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IPFS News Link • Science, Medicine and Technology

Princeton Satellite Systems $100 Million Plan for a Fusion Space Drive by 2027

• https://www.nextbigfuture.com, Brian Wang

It should produce between 5-10 Newtons thrust per each MW of generated fusion power, with a specific impulse (Isp) of about 10,000-20,000 seconds. They would have 200 kW – 2MW available as electrical power. Approximately 35% of the fusion power goes to thrust, 30% to electric power, 25% lost to heat, and 10% is recirculated for the RF heating. The design uses a specially shaped radio waves (RF) "antenna" to heat the plasma.

The ISP is about 20,000. 5 to 10 newtons are generated per megawatt of fusion power. They are looking at 1 to 2 megawatts for the initial space system. This would thus produce 10 to 20 newton using a 2-megawatt system. They want to get their machine cycle down to 3 years. They want to complete the system for less than $100 million.

They believe they can also make a pure energy generation system. They refer to this as closed loop mode.


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