SpaceX Reveals Advanced Spacewalk Suit Ahead Of Polaris Dawn Mission

SpaceX has recently taken a significant step forward in space exploration by unveiling a new spacesuit designed specifically for extravehicular activities (EVAs), commonly known as spacewalks. This announcement, made on May 4 through the company's website and social media platforms, introduces a suit based on the pressure suits currently used by astronauts aboard Crew Dragon flights but with essential upgrades for spacewalk capabilities.

The enhanced features of the EVA suit include innovative joint designs that offer softness and flexibility until pressurized, superior thermal management, and an advanced helmet equipped with a sun visor-like exterior coating. Additionally, the helmet comes with a camera and a heads-up display that provides vital status information about the suit during a spacewalk. The suit also includes umbilicals for life support, ensuring astronauts' safety and comfort in the vacuum of space.

The inaugural mission to utilize these new suits will be the Polaris Dawn, a private spaceflight under the Polaris program, funded by billionaire Jared Isaacman. Isaacman, alongside Kidd Poteet, Sarah Gillis, and Anna Menon, will embark on this mission, all donning the newly revealed suits for an EVA from the Crew Dragon spacecraft. Given Crew Dragon's design without an airlock, the spacecraft will need to depressurize for the spacewalk, marking a significant milestone in private space exploration.

During a SpaceX-hosted discussion on May 4, Sarah Gillis shared insights into the spacewalk planned for the Polaris Dawn mission, anticipated to last approximately two hours. This duration includes the time needed for depressurizing and repressurizing the spacecraft's cabin. A "skywalker" device at the front hatch will assist the astronauts in exiting the capsule, a novel approach to conducting spacewalks.

The astronauts will undertake a "test matrix" to assess the EVA suits' performance in microgravity, focusing on mobility and movement. This rigorous evaluation aims to ensure the suits meet the demanding conditions of space. Additionally, extensive ground testing of the suits has already been conducted, including a simulation where the Crew Dragon capsule was placed in a vacuum chamber to mimic the conditions of space.

Modifications were also made to the Dragon spacecraft to accommodate the spacewalk, including a repressurization system and material changes to mitigate outgassing. These adjustments underline SpaceX's commitment to safety and innovation, as Stu Keech, vice president of Dragon at SpaceX, highlighted the ongoing development and enhancement of the spacesuits.

Launching Towards New Frontiers

The Polaris Dawn mission, initially slated for late 2022 but now rescheduled for early summer, promises to push the boundaries of crewed space missions. The Falcon 9 rocket will launch the Crew Dragon spacecraft into an orbit reaching altitudes not seen since the Apollo 17 mission in 1972. This mission will explore the effects of increased radiation levels and test the spacecraft's communication capabilities through the Starlink constellation over a five-day orbit.

According to Keech, the Polaris Dawn mission's flight profile has been meticulously evaluated for risks associated with radiation and micrometeroid/orbital debris impacts. The mission's risk levels are within the acceptable range for a six-month ISS mission, ensuring that advancements in space exploration are pursued methodically and safely.

Jared Isaacman expressed confidence in the mission's planning and the measures taken to address the unique challenges of this flight profile. The Polaris Dawn mission not only represents a significant technological achievement for SpaceX but also marks an exciting chapter in the annals of space exploration, demonstrating the potential for private spaceflight to contribute to humanity's understanding and exploration of the cosmos.