Complex sentence: The 3BAS2 configuration of Titan 3B rocket proposed by Martin in mid- 1960's would have used for deep space missions with a Centaur upper stage, Algol strap-on for liftoff thrust augmentation.
Split into simpler sentences: The 3BAS2 configuration of Titan 3B proposed by Martin in mid- 1960's. Would have used Titan 3B for deep space missions with Centaur upper stage, Algol strapons for liftoff thrust augmentation.