Complex sentence: The Salmson powered JG.40 made its first flight on 2 October 1930, and the second prototype, with the Lorraine engine flew early in November 1931.
Split into simpler sentences: The Salmson powered JG.40 made its first flight on 2 October 1930. The second prototype, with the Lorraine engine flew a year later, early in November 1931.