What does the cryptic crossword clue "Von Braun for one had to sort kinetics etc out (6,9)" mean?

The wordplay uses an anagram. anagram of SORT + KINETICS + ETC = ROCKETSCIENTIST The answer is ROCKETSCIENTIST.

Von Braun for one had to sort kinetics etc out (6,9)

Daily Mail Cryptic #16945 | 6 Down | 2022-10-13 flower