Atlas V 400 Series
United Launch Alliance (ULA) offers multiple configurations of the Atlas V rocket. To carry payloads, the 400 Series has a fairing of four meters in diameter which
is available in three different lengths. Up to three solid rocket boosters can be added to increase its performance. The Atlas V 400 Series can carry a payload
weighing up to 33,660 lbs (15,260 kg) to low-Earth orbit, and up to 16,970 lbs (7,700 kg) into geostationary transfer orbit.
Atlas V 500 Series
The Atlas V 500 Series has a fairing of five meters in diameter (which also comes in three different lengths) to carry much larger payloads into orbit. This fairing volume is greater than an average single-family home. The Atlas V 500 Series can carry a payload weighing up to 41,570 lbs (18,850 kg) to low-Earth orbit, and up to 19,620 lbs (8,900 kg) into geostationary transfer orbit. Up to five solid rocket boosters can be added to increase its performance.
Vulcan
The ULA Vulcan has a fairing of 5.4 meters in diameter, comes in two different lengths, and has a multi-manifest option. Up to six solid rocket boosters can be added to increase its performance. Additionally, the Vulcan has a heavy configuration as well. The Vulcan can carry a payload weighing up to 60,000 lbs (27,200 kg) to low-Earth orbit, and up to 31,700 lbs (14,400 kg) into geostationary transfer orbit.
