The General Purpose bombs are a family of free fall, "dumb" ordnance used by the U.S military. The primary weapons effects are due to blast and fragmentation. These bombs are manufactured in a variety of sizes and weights and can be fitted with various tail kits and guidance systems, making them "smart" weapons.
The Joint Direct Attack Munition is a guidance tail kit that converts existing unguided free-fall bombs into accurate, adverse weather "smart" munitions. With the addition of a new tail section that contains an inertial navigational system and a global positioning system guidance control unit, JDAM improves the accuracy of unguided, general purpose bombs in any weather condition. JDAM is a joint U.S. Air Force and Department of Navy program.
The Paveway GBUs are a family of laser-guided bombs (LGBs). These are in fact a laser guidance kit applicable to conventional unguided bombs. The LGBs home on reflected laser beam energy directed on the target by either the launching aircraft, by a third aircraft or by ground-based troops operating a laser designator.
The Guided Bomb Unit-28 (GBU-28) is a special weapon developed for penetrating hardened Iraqi command centers located deep underground. The GBU-28 is a 5,000-pound laser-guided conventional munition that uses a 4,400-pound penetrating warhead. The bomb's guidance package was a GBU-24/B Paveway III GCU with software modifications to handle its different aerodynamics.
The Tactical Munition Dispenser munitions are a family of unguided cluster bombs. The TMD munitions include the CBU-87 Combined Effects Munition, the CBU-89 GATOR mine dispensing system and CBU-97 Sensor Fuzed Weapon.
The Wind Corrected Munitions Dispenser (WCMD) is a modification kit to equip submunition dispensers of the Tactical Munitions Despenser (TMD) family with a guidance system. The baseline WCMD incorporates an inertial navigation system (INS), and has flip-out control fins to steer the bomb. Additional GPS guidance was considered unnecessary, because the delivery aircraft are equipped with a GPS system. The latter is used to update the WCMD's INS immediately before release, and the resulting accuracy is good enough for cluster bombs. The WCMD guidance kit can replace the tail of any TMD-based cluster bomb.
The GBU-39/B is a small precision-guided munition. Due to its size, aircraft can carry more, and attack more targets in a single sortie. The weapon is suitable for fighter aircraft, bombers and unmanned combat aircraft (UCAV). It uses a multi-purpose warhead for penetration and blast/fragmentation effects, and is guided by a GPS-enhanced inertial navigation system. Although the SDB features a significantly smaller warhead than existing bombs, it is still adequate for many typical targets. The smaller warhead also tends to reduce collateral damage.
The GBU-53/B StormBreaker is the winner of the SDB Increment II program. It is equipped with an improved seeker that features three modes of operation: millimeter-wave radar, uncooled imaging infrared and semiactive laser.
The AGM-154 Joint Standoff Weapon (JSOW) precision strike weapon that can carry several different lethal packages. The weapon’s standoff range allows the JSOW to remain outside the threat envelopes of enemy point defenses while effectively engaging and destroying targets.
The GBU-44/B Viper Strike is based on the BAT (Brilliant Anti-Tank) guided anti-tank submunition developed as a payload for the MGM-137B TSSAM and later the MGM-140 ATACMS missiles. The Viper Strike is an unpowered glide bomb with cruciform folding wings and four wrap-around tailfins. The BAT's acoustic/IIR guidance package was replaced by a semi-active laser seeker.
The GBU-43/B Massive Ordnance Air Blast bomb, often referred to as the "Mother of All Bombs", is the most powerful non-nuclear weapon in America's arsenal. It has a relatively thin casing, as it is not a penetrator, but a "demolition bomb" designed for a surface burst.
The GBU-57/B Massive Ordnance Penetrator (MOP) is a 30,000-pound penetration weapon intended to defeat a set of hard and deeply buried targets such as concrete bunkers and underground facilities. It is designed to be released from high altitudes by the U.S. Air Force B-2 Spirit and B-52H Stratofortress bombers.
The B61 is a variable yield thermonuclear bomb designed for carriage by high speed/supersonic aircraft and release from high and low altitudes aided by a parachute and a delayed fuze. It is a two stage radiation implosion weapon featuring light weight, variable yield options and flexible fuzing and delivery options.
The B-83 is a variable yield, gravity free fall, nuclear bomb developed as the most powerful nuclear free fall bomb produced for the US military. The B-83 has been designed for release at supersonic speed (up to Mach 2) and low/high altitudes by the B-1 bomber. It features a parachute retardation system and insensitive explosives to minimize accidental detonation of the nuclear device. The B-83 is heavier than the B-61 and is more suitable for release by strategic bombers such as the B-1, B-2 and B-52.