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Aculight proposes the development of a frequency tunable source suitable for LADAR measurements from compact military platforms. The source will use a fixed frequency diode pumped solid state drive laser and an optical parametric oscillator, tunable from 1.6 to 2.4 microns. Output energies will be over 100 micro-J through the spectral range at pulse rates of 10kHz. The major technical challenge, ...

High pulse energy, high repetition rate, tunable, narrowband sources are needed for optical pumping of mid-infrared gas laser converters. The source needs continuous tunability over the 1-3 micron band to access different overtone bands in various gaseous gain media. Due to the need for diode pumping of the source, efficiency is critical to minimizing diode costs. Our approach is efficient gene ...

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A Cartesian, multigrid, Euler solver is investigated for development as a module suitable for the multidisciplinary design optimization (MDO) environment. The ultimate objective is not to improve the Euler solver (it is already a mature code) but rather to augment or replace the linear panel method flow solvers used in the Automated Structural Optimization System (ASTROS) for the purpose of airfr ...

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A study will be conducted to develop actively-cooled structural concepts for high heat transfer engine inlet regions of scramjet engines. The program is directed toward the HyTech missile system and employs laminated foil microchannel cooling technology. The program will consist of four basic tasks: (1) definition of design requirements; (2) design trade studies to develop the optimum ...

Oxygen sensitive luminescent coatings have been used for simultaneous 2 dimensional pressure measurements on aerodynamic bodies in wind tunnels. The use of these Pressure Sensitive Paint (PSP) systems has enabled visualization of previously unseen flow phenomena. Current PSP measurements are limited by temporal resolutions on the order of seconds. The design of a PSP system capable of making pr ...

Current IR systems are extremely susceptible to electromagnetic and radio frequency interference (EMI/RFI) because they possess large apertures that present ideal front-door entry paths for EM radiation. Significant amounts of EM radiation (400 MHz - 18 GHz) can penetrate and couple to the IR sensor and supporting electronics, which leads to a substantial degradation in systems performance. EMI ...

A one degree of freedom high-frequency aerodynamic bearing-balance will be developed for force, moment, and orientation measurements under non-steady-state flight conditions. A cylindrical bearing-balance three inches in diameter using displacement sensing will be considered as the best candidate for the design. To satisfy the requirement for achieving a natural frequency of 800Hz, the balance m ...