Moon, travelling at 5,102 mph. At the time of the lunar flyby, Orion was more than 230,000 miles from Earth.

The outbound powered flyby burn is the first of two maneuvers required to enter the distant retrograde orbit around the Moon. The spacecraft will perform the distant retrograde orbit insertion burn Friday, Nov. 25, using the European Service Module. Orion will remain in this orbit for about a week to test spacecraft systems. The distant retrograde will take Orion 40,000 miles past the Moon before it returns to Earth. Orion’s greatest distance from the Earth will be Monday, Nov. 28 at 3:05 p.m. CST at more than 268,500 miles. Orion’s greatest distance from the Moon will be on Friday, Nov. 25 at 3:53 p.m. CST at more than 57,250 miles.

The Deep Space Network, managed by NASA’s Jet Propulsion Laboratory in Southern California, handles communications for Artemis I beyond low-Earth orbit. This includes the mission’s trajectory corrections, powered flyby burns, and insertion into and departure from distant retrograde orbit, while the Near Space Network provides supplemental navigation data with assistance from the Near Space Network’s tracking and data relay satellite constellation.

The Deep Space Network consists of three facilities spaced equidistant from each other – approximately 120 degrees apart in longitude – around the world. These sites are at Goldstone, near Barstow, California; near Madrid, Spain; and near Canberra, Australia. The strategic placement of these sites permits constant communication with spacecraft as our planet rotates – before a distant spacecraft sinks below the horizon at one site, another site can pick up the signal and carry on communicating. Orion initially regained signal with the Madrid ground station after the lunar flyby and then transitioned signal to the Goldstone station.

NASA will host a news conference on NASA T V at 5 p.m. EST to discuss Orion’s outbound powered flyby burn and provide an update on post-launch assessments of the Space Launch System rocket and Exploration Ground Systems.

Participants will include:

Mike Sarafin, Artemis I mission manager
Judd Frieling, NASA flight director
Howard Hu, Orion Program manager
NASA TV coverage of the distant retrograde orbit insertion burn will begin at 4:30 p.m. EST Friday, with the burn scheduled to occur at 4:52 p.m.

Learn more about distant retrograde orbit and NASA’s communication and navigation networks. See which antennas are communicating with Orion in real-time on Deep Space Network Now and track Orion via the Artemis Real-Time Orbit Website, or AROW. 

Source: https://blogs.nasa.gov/artemis/2022/11/ ... ith-earth/
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Unread post27 Nov 2022, 19:41

Artemis I – Flight Day 11: Orion Surpasses Apollo 13 Record Distance from Earth

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On flight day 11, NASA’S Orion spacecraft captured imagery looking back at the Earth from a camera mounted on one of its solar arrays. The spacecraft is currently in a distant retrograde orbit around the Moon.

On day 11 of the Artemis I mission, Orion continues its journey beyond the Moon after entering a distant retrograde orbit Friday, Nov. 25, at 3:52 p.m. CST. Orion will remain in this orbit for six days before exiting lunar orbit to put the spacecraft on a trajectory back to Earth and f a Sunday, Dec. 11, splashdown in the Pacific Ocean.

Orion surpassed the distance record for a mission with a spacecraft designed to carry humans to deep space and back to Earth, at 7:42 a.m. Saturday, Nov. 26. The record was set during the Apollo 13 mission at 248,655 miles from our home planet. At its maximum distance from the Moon, Orion will be more than 270,000 miles from Earth Monday, Nov. 28.

Engineers also completed the first orbital maintenance burn by firing auxiliary thrusters on Orion’s service module at 3:52 p.m. for less than a second to propel the spacecraft at .47 feet per second. The planned orbital maintenance burns will fine-tune Orion’s trajectory as it continues its orbit around the Moon.

Flying aboard Orion on the Artemis I mission is a suited manikin named after a key player in bringing Apollo 13 safely back to Earth. Arturo Campos was an electrical engineer who developed a plan to provide the command module with enough electrical power to navigate home safely after an oxygen tank aboard the service module of the Apollo spacecraft ruptured. Commander Moonikin Campos is outfitted with sensors to provide data on what crew members may experience in flight, continuing Campos’ legacy of enabling human exploration in deep space.

