LANTIRN With The F-14 Tomcat
Until the early 1990s, the F-14 Tomcat didn't have clearance to drop bombs even though all Tomcats were built with a Stores Management System (SMS) that included air-to-ground options as well as rudimentary software in the AWG-9. Early flight clearance work to clear the aircraft for air-to-ground were suspended due to development delays with the F-14 and it being shifted away from the air to ground mission. At the time, the Tomcat was so expensive (and lacked proper defensive electronic countermeasures (DECM) and radar homing and warning (RHAW) for overland operations) that the Navy did not want to risk it in the air-to-ground role. However, the TARPS mission had proven the Tomcat was survivable overland and upgrades to the Tomcat's DECM, expendables and RHAW gear were developed to increase its survivability. With the end of the Cold War and de-emphasis on the Fleet Air Defense mission, NAVAIR had renewed flight clearance work before Desert Storm so the F-14 could carry gravity bombs as well as laser guided bombs if the target was lased by another jet (first Tomcat LGB drop in combat was made by VF-41 in 1995 during operations over Bosnia with an A-6 Intruder providing the requisite target illumination). Meanwhile, the decision had been made by OPNAV to retire the A-6 altogether and allow the F-14 Block 1 Strike variant to take over as the precision strike platform for the air wing. However, the $1.6B Block 1 Strike program was canceled in budgetary cuts by 1994 with only enough funding to integrate the JDAM, which was years away. In late 1994, an unsolicited proposal from Martin Marietta was initiated to demonstrate how a USAF LANTIRN targeting pod could be rapidly integrated onto the Tomcat. This effort was done under the auspices of COMNAVAIRLANT using a fleet aircraft to integrate the digital 1553-based pod on an analog F-14B. In March 1995 a VF-103 fleet aircraft successfully dropped the first laser guided training rounds (LGTR) and quickly laser guided bombs (LGB). Due to the early success and interest from Fleet Commanders, NAVAIR began to procure pods and control units for deployment, resulting in VF-103 receiving the first LANTIRN pod June 14, 1996 in time for its upcoming deployment.
The basic LANTIRN was modified into LANTIRN Targeting System (LTS), the navigation pod was removed from the two-pod system and the targeting pod was improved for Tomcat use. The LTS featured a Global Positioning System and inertial measurement unit that provided the pod line-of-sight cueing and weapon release ballistics and eliminated the need for external cumbersome and time consuming boresight equipment.
Unlike the early versions, the LTS performed all weapon release calculations and presented release cues that it had generated to the aircrew. The LTS also had a masking avoidance curve display (preventing firing the laser at the jet) and eventually a north orientation curve and 40,000 feet capable laser. The latter became very useful allowing F-14s to employ LGBs above potential threat systems and it came into its own in the higher terrain in Afghanistan during Operation Enduring Freedom.
The LTS could also generate coordinates for any target located on the FLIR, and a latter software modification, known as T3 (Tomcat Tactical Targeting) increased the accuracy of the coordinates produced by the LTS and allowed generated coordinates for GPS/INS guided weapons (JDAM, JSOW and WCMD). The first combat use of this was in OEF when an F-14 generated coordinates for a B-52 that dropped CBU-103 WCMD (Wind-Corrected Munitions Dispenser), which is basically an INS-guided cluster bomb from over 40,000 feet. These weapons scored hits on a vehicle convoy that had stopped after the first vehicle was destroyed by the Tomcat with LGBs.
The pod also featured an internal computer with ballistics data for the various precision munitions carried by the F-14. Data is fed to the pod by the Tomcat’s AWG-9 (F-14A and F-14B) and AN/APG-71 (F-14D) radar, but the LTS in turn only sends video and guidance symbology to the crew's cockpit displays. This means that few wiring and software changes had to be made to the Tomcat in order for it to operate the LTS. All pod controls are in the RIO’s cockpit, but the bomb release button is situated with the pilot. The LTS had a price tag of around 3 million US Dollars each and due to these high costs, only 75 were bought for fleet use. Typically, an F-14 squadron brought 6 to 8 pods with them on deployment, which would be permanently fitted to the non-TARPS jets.
The first combat use of the LTS was in December 1998 during Operation Desert Fox by VF-32.
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