One Titan V proposal was for an enlarged Titan IV , capable of lifting up to 90,000 pounds ( 41,000 kg ) of payload .
The Titan V was a proposed development of the Titan IV , that saw several designs being suggested .
One development   proposal was for an enlarged Titan IV , capable of lifting up to 90,000 pounds ( 41,000 kg ) of payload .
The Titan V was a proposed development of the Titan IV , that saw several designs being suggested .