Artemis builds on the experience of Apollo. With Artemis, humans will return to the lunar surface, and this time to stay. NASA will use innovate technologies to explore the Moon’s South Pole and more of the lunar surface than ever before using the Gateway space station in lunar orbit along with advanced spacesuits and rovers. NASA will lead the way in collaboration with international and commercial partners to establish the first long-term presence on the Moon. Then, we will use what we learn on and around the Moon to take the next giant leap: sending the first astronauts to Mars.



As of 1:16 p.m., Orion was 252,133 miles from Earth and 52,707 miles from the Moon, cruising at 2,013 miles per hour. You can track Orion via the Artemis Real-Time Orbit Website, or AROW.

Learn more about how Apollo builds on Artemis and how Orion is designed for human missions to deep space.

Source: https://blogs.nasa.gov/artemis/2022/11/ ... rom-earth/
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Unread post28 Nov 2022, 00:24

Artemis I – Flight Day 12: Orion Star Trackers Tested

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art001e000479 (Nov. 24, 2022) – On flight day 9, NASA’s Orion spacecraft captured imagery looking back at the Moon from a camera mounted on one of its solar arrays. The spacecraft is enroute to a distant retrograde orbit around the Moon.

On the 12th day of the Artemis I mission, team members conducted another planned test of the star trackers aboard Orion as it continued along a distant retrograde orbit of the Moon, and began another reaction control thruster flight test.

Engineers hope to characterize the alignment between the star trackers and the Orion inertial measurements units, both of which are part of the guidance, navigation and control system, by exposing different areas of the spacecraft to the Sun and activating the star trackers in different thermal states. Star trackers are navigation tools that measure the positions of stars to help the spacecraft determine its orientation. The inertial measurement units contain three devices, called gyros, used to measure spacecraft body rotation rates, and three accelerometers used to measure spacecraft accelerations.

Together, the star tracker and inertial measurement unit data are used by Orion’s vehicle management computers to compute spacecraft position, velocity, and attitude. The measurements will help engineers understand how thermal states affect the accuracy of the navigation state, which ultimately affects the amount of propellant needed for spacecraft maneuvers. Read more about Orion’s guidance, navigation, and control system in the Artemis I reference guide.

Engineers began a development flight test objective today that changed the minimum jet firing time for the reaction control thrusters over a period of 24 hours. This test objective is designed to exercise the reaction control system jets in a different configuration to model how thruster jets will be used for the crewed Artemis II mission.

Teams also activated and interacted with the Callisto payload, a technology demonstration from Lockheed Martin in collaboration with Amazon and Cisco. Callisto is located in the Orion cabin and will test voice activated and video technology in the deep space environment.

Monday, Nov. 28, Orion will reach its farthest distance from Earth when it is nearly 270,000 miles from our home planet.

As of 4:30 p.m., Orion was over 264,000 miles from Earth and 45,600 miles from the Moon, cruising at 1,750 miles per hour. You can track Orion via the Artemis Real-Time Orbit Website, or AROW.

To follow the mission real-time, you can track Orion https://www.nasa.gov/specials/trackartemis/ during its mission around the Moon and back, and check the NASA TV schedulehttps://www.nasa.gov/nasalive/ for updates on the next televised events. The latest imagery and videos can be found on the Johnson Space Center Flickr https://www.flickr.com/photos/nasa2expl ... 0303788800.

Source: https://blogs.nasa.gov/artemis/2022/11/ ... rs-tested/
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Unread post03 Dec 2022, 03:27

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art001e001820 (Dec. 1, 2022): On flight day 16, a camera mounted on one of Orion’s solar arrays snapped this image of our Moon as the spacecraft prepared to exit distant retrograde orbit during the Artemis I mission.
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Unread post06 Dec 2022, 09:39

The Orion spacecraft captured this stunning view of a crescent Earth and the limb of the moon after completing the return powered flyby maneuver for the Artemis 1 mission Monday.
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Artemis 1 return flyby
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Unread post11 Dec 2022, 23:51

Splashdown! Orion has returned.
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Artemis 1
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Unread post13 Dec 2022, 03:22

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Unread post13 Dec 2022, 03:26

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Unread post13 Dec 2022, 03:27

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Unread post13 Dec 2022, 03:30

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Unread post13 Dec 2022, 03:32

Next up on the Aerospace Channel...nuclear weapons.
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Unread post14 Dec 2022, 03:09

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Unread post17 Dec 2022, 21:42

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Artemis I Orion space capsule after taking its re-entry heat bath
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Unread post17 Dec 2022, 21:43

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