Award Data

We propose to develop and deliver a compact, high pulse repetition rate, mid-infrared optical parametric oscillator wavelength converter and cw fiber coupled diode pumped, Q-switched, Nd:YV04 diode pumped laser. A new nonlinear material, periodic poled Lithium Niobate (PPLN) enables an OPO to efficiently convert low energy pulses (150 microjoules) into the mid-infrared wavelengths. By changing t ...

With new detectors capable of sensing 7.5 - 9 micron wavelengths, a future threat is emerging since these detectors can be used in seekers. The need is to counter this threat with a laser source operating at 7.5 - 9 microns. The source requirements are 5 - 10 Watts of average power and a repetition rate of > 10 kHz. The proposed laser source is a Nd:YAG-pumped tandem OPO system consisting o ...

For future long-range theater ballistic missile defense, aircraft-mounted LADAR systems require eyesafe laser transmitters that produce higher pulse energy and better beam quality than currently available optical parametric oscillators (OPOs) pumped by diode-pumped Nd:YAG lasers. Aculight proposes a novel laser transmitter approach that can simultaneously generate the required pulse energy, b ...

Precision strike weapons have been proved repeatedly to be able to provide substantial tactical advantages. Much attention in the past has been focused on improving the strike position accuracy. To penetrate a consolidated hard target, however, the missile velocity and impact angle also plays a significant role. This raises the requirement for the capability to precisely control the missile att ...

The proposed project will provide state-of-the-art computational tools for comprehensive simulation of a jettisoned aircraft canopy during an emergency egress. The proposed methodology uses an existing CFD code for detailed aerodynamic analysis of the canopy near and away form the aircraft. From the CFD analysis, aerodynamic coeeficient tables will be generated to be used in the Navy 6D0F trajec ...

A CFD methodology is proposed, based on the grid oversetting approach, that will assess both control fin gap effects and the presence of the actuator post. The chimera method is technically mature and perfectly suited to the ultimate goal of au During Phase I, the proposed approach will be demonstrated for a fin configuration to be chosen in consultation with NAWC and Hughes Missile Systems, a ...

An automated viscous Cartesian grid generation method will be developed in this SBIR project to handle complex geometries. Given a well-defined geometry (e.g. in NURBS format), an advancing front (AF) algorithm will be employed to triangulate In Phase I, the above methodology will be implemented and demonstrated for relatively simple 3D geometries, such as a wing and a wing/fuselage combinat ...

A new concept for high speed brushless motors and generators, called a flux-reversal machine (FRM), has been conceived and demonstrated as a proof-of-principle generator. The FRM offers many advantages relative to other machines in its class. These include simple and robust construction, no magnets or coils on the rotor that can have a smooth cylindrical OD, low cost mass production potential, h ...

Wavelets are the topic of much excitement in mathematics, engineering, and scientific circles, particularly in the field of data compression. We propose to develop a suite of advanced wavelet compression algorithms especially designed for low frequency acoustic and transient signals. These algorithms will incorporate the latest wavelet transforms, including wavelet packets and cosine packets. The ...

The Navy has unprecedented capabilities for gathering sensory information through platforms such as autonomous vehicles. This information is exploited for a variety of purposes, including rapid retargeting, situational awareness, and surveillance. A critical need facing the Navy is software for automated browsing and processing of sensory data in order to make faster and more accurate decisi ...