▁( M oll us ca : ▁Gast rop oda ) ▁from ▁the ▁Mal ag asy ▁Republic ." ▁Records ▁of ▁the ▁A uck land ▁Institute ▁and ▁Museum ▁( 1 9 8 7 ): ▁ 1 2 3 - 1 3 4 . ▁ ▁Category : Ang ul oc lav us <0x0A> </s> ▁The ▁Roll s - Ro y ce ▁A E ▁ 3 0 0 7 ▁( US ▁military : ▁F 1 3 7 ) ▁is ▁a ▁ ▁tur bo fan ▁engine ▁produced ▁by ▁Roll s - Ro y ce ▁North ▁America , ▁sharing ▁a ▁common ▁core ▁with ▁the ▁Roll s - Ro y ce ▁T 4 0 6 ▁( AE ▁ 1 1 0 7 ) ▁and ▁A E ▁ 2 1 0 0 . ▁ ▁Development ▁ ▁In ▁ 1 9 8 8 , ▁All ison ▁Engine ▁Company ▁( then ▁owned ▁by ▁General ▁Mot ors ) ▁and ▁Roll s - Ro y ce ▁pl c ▁began ▁joint ▁studies ▁of ▁a ▁ 3 3 k N ▁( 7 , 5 0 0 ▁l bf ) ▁R B 5 8 0 ▁to ▁power ▁the ▁proposed ▁Short ▁Brothers ▁F J X ▁regional ▁jet , ▁combining ▁the ▁T 4 0 6 ▁core ▁with ▁a ▁Roll s - Ro y ce ▁low - press ure ▁sp ool . ▁By ▁late ▁ 1 9 8 9 , ▁amid ▁growing ▁importance ▁of ▁the ▁Roll s - Ro y ce ▁Tr ent ▁engine ▁and ▁uncertainty ▁over ▁the ▁Short ▁Brothers ▁project , ▁Roll s - Ro y ce ▁quit ▁and ▁All