Award Data

The nuclear weapons community has traditionally focused on the next generation or level of weapon capability complimented by gathering and analysis of actual test data. Now, with the cessation of actual weapons testing, there is an increased need to use the actual test data in modeling techniques to better understand the phenomenology and potential effects of nuclear weapons. The first phase of ...

Recent efforts in the target vulnerability community (fixed ground targets, mobile ground targets, and aircraft) have focused on enhancing the blast and fragmentation modeling from weapon detonations. This includes modeling propagation of the detonation effects from the weapon through their interaction with the target geometry, to the development of loads on and response of the target structure. ...

Warhead design calculations and weapons effectiveness estimates require a methodology to predict structural response and the associated damage to air targets from reactive munitions. The objectives for the proposed Phase I study effort are to develop candidate launch conditioning, reaction initiation and reaction rate methodology, to incorporate existing ballistic, blast and quasi-static pres ...

Turbulence of gas flows by its very nature is one of the most difficult things to model and measure. We propose to develop a new way of measuring the turbulence and to compare these measurements to predictions using the k-epsilon model. Typical measurements, in the past, use smoke, Schlierin or shadow graph techniques to visually infer turbulence characteristics. These features are either motio ...

The objective of this work is to develop analytical techniques to characterize wear and gouging phenomena of slippers at speeds up to hypersonic and demonstrate means to evaluate or reduce slipper wear/gouging. Specifically, we will develop analytical techniques that can be used to predict slipper wear patterns and gouging phenomena throughout the sled velocity regime to Mach 10. This will inclu ...

It has been proven, for gas turbines, that brush seals exhibit substantially lower leakage in close clearance areas than conventional labyrinth seals. Direct efficiency gains from reducing seal leakage losses in turbopumps with brush seals potentially amounts to several percent of the total pump power consumption. As such, the case for transitioning brush seals to rocket turbopumps is compelling ...

High Pressure Compressor (HPC) pressure ratios of up to 40:1 are required to achieve 100:1 cycle pressure ratios. A multi-stage axial HPC configuration will be too long and heavy and too inefficient in later stages (at these higher pressure ratios). Increased tip clearance to span ratio will also lead to low efficiency and surge margin for the axial HPC. The innovations of the proposed work inc ...

Low cost compact diffusers are needed for small gas turbine compressor stages to economically minimize centrifugal compressor overall diameter yet permit high efficiency and wide operating range. The proposer has performed over 130 different detailed tests (on more than 40 different stage configurations) with various conventional and novel diffusers (vaneless, low solidity airfoil, channel, tande ...

High cycle fatigue of turbine engines is of vital concern to the Navy. The proposed project applies an innovative measurement system for blade vibration to an engine health monitoring (EHM) system for monitoring and avoiding HCF damage in turbine engine fans and compressors. Although technical feasibility of the instrumentation system was shown under a prior Phase I Army SBIR, operational f ...

A need to control the fugitive emissions of hazardous vapors, volatile organic compounds (VOCs) and hazardous air pollutants (HAPs) has been identified in operations