NEW DELHI : The Indian Navy’s decision to procure 26 carrier-borne Rafale M fighter aircraft required a detailed technical assessment of compatibility with existing aircraft carrier infrastructure before the contract was finalized. The evaluation focused primarily on dimensional constraints associated with aircraft elevators aboard India’s Short Take-Off But Arrested Recovery (STOBAR) carriers, INS Vikrant and INS Vikramaditya.
Unlike the Russian-origin MiG-29K currently operated by the Navy or the American F/A-18 Super Hornet evaluated during trials, the French-built Rafale M does not incorporate a folding-wing mechanism. This structural characteristic created a dimensional challenge, as the carriers’ elevators were originally optimized around aircraft with reduced folded wingspans.
Dimensional Assessment and Carrier Constraints
The compatibility issue centered on the relationship between the Rafale M’s physical dimensions and the elevator platform sizes on both carriers.
The Rafale M has an overall length of 15.30 meters and a height of 5.30 meters. Its baseline wingspan measures 10.90 meters when fitted with wingtip missile launch rails.
In comparison, INS Vikrant is equipped with two deck-edge elevators, each measuring 10 meters in width and 16.5 meters in length. INS Vikramaditya operates a center-deck elevator with an approximate width of 9.9 meters.
Because the Rafale M’s standard wingspan of 10.90 meters exceeds the 10-meter width of INS Vikrant’s elevators—and is wider than the 9.9-meter platform on INS Vikramaditya—a direct, straight-on transfer between the flight deck and the hangar deck was not feasible without modification.
The carriers were originally configured around the MiG-29K, which features folding wings that reduce its span to approximately 7.9 meters when stowed. The absence of a folding mechanism on the Rafale M therefore required a procedural or mechanical workaround rather than structural alterations to the ships.
Shore-Based Validation at SBTF Goa
To resolve the issue prior to procurement clearance, the Indian Navy, in coordination with Dassault Aviation, conducted detailed trials at the Shore Based Test Facility (SBTF) in Goa. These evaluations were designed to simulate carrier operating conditions and validate deck handling, launch, recovery, and movement procedures.
During these trials, the Navy confirmed that the Rafale M could be accommodated within existing elevator dimensions through adjustments to its external configuration, eliminating the need for modifications to carrier steel structures.
Primary Technical Solution: Wingtip Rail Removal
Although the Rafale M’s wings are fixed and non-folding, its wingtip pylons—used to mount MICA air-to-air missiles—are detachable components.
The dimensional adjustments were assessed as follows:
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Baseline configuration with wingtip rails installed: 10.90 meters wingspan
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With missiles removed but rails retained: 10.21 meters wingspan
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With wingtip missile launch rails physically detached: approximately 9.6 meters wingspan
At 9.6 meters, the aircraft can clear a 10-meter-wide elevator with roughly 40 centimeters of total clearance, providing a workable safety margin for controlled movement.
Under the validated procedure, aviation armorers would detach the wingtip launch rails prior to lowering the aircraft into the hangar deck. The rails would then be reattached on the flight deck before operational deployment. While this introduces an additional handling step within the sortie preparation cycle, naval planners assessed it as an operationally manageable adjustment.
Importantly, the Navy determined that this approach avoided structural modification to either INS Vikrant or INS Vikramaditya, preserving ship integrity and preventing cost-intensive redesign.
Operational Employment and Hangar Utilization Strategy
To minimize the frequency of elevator transfers requiring rail removal, the Indian Navy is expected to implement a topside parking strategy for Rafale M operations at sea.
Under this approach, the majority of deployed single-seat Rafale M aircraft will remain secured and parked on the flight deck during active carrier operations. Elevator use and hangar storage will be reserved primarily for:
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Aircraft undergoing deep maintenance
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Engine replacement or significant servicing
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Protection during severe weather conditions
This operational model reduces repeated configuration changes and streamlines deck cycle management.
Procurement Context
The dimensional compatibility solution formed a critical part of the technical validation process preceding the Navy’s decision to proceed with procurement of 26 Rafale M aircraft. By confirming that the fighter could be safely integrated into existing STOBAR carriers without structural alteration, the Navy eliminated a key logistical constraint prior to finalizing the order.
The outcome reflects a procedural adaptation rather than a redesign of naval infrastructure, ensuring compatibility within current carrier architecture while maintaining operational flexibility for future deployments.
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