What is the effect of having the most essential machine on a flight deck be also the most one that depends on software? In the case of the U.S. Navy Ford-class carriers, the issue continues to revert to EMALS, the Electromagnetic Aircraft Launch System that is intended to substitute steam catapults and enable greater sortie generation with reduced airplane wear. Theoretically, EMALS also expands the launch envelope of all classes of heavy fighter to as light as unmanned aircraft. Practically, the question has been whether that commitment is applicable when the ship is requested to maintain months of daily and high-volume operations, without the obtuse indulgences of test schedules and shore-side engineering safety nets.
The initial status of the Ford program was predetermined by the failure of reliability of both EMALS and its partner system, Advanced Arresting Gear (AAG). Various tests have noted regular technical failures, integration issues and maintenance needs failing to meet the initial manpower and readiness guesses and as the lead ship increased in cost to more than 13 billion dollars. Such program-level issues are familiar, but the more significant engineering narrative is the behavior of reliability at actual operating rate: repeated launch-and-recovery operations, heating and vibration, part wear, software upgrades, power-quality variations, and the human factor of troubleshooting in the sea where no schedule allowance exists.
An EMALS problem is not perceived as a single failure by the air wing of a carrier. Launch disruptions squeeze deck operations, cram aircraft maintenance into shrinking schedules, and jitter into ordnance and fueling operations. In the case of a ship that is assigned lengthy missions, the allowance of “workarounds” is further reduced, since the generation of sorties is as much of a logistic and endurance issue as it is of an aviation one.
Operational stress is no longer something abstract. The USS Gerald R. Ford that is the lead ship has spent over eight months at sea in a long rotation, a duration that has been reported through coverage as having over eight months at sea and the cumulative burden sustained tasking has on engineering systems and crews. The deployment has been shown by the Navy as a test of being ready, however, in an engineering view it is a long-duration reliability test in conditions which are not reproducible through scripted tests by itself. EMALS either becomes a force-multiplier or a pacing item based on the capabilities of the ship to continue to launch an aircraft day after day.
AAG is also relevant in this case, as launch and recovery represent one operation cycle. According to NAVAIR, AAG was a more modular system with digital controls that would have required less maintenance and fewer manpower than the older Mk-7 with built-in test and diagnostics by the Health Monitoring Assessment and Prognostics technology. The same architecture is an indication of the direction Ford-class aviation support has gone: a greater number of sensors, a greater amount of data, and increasingly depending on the software-defined behavior. Its merit is better control over forces on aircraft and quicker adjustment of various weight classes. The tradeoff here is that errors may be concealed in power conditioning or control logic or interactions between components that require specialized skills and tools.
To make the situation even more difficult, EMALS is not coming on a “silent” ship. The Ford-class construction incorporation delivered over 23 new technologies into the first hull with other mission-critical modifications including high-technology weapons elevators and a new power architecture. The outcome is a transport in which uptime of the launch system is no longer exclusive to the catapult track, but rather of the overall electrical and digital ecosystem of the ship i.e. EMALS reliability is no longer merely regarding the catapult track itself, but also the condition of supporting subsystems, spares pipelines, the skills of the technicians, and the ship itself being able to diagnose issues at sea swiftly.
The second point of pressure is that EMALS reliability has become a fleet issue and not a ship issue any longer. The Navy is concurrently juggling the facts of carrier availability, maintenance backlog and workforce needed to maintain complex electro-mechanical systems as the future USS John F. Kennedy proceeds on the Builder’s Sea Trials and acceptance milestones. According to the USNI News, there have been delays with integrating and certifying new systems such as AAG and advanced weapons elevators with Kennedy scheduled to be delivered in March 2027.
EMALS has been constructed to ensure that the carrier becomes more relevant during its long life in service. Maintaining it consistently at operational rate is the closer-term engineering challenge that establishes whether the Ford-type can process in a steady stream the sortie generation it was designed to.
