RAF accepts new rocket? (10)
I believe the answer is:
spacecraft
'rocket?' is the definition.
(thesaurus)
'raf accepts new' is the wordplay.
'new' is an anagram indicator.
'raf'+'accepts'='rafaccepts'
'rafaccepts' with letters rearranged gives 'SPACECRAFT'.
(Other definitions for spacecraft that I've seen before include "Astronauts' vehicle" , "Challenger, perhaps" , "UFO perhaps" , "Explorer, say" , "Orbital vehicle" .)