The Influence of Operational Requirements on LHX Concept Formulation,
ARMY AVIATION SYSTEMS COMMAND ST LOUIS MO
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This paper addresses the U.S. Armys Light Helicopter Family LHX helicopter program which id with concept formulation including governing regulations, how the process is executed, the scope of effort involved and innovations included for LHX. The evolution of the requirements is emphasized and the focus of the paper is on how operational requirements drive engineering requirements and ultimately the design of the aircraft. Operational requirements are driven by the LHX concept, namely, a family of ScoutAttack LHX-SCAT and Utility LHX-U aircraft with common dynamic components, core mission equipment and common subsystems. The impacts of the unique LHX-SCAT aircraft on the design and commonality with the LHX-U are discussed. The operational requirements are categorized into those associated with the Army 21 concept of the future battlefield, the threat, safety and Reliability, Availability and Maintainability RAM. Each category results in several specific design impacts. The synergistic effect of these design impacts creates a very challenging task when combined with real world cost, weight and size goals for the LHX. NATO.