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Structural Analysis Method for Aeronautical Modifications in the Integration of Electro-Optical Systems in Helicopters for the Implementation of Intelligence, Surveillance and Reconnaissance (ISR) Capability

Abstract:

Persistent surveillance and collection of airborne intelligence, surveillance and reconnaissance (ISR) information is critical in today’s warfare against terrorism. High resolution imagery in visible and infrared bands provides valuable detection capabilities based on target shapes and temperatures. The design of the installation of the Wescam MX-15i electro-optical (EO) system in helicopter Bell 430, must structurally adapt turret MX-15i system, allowing the operation of the aircraft and system in all capacities. The technical characteristics of the Bell 430 helicopter and the MX-15i EO system are analyzed, in addition to determining alternatives for the location of the system turret, a methodology is established for evaluating dimensional, operational, integration and security aspects; Each aspect is analyzed and it is established that the most suitable location is on the right side of the helicopter at the height of the aircraft floor. An aerodynamic analysis of the installation is carried out establishing the preliminary geometry to be modeled, then the aerodynamic loads to which the installation is exposed are determined using software, and the translational and rotational loads to which the installation is subjected are analyzed. Structural design is presented for the installation of the turret on the aircraft, this design allows disassembly of the system if required for other types of helicopter operation. Design verification subjected to loads takes efforts and displacements, deformations and the safety factor is derived structural installation. It also performs frequency analysis then be compared with the frequency exciters, a fatigue analysis shows structural stability and long life of the installation.