Cold Gas Thrusters Heat Up: NASA’s Psyche Mission Launch Pushed Back

NASAEstablished in 1958, the National Aeronautics and Space Administration (NASA) is an independent agency of the United States Federal Government that succeeded the National Advisory Committee for Aeronautics (NACA). It is responsible for the civilian space program, as well as aeronautics and aerospace research. Its vision is "To discover and expand knowledge for the benefit of humanity." Its core values are "safety, integrity, teamwork, excellence, and inclusion." NASA conducts research, develops technology and launches missions to explore and study Earth, the solar system, and the universe beyond. It also works to advance the state of knowledge in a wide range of scientific fields, including Earth and space science, planetary science, astrophysics, and heliophysics, and it collaborates with private companies and international partners to achieve its goals.” data-gt-translate-attributes=”[{“attribute”:”data-cmtooltip”, “format”:”html”}]”>NASA and SpaceXCommonly known as SpaceX, Space Exploration Technologies Corp. is a private American aerospace manufacturer and space transport services company that was founded by Elon Musk in 2002. Headquartered in Hawthorne, California, the company designs, manufactures, and launches advanced rockets and spacecraft. SpaceX's ultimate goal is to reduce space transportation costs and enable the colonization of Mars.” data-gt-translate-attributes=”[{“attribute”:”data-cmtooltip”, “format”:”html”}]”>SpaceX postpone the Psyche mission launch to October 12 for further thruster parameter verification, with a launch window until October 25.

Launch Rescheduled

NASA and SpaceX have pushed back the Falcon Heavy launch of the Psyche mission from Launch Complex 39A at Kennedy Space Center. They now aim to launch on October 12 at 10:16 a.m. EDTEDT is an abbreviation for Eastern Daylight Time, the time zone for the eastern coast of the United States and Canada when observing daylight saving time (spring/summer). It is four hours behind Coordinated Universal Time. New York City, Washington, D.C., Boston, and the Kennedy Space Center are in the Eastern Time Zone (ET).” data-gt-translate-attributes=”[{“attribute”:”data-cmtooltip”, “format”:”html”}]”>EDT, a week later than the previous target of October 5.

Reasons for Delay

The change allows the NASA team to complete verifications of the parameters used to control the Psyche spacecraft’s nitrogen cold gas thrusters. These thrusters are used to point the vehicle in support of science, power, thermal, and other demands, such as spacecraft orientation and momentum management. The parameters were recently adjusted in response to updated, warmer temperature predictions for these thrusters. Operating the thrusters within temperature limits is essential to ensure the long-term health of the units.

The verification activities involve rerunning simulations and fine-tuning adjustments as required to the flight parameters and procedures.

[embedded content]
There are millions of asteroids in our solar system, so why is NASA going to the asteroid Psyche? Scientists think this particular asteroid, which orbits the Sun between MarsMars is the second smallest planet in our solar system and the fourth planet from the sun. It is a dusty, cold, desert world with a very thin atmosphere. Iron oxide is prevalent in Mars' surface resulting in its reddish color and its nickname "The Red Planet." Mars' name comes from the Roman god of war.” data-gt-translate-attributes=”[{“attribute”:”data-cmtooltip”, “format”:”html”}]”>Mars and JupiterJupiter is the largest planet in the solar system and the fifth planet from the sun. It is a gas giant with a mass greater then all of the other planets combined. Its name comes from the Roman god Jupiter.” data-gt-translate-attributes=”[{“attribute”:”data-cmtooltip”, “format”:”html”}]”>Jupiter, could be part of the metal-rich interior of a planetesimal, a building block of the rocky planets in our solar system. Visiting Psyche and studying it up close could help us understand how planets like Mercury, VenusVenus, the second planet from the sun, is named after the Roman goddess of love and beauty. After the moon, it is the second-brightest natural object in the night sky. Its rotation (243 Earth days) takes longer than its orbit of the Sun (224.7 Earth days). It is sometimes called Earth's "sister planet" because of their similar composition, size, mass, and proximity to the Sun. It has no natural satellites.” data-gt-translate-attributes=”[{“attribute”:”data-cmtooltip”, “format”:”html”}]”>Venus, Earth, and Mars came to be. Credit: NASA/JPLThe Jet Propulsion Laboratory (JPL) is a federally funded research and development center that was established in 1936. It is owned by NASA and managed by the California Institute of Technology (Caltech). The laboratory's primary function is the construction and operation of planetary robotic spacecraft, though it also conducts Earth-orbit and astronomy missions. It is also responsible for operating NASA's Deep Space Network. JPL implements programs in planetary exploration, Earth science, space-based astronomy and technology development, while applying its capabilities to technical and scientific problems of national significance.” data-gt-translate-attributes=”[{“attribute”:”data-cmtooltip”, “format”:”html”}]”>JPL-Caltech/ASU

Preparation and Launch Opportunities

NASA, SpaceX, and Psyche mission managers met on September 28, to conduct a Flight Readiness Review (FRR) at Kennedy Space Center in Florida. During the FRR, teams provided an update on the mission status, and certified the readiness to initiate final launch preparation activities including a static fire test on September 29.

Psyche has launch opportunities every day between October 12 and October 25.