Pellet-Beam Propulsion System

About Pellet-Beam Propulsion System:

• The pellet-beam concept was partly inspired by the Breakthrough Starshot initiative, which is working on a 'light-sail' propulsion system.
• This system requires two spacecraft – one that sets off for interstellar space, and one that goes into orbit around Earth.
• The spacecraft orbiting Earth would shoot a beam of tiny microscopic particles at the interstellar spacecraft.
• Those particles would be heated up by lasers, causing part of them to melt into plasma that accelerates the pellets further, a process known as laser ablation.
• Those pellets could reach 120 km/second (75 miles/second) and either hit the sail of the interstellar spacecraft or repel a magnet within it, helping to propel the spacecraft to huge speeds that would let it whizz out of our heliosphere – the bubble of the solar wind around our Solar System.
• This proposal examines a new propulsion architecture for fast transit of heavy (1 ton and more) payloads across the Solar System and to the interstellar medium.

 

---

Q1) What is a propulsion system?

Propulsion means to push forward or drive an object forward. A propulsion system is a machine that produces thrust to push an object forward. On airplanes, thrust is usually generated through some application of Newton's third law of action and reaction. 

Source: Radical NASA Propulsion Concept Could Reach Interstellar Space in Under 5 Years