NASA is investing in a novel approach to space deployment with the DiskSat program, launching flat, disc-shaped satellites that resemble UFOs. the technology, developed by The Aerospace Corporation, aims to lower the cost and accelerate the creation of satellite networks in low Earth orbit-a critical area for expanding communications and Earth observation capabilities. A recent technology exhibition saw four 40-inch DiskSats successfully launched via Rocket Lab earlier this month, marking a key step in evaluating this option to customary CubeSats.
NASA is funding a mission to launch DiskSats, a new type of spacecraft resembling a flat, circular disc – often likened to a UFO. This innovative design offers a more efficient way to deploy numerous satellites in a single rocket launch, potentially revolutionizing access to space.
Developed by The Aerospace Corporation in California, DiskSats aim to significantly reduce the cost and accelerate the deployment of satellite constellations in low Earth orbit. “The goal is to rapidly and affordably populate orbit with a large number of satellites,” explained Catherine Venturini, the project’s principal investigator.
How DiskSats Differ From CubeSats
DiskSats represent an alternative to CubeSats, the commonly used, cube-shaped satellites designed for cost reduction. However, CubeSats are limited by their small surface area, which restricts the capacity for solar panels and antennas. NASA points out that the compact size of CubeSats also limits the space available for scientific instruments requiring exposure to the space environment.
In contrast, DiskSats offer a larger surface area, allowing for optimal placement of components like solar panels. The flat shape also reduces drag in orbit, improving flight efficiency, according to The Aerospace Corporation. This increased efficiency is crucial as the demand for low Earth orbit satellites continues to grow.
DiskSat Design and Launch Strategy
The DiskSat design shares similarities with SpaceX’s Starlink satellites, which also feature a flat, disc-like form factor. SpaceX currently launches thousands of Starlink satellites by stacking them during ascent on its Falcon 9 rocket, maximizing the number of satellites deployed per mission. DiskSats employ a similar stacking concept to increase the number of satellites launched in a single mission.
Earlier this month, The Aerospace Corporation successfully launched four 40-inch diameter DiskSats as a technology demonstration. The launch was conducted via Rocket Lab, and the satellites were successfully placed into low Earth orbit. The company announced the successful deployment via a social media post.
Testing and Potential Applications of DiskSats
The DiskSats will now undergo testing to evaluate their performance and maneuverability in low Earth orbit, including very low Earth orbit below 350 kilometers from the Earth’s surface. While their smaller size may limit the amount of equipment they can carry, the flexible design allows for a variety of functions.
Primary applications for DiskSats include communications, navigation, and weather-related missions. The company plans to collaborate with clients to leverage the potential of DiskSats in various space applications requiring cost-effective and rapid solutions.
