Complex sentence: In the West the theory was developed in the early 1950s by Richard Whitcomb at NASA, and Dietrich Küchemann at the British Royal Aircraft Establishment, leading to their appearance on aircraft such as the Convair 990 and the Handley Page Victor B.2 bomber.
Split into simpler sentences: In the West the theory was developed in the early 1950s by Richard Whitcomb at NASA, and Dietrich Küchemann at the British Royal Aircraft Establishment. This work led to their appearance on aircraft such as the Convair 990 and the Handley Page Victor B.2 bomber.