CubeSats have dominated the satellite sector for nearly 25 years. Their cube-shaped design, measuring approximately 10 centimeters per side, can be scaled to fit various mission requirements. The CubeSat standard, widely adopted by commercial entities, military forces, NASA, and educational institutions, allows for cost-effective satellite development. Since the launch of the first CubeSat in 2003, nearly 3,000 have made their way into orbit. Initially confined to low-Earth orbit, these satellites have expanded their reach to high-altitude orbits, the Moon, and Mars.
Innovation in Satellite Design: DiskSat
Despite the success of CubeSats, the Aerospace Corporation sought to innovate the satellite design. Debra Emmons, Chief Technology Officer at Aerospace, shared insights on the new approach. The concept arose from Rich Welle, a recently retired scientist from the center’s xLab division. Emmons noted the initial inquiries focused on improving CubeSat technology by exploring different form factors.
Advantages of DiskSat Over CubeSat
The result was the development of the DiskSat. This innovative flat-panel format is simpler to stack for launch, similar to SpaceX’s approach with its Starlink satellites. However, DiskSats offer distinct advantages:
- Each DiskSat weighs about 35 pounds (16 kilograms), lighter than a typical 12U CubeSat.
- DiskSats provide over 13 times the surface area on one side compared to CubeSats.
- The expanded surface area allows for more powerful solar arrays, sensors, antennas, and other mission payloads.
The DiskSat design’s scalability and adaptability make it a promising option for a variety of missions. As the satellite industry evolves, the introduction of DiskSats reflects ongoing efforts to optimize space technology.
