Hydra-70 is the U.S. 2.75-inch air-launched rocket family managed by General Dynamics Ordnance and Tactical Systems. Official sources describe it as a lightweight, multi-mission rocket family built around the MK66 motor, mission-specific warheads, and seven- or 19-tube launchers; cataloged conflict evidence includes U.S. transfers to Ukraine, Apache and Marine attack-helicopter use in Afghanistan and Operation Inherent Resolve, and Apache employment in the 1990 Gulf War.
U.S. security-assistance releases listed Hydra-70 aircraft rockets for Ukraine in 2023, later Defense Department fact sheets listed more than 20,000 committed rockets, and 2023 reporting documented Ukrainian Mi-24V integration with adapted M261 pods.
Role detailsDVIDS imagery from Jalalabad Airfield in April 2017 shows AH-64E crews loading a Hydra 70 rocket for a mission while supporting Operation Freedom's Sentinel and U.S. Forces Afghanistan.
Role detailsA 2016 DVIDS caption from Taji Airbase, Iraq documents a Hydra 70 rocket being loaded into an Apache pod for aircraft supporting Operation Inherent Resolve fires support to Iraqi security forces.
Army historical accounts of Operation Desert Storm describe Apache helicopters using Hydra-70 rockets in the opening attack on Iraqi early-warning radar sites.
Role detailsHydra 70 is best represented as a 2.75-inch rocket family built around the MK66 MOD 4 motor, selectable fuzes, and mission-specific warheads rather than as separate all-up rocket designations for every motor-warhead combination.
| Variant | Configuration | Designation notes |
|---|---|---|
| M151 HE | Unitary high-explosive point-detonation warhead | Army JAMS material describes the M151 as an anti-personnel and anti-materiel Hydra-70 warhead. Sources: PEO MS JAMS LOR Checklist |
| M229 HE / 17-Pounder | Heavier high-explosive warhead | Army JAMS material describes the M229 as an elongated M151 commonly referred to as the 17-Pounder. Sources: PEO MS JAMS LOR Checklist |
| M255A1 / M255A2 Flechette | Cargo flechette warheads | Army JAMS material describes the M255A1 and M255A2 as flechette warheads used primarily against antipersonnel targets. Sources: PEO MS JAMS LOR Checklist |
| M156 WP / M264 RP | Smoke and marking warheads | Army JAMS material identifies M156 as a white-phosphorus target-marking warhead and M264 as a red-phosphorus smoke-obscuration warhead. Sources: PEO MS JAMS LOR Checklist |
| M257 / M278 illumination | Visible and infrared illumination warheads | Army JAMS material describes M257 and M278 as battlefield target-illumination warheads, with M278 providing infrared illumination. Sources: PEO MS JAMS LOR Checklist |
| M274 / WTU-1/B practice | Training warheads | General Dynamics lists M274 smoke-signature and WTU-1/B practice warheads in the Hydra 70 family. Sources: HYDRA 70 Product Brochure 2024 |
| M282 HEI | High-explosive incendiary penetrator warhead | Army JAMS material describes the M282 as a delayed-fuze warhead for light armored vehicles, bunkers, and reinforced urban targets. Sources: PEO MS JAMS LOR Checklist |
Army photos, DVIDS imagery, and General Dynamics' product material show the Hydra-70 family carried by Apache helicopters, Cobra/Viper attack helicopters, F-16 aircraft, and light-attack aircraft that use 70 mm rocket stations.
| Carrier | Carrier type | Carriage evidence |
|---|---|---|
 | Attack helicopter | The Army's Latvia article shows AH-64 crews loading Hydra-70 rockets, and General Dynamics says the family can be mounted on Apache helicopters. |
 | Marine attack helicopter | NAVAIR lists the AH-1W weapons fit as including 2.75-inch rockets, and General Dynamics says the Hydra-70 family can be mounted on Cobra aircraft. Sources: Marines' AH-1W Super Cobra turns 20 | NAVAIR, HYDRA-70 Rocket |
 | Attack helicopter | DVIDS documents Marines loading Hydra-70 rockets onto an AH-1Z Viper before live-fire training, and Bell describes the AH-1Z's rocket and missile armament. |
 | Multirole fighter aircraft | General Dynamics lists F-16 among aircraft on which Hydra-70 can be mounted, and DVIDS documents Hydra-70 rockets loaded into a LAU-131/A launcher on an F-16C. Sources: HYDRA-70 Rocket, DVIDS F-16C Hydra-70 illumination rocket load |
 | Strike aircraft | Air & Space Forces says Sky Warden can launch 70 mm rockets such as Hydra 70, and L3Harris lists Hydra 70 among the aircraft's weapon systems. Sources: Armed and Dangerous, SKY WARDEN |
Hydra-70 also anchors related 70 mm rocket and launcher records: APKWS adds a guidance section to the Hydra rocket architecture, while M260/M261-style launchers carry the unguided family.
| Compatible item | Item type | Compatibility evidence |
|---|---|---|
 | Laser-guided 2.75-inch rocket family | NAVAIR describes APKWS II as a laser-guidance conversion of an unguided Hydra 2.75-inch rocket, with the guidance section installed between the warhead and Mk66 Mod 4 motor. Sources: APKWS | NAVAIR |
 | 19-round 70 mm rocket launcher | Arnold Defense says the M261 can fire many types of Hydra 70 rockets, and General Dynamics says Hydra-70 fires from existing seven- and 19-tube launchers. Sources: M261 Lightweight Launcher | Arnold Defense, HYDRA-70 Rocket |
U.S. Army Redstone history records the Hydra 70 name being adopted for the improved 2.75-inch rocket system.
Sources: Hydra 70 name adopted in 1983
General Dynamics says it has produced more than eight million Hydra 70 rockets since 1996 for the Army Tactical Aviation and Ground Munitions Project Office.
Sources: HYDRA 70 Product Brochure 2024
