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Course Correction Keeps Parker Solar Probe on Track for Venus FlybyNASA’s Parker Solar Probe executed a short maneuver o...
10/08/2023

Course Correction Keeps Parker Solar Probe on Track for Venus Flyby

NASA’s Parker Solar Probe executed a short maneuver on Aug. 3, 2023, that kept the spacecraft on track to hit the aim point for the mission’s sixth Venus flyby on Monday, Aug. 21, 2023. ​

Operating on preprogrammed commands from mission control at the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, Parker fired its small thrusters for 4.5 seconds, enough to adjust its trajectory by 77 miles and speed up – by 1.4 seconds – its closest approach to Venus. The precise timing and position are critical to that flyby, the sixth of seven approaches in which Parker uses the planet’s gravity to tighten its orbit around the Sun.

β€œParker’s velocity is about 8.7 miles per second, so in terms of changing the spacecraft’s speed and direction, this trajectory correction maneuver may seem insignificant,” said Yanping Guo, mission design and navigation manager at APL. β€œHowever, the maneuver is critical to get us the desired gravity assist at Venus, which will significantly change Parker’s speed and distance to the Sun”.

Parker Solar Probe will be moving 394,742 miles per hour when it comes within just 4.5 million miles from the Sun’s surface – breaking its own record for speed and solar distance – on Sept. 27, 2023. Follow the spacecraft’s journey through the inner solar system on the Parker Solar Probe website.

By Michael Buckley
Johns Hopkins Applied Physics Laboratory

AuthorDesiree ApodacaPosted onAugust 10, 2023

Technicians Add β€œTarget” to NASA Artemis II Rocket Hardware A critical auxiliary target for NASA’s Artemis II mission is...
10/08/2023

Technicians Add β€œTarget” to NASA Artemis II Rocket Hardware

A critical auxiliary target for NASA’s Artemis II mission is ready for flight following testing at United Launch Alliance’s (ULA) Florida facility. Teams with the company added the target onto the in-space propulsion stage for NASA’s SLS (Space Launch System) rocket at ULA’s Delta Operations Center at Cape Canaveral Space Force Station in Florida, May 16. Following the safe separation of NASA’s Orion spacecraft from the rocket’s upper stage, the four astronauts aboard Orion will use the target affixed to the in-space stage for a proximity operations demonstration to test Orion’s piloting qualities. The recently installed target underwent illumination testing in May to ensure the target will be visible in the different lighting conditions of space.

The SLS rocket delivers propulsion in phases to send the Artemis missions to the Moon. Its ICPS (interim cryogenic propulsion stage) and its single RL10 engine fires twice during the Artemis II mission to put the Orion spacecraft and astronauts into a high-Earth orbit, where they will then check out Orion’s manual handling qualities using the ICPS and its auxiliary target before then heading to the Moon.

During the demonstration, astronauts will use the two-foot target to test navigation and other critical Orion systems to assess its ability to approach and fly alongside another large spacecraft in space before future Artemis missions that require docking capabilities.

NASA is working to land the first woman and first person of color on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with the Orion spacecraft, advanced spacesuits and rovers, the Gateway in orbit around the Moon, and commercial human landing systems. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single mission.

Image credit: ULA

Last Updated: Aug 10, 2023
Editor: Lee Mohon
Tags: Artemis, Moon to Mars, Orion Spacecraft, Space Launch System

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