Editing Solid rocket booster (section)

== Launchers that use solid rocket boosters ==
Some launchers use a fixed number of boosters :
* [[Space Launch System]]: two ([[Space Launch System#Solid Rocket Boosters|SLS Solid Rocket Boosters]])
* [[Space Shuttle]]: two ([[Space Shuttle Solid Rocket Booster|Space Shuttle Solid Rocket Boosters]])
* [[Ariane 5]]: two ([[Ariane 5#Solid boosters|P241/P238]]) 
* [[LVM3]] : two ([[LVM3#S200 solid boosters|S200]])

Some launchers use a variable number of boosters depending on payload and target orbit :
* [[Atlas V]]: zero, 1, 2, 3, 4, or 5 ([[Graphite-Epoxy Motor|GEM-63]])
* [[Delta II]]. Often launched with 9 SRBs, but sometimes fewer.
* [[Delta IV Medium]]: zero, 2, or 4 [[Graphite-Epoxy Motor]]s (GEM 60s) [[strap-on booster]]s 
* [[Polar Satellite Launch Vehicle|PSLV]]: 2, 4, or 6 ([[Polar Satellite Launch Vehicle#First stage (PS1)|S9/S12]]) and [[S139 Booster|S139]] First Stage
* [[Ariane 6]]: two or four ([[P120C]]) 
* [[Vulcan Centaur]]: zero, 2, 4, or 6 ([[GEM-63XL|GEM 63XL]])