Titan IV
| Titan IVB | ||
|---|---|---|
| Stages | 2 or 3 | |
| 0 - Solid Boosters | Engines | Solid Fuel |
| Thrust | 1,700,000 lbf (7.56 MN) X 2 = 3,400,000 lbf (15.12 MN) | |
| Burn time | 120 seconds | |
| Fuels | Solid Fuel | |
| 1 - 1st Stage | Engines | LR87 X 2 |
| Thrust | 430,000 lbf (1,913 kN) | |
| Burn time | 164 seconds | |
| Fuels | A-50 hydrazine/N204 | |
| 2 - 2nd Stage | Engine | LR91 X 1 |
| Thrust | 100,000 lbf (445 kN) | |
| Burn time | 223 seconds | |
| Fuels | A-50 hydrazine/N204 | |
| 3 - 3rd Centaur Stage | Engine | RL-10 X 2 |
| Thrust | 30,000 lbf (150 kN) | |
| Burn time | 625 seconds | |
| Fuels | LOX/Liquid Hydrogen | |
| Launch Vehicle | 1st Launch June, 1989 | |
| Payload LEO 28-deg | 47,800 lb (21,682 kg) | |
| Payload LEO Polar orbit | 38,800 lb (17,599 kg) | |
| Payload Geo-sync orbit | 12,700 lb (5,761 kg) | |
| Payload Escape Velocity | 12,470 lb (5,655 kg) | |
| Table of contents |
|
2 Background 3 General Characteristics 4 Reference |
The Titan IVB consists of a liquid-fueled core and two large solid rocket boosters. It is launched on the solids; the liquid core ignites about 2 minutes into flight.
The Titan IVB core consists of an LR87 liquid-propellant rocket that features structurally independent tanks for its fuel (Aerozine 50) and oxidizer (Nitrogen Tetroxide). This minimizes the hazard of the two mixing if a leak should develop in either tank. Additionally the engine propellant can be stored in a launch-ready state for extended periods. The second stage consists of an LR91 liquid propellant rocket engine attached to an airframe, like stage 1. For increased performance Titan IVB also uses two solid propellant strap-on boosters.
Titan III development began in 1961 with the Titan IIIA. Years later, the Titan IVB evolved from the Titan III family and is similar to the Titan 34D. The last Titan IVA was launched in August 1998. The first Titan IVB flew on Feb. 23, 1997. The Titan IVB is an upgraded rocket having a new guidance system, flight termination system, ground checkout system, solid rocket motor upgrade and a 25 percent increase in thrust capability.
Mission
The Titan IVB is a space booster used by the Air Force. It is launched from Cape Canaveral Air Force Station, Fla., and Vandenberg Air Force Base, Calif.Features
The Titan IVB is the most recent and largest unmanned space booster used by the Air Force. It provides assured capability for launch of space shuttle-class payloads. The vehicle is flexible in that it can be launched with no upper stage, or one of two optional upper stages for greater and varied carrying ability.Background
The Titan rocket family was established in October 1955 when the Air Force awarded Lockheed Martin (the former Glenn L. Martin Company) a contract to build an intercontinental ballistic missile (SM-68). It became known as the Titan I, the nation's first two-stage ICBM and replaced the Atlas ICBM as the second underground vertically stored, silo-based ICBM. Both stages of the Titan I used liquid oxygen and alcohol as propellants. A subsequent version of the Titan family, the Titan II, was similar to the Titan I, but was much more powerful. Designated as LGM-25C, the Titan II was the largest missile at the time, to be developed by the USAF. The Titan II had newly developed engines which used Aerozine 50 and Nitrogen Tetroxide as fuel and oxidizer. General Characteristics
Reference