Helium-3 (3He[1][2] see also helion) is a light, stable isotope of helium with two protons and one neutron. (In contrast, the most common isotope, helium-4, has two protons and two neutrons.) Helium-3 and hydrogen-1 are the only stable nuclides with more protons than neutrons. It was discovered in 1939.

The Heinkel HeS 3 (HeS - Heinkel Strahltriebwerke) was the world's first operational jet engine to power an aircraft. Designed by Hans von Ohain while working at Heinkel, the engine first flew as the primary power of the Heinkel He 178, piloted by Erich Warsitz on 27 August 1939.

氦-3是一种氦气 同位素气体， 化学符号 ³ He，气体具有无色，无味， 无臭 稳定的气体。 一般储存于气瓶中的高压气体，天然氦-3含量是1.38x10-6。 当其含量增加导致氧气含量低于19.5%时有可能引起窒息，需要配备自吸式呼吸面具。 2022年4月6日消息，据国外媒体报道，一项新的建模研究显示， 地核 中仍存有大量氦-3，正在不断向外泄漏。 [3] 氦-3的提取是一个极其复杂的过程。 人们首先需要将月球土壤加热到700 摄氏度 以上，才可以从中提取到氦-3。 开发、运送月球上的 …

根据科学家的研究探索，发现 氦-3 是一种非常完美的核聚变燃料，不仅让核聚变更容易发生，而且不会产生任何的污染。是未来人类最理想的核聚变能源。

Von Ohain's gaseous hydrogen-powered turbojet engine designated HeS 1 ran successfully in early 1937. The HeS 3B engine, which evolved in 1938, used internal fuel gasification initially rather than the desired atomized liquid fuel injection system used in later versions.

氦-3，是氦的同位素之一，元素符號為 3 He。它的原子核由二顆質子和一顆中子所組成。是穩定同位素。其相對豐度是0.000137%。 [1] 月球表面的風化層（表皮土）富含著大量的氦-3。

Helium-3, also written as 3 He, is a light isotope of helium having 2 protons but only one neutron and an atomic mass of 3. The existence of Helium-3 was first proposed in 1934 by the Australian nuclear physicist Mark Oliphant.

2021年10月14日 · Helium-3 atom is the stable isotope of helium with relative atomic mass 3.016029. The least abundant (0.000137 atom percent) isotope of naturally occurring helium. It contains a helion. Helium He-3 is under investigation in clinical trial NCT00846014 (Asthma Exacerbation and Helium-3 MRI).

The Heinkel HeS 3 (HeS - Heinkel Strahltriebwerke) was the world's first operational jet engine to power an aircraft. Designed by Hans von Ohain while working at Heinkel, the engine first flew as the primary power of the Heinkel He 178, piloted by Erich Warsitz on 27 August 1939.

The Heinkel HeS 3 was the world's first operational jet engine to power an aircraft. Designed by Hans von Ohain while working at Heinkel, the engine first flew as the primary power of the Heinkel He 178, piloted by Erich Warsitz on 27 August 1939.