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The Low-Cost Guided Imaging Rocket was a weapons system under development for the
US Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
as part of ONR's Low-Cost Imaging Terminal Seeker (LCITS) FNC.LOGIR moves a step closer to the fleet
/ref> It transitioned as the weapon used in the Medusa
Joint Capability Technology Demonstration The Under Secretary of Defense for Acquisition and Sustainment, or USD(A&S), is the Principal Staff Assistant (PSA) and advisor to the Secretary of Defense for all matters relating to acquisition and sustainment in the Department of Defense. Thi ...
with South Korea. The program provided a precision guided 2.75 inch (70 mm)
rocket A rocket (from it, rocchetto, , bobbin/spool) is a vehicle that uses jet propulsion to accelerate without using the surrounding air. A rocket engine produces thrust by reaction to exhaust expelled at high speed. Rocket engines work entire ...
for use with existing
Hydra 70 The Hydra 70 rocket is a diameter fin-stabilized unguided rocket used primarily in the air-to-ground role. It can be equipped with a variety of warheads, and in more recent versions, guidance systems for point attacks. The Hydra is widely used by ...
systems in service, as such it has many similarities with the
Advanced Precision Kill Weapon System The AGR-20 Advanced Precision Kill Weapon System (APKWS) is a design conversion of Hydra 70 unguided rockets with a laser guidance kit to turn them into precision-guided munitions (PGMs). APKWS is approximately one-third the cost and one-third ...
program. The principal difference between the systems is that while APKWS uses terminal
laser homing Laser guidance directs a robotics system to a target position by means of a laser beam. The laser guidance of a robot is accomplished by projecting a laser light, image processing and communication to improve the accuracy of guidance. The key ide ...
, requiring the target to be 'painted' until impact, LOGIR would guide to a position supplied by the launching aircraft, using
imaging infrared Infrared thermography (IRT), thermal video and/or thermal imaging, is a process where a thermal camera captures and creates an image of an object by using infrared radiation emitted from the object in a process, which are examples of infrared ...
in the terminal phase making it a true
fire-and-forget Fire-and-forget is a type of missile guidance which does not require further external intervention after launch such as illumination of the target or wire guidance, and can hit its target without the launcher being in line-of-sight of the targ ...
weapon. Another advantage of LOGIR was that it was "especially effective against swarm attacks by enemies like small boats, as there’s no need for ongoing guidance." The South Korean version, designated K-LOGIR, is used on the ROK Marine Corps ''Bigung'' (Poniard) mobile coastal defense system. Bigung is a 6×6 truck fitted with 2×18-round containers for 36 rockets to counter North Korean Fast Inshore Attack Craft (FIAC), landing craft and landing vehicles. The rockets are equipped with the LCITS using IIR imaging technology with an additional low-cost inertial correction unit. LOGIR is designed to defeat predominantly small-scale, high-speed surface targets, but because of the limited cost requirements its use for less-contrast ground targets is less effective; it has a weight below and a length of with range greater than .


Development

South Korea's contribution in the LOGIR program are the following: *Electronics for guidance and control system (production only, design by the USA) *Electronics for control actuation system (DSP and PWM inverter board) *Assembly parts for control actuation system (CAS frame and integrated BLDC motor) *Airframe structure and fins (canard fin, CAS skin, seeker skin) *Cruciform tail fins and nozzle assembly *Warhead and fuze attachment improvement


Specifications

* Diameter: 70 mm * Guidance:
INS INS or Ins or ''variant'', may refer to: Places * Ins, Switzerland, a municipality * Creech Air Force Base (IATA airport code INS) * Indonesia, ITF and UNDP code INS Biology *''Ins'', a New World genus of bee flies * INS, the gene for the insulin ...
midcourse/
Imaging infrared Infrared thermography (IRT), thermal video and/or thermal imaging, is a process where a thermal camera captures and creates an image of an object by using infrared radiation emitted from the object in a process, which are examples of infrared ...
terminal. * Motor: Existing Hydra 70 motors


See also

*
Direct Attack Guided Rocket The Direct Attack Guided Rocket (DAGR) is a weapons system under development by Lockheed Martin. The program goal is to provide a low cost 2.75 inch (70 mm) precision guided rocket which is compatible with existing Hellfire II syste ...
*
Guided Advanced Tactical Rocket - Laser The Guided Advanced Tactical Rocket (GATR) is a weapons system under development by Orbital ATK and Elbit Systems. It is intended to provide a low-cost guided missile compatible with existing unguided 70mm rocket launch platforms such as the Hydra ...
*
Advanced Precision Kill Weapon System The AGR-20 Advanced Precision Kill Weapon System (APKWS) is a design conversion of Hydra 70 unguided rockets with a laser guidance kit to turn them into precision-guided munitions (PGMs). APKWS is approximately one-third the cost and one-third ...
*
Roketsan Cirit Cirit is a laser-guided 70 mm missile system under production by Turkish arms industry manufacturer ROKETSAN. It is one of the projects launched by Turkey to equip the Turkish Army's T-129 Atak, AH-1P Cobra and AH-1W Super Cobra attack he ...


References


External links


Air-Launched 2.75-Inch Rockets - Designation Systems

Low-Cost Imaging Terminal Seeker (LCITS) (video)
{{US military rockets Air-to-surface missiles of the United States