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The Titan IV was the last of the Titan family of rockets, originally developed by the Glenn L. Martin Company in 1958. It was retired in 2005 due to their high cost of operation and concerns over its toxic hypergolic propellants, and replaced with the Atlas V and Delta IV launch vehicles under the EELV program.
The Titan IV was an extended length Titan III with solid rocket boosters on its sides. The Titan IV could be launched with a Centaur upper stage, the USAF Inertial Upper Stage (IUS), or no upper stage at all.
Feb 23, 1997 · The Titan IVB increased payload capability by 25 percent over previous Titan IV rockets, which were subsequently renamed Titan IVA. Although nearly identical to the Titan IVA in other respects, the Titan IVB introduced upgraded solid rocket motors manufactured by Alliant Techsystems, a company which had just recently purchased booster designer ...
The Titan IVB was the U.S. Air Force’s largest and most powerful expendable single-use rocket. It was a space launch vehicle used to place satellites into orbit.
The so-called Solid Rocket Motor Upgrade (SRMU) could improve Titan IVA performance by about 25 percent. The SRMU upgrade eventually resulted in the introduction of a new Titan IV variant named Titan IVB. An Aerojet dual chamber first stage engine could produce a thrust of 542,600 pounds.
Oct 5, 2001 · As the most powerful U.S. expendable rocket in service today, the Titan 4B is capable of launching payloads weighing 38,800 pounds into low-Earth orbit around the planet's poles from Vandenberg.
The Titan family of rockets continued to support NASA and U.S. Department of Defense missions for nearly 50 years, and in 1990, the Titan IV was developed to become the nation’s most powerful launch vehicle capable of boosting critical national security satellites weighing over 12,700 pounds to geosynchronous orbit.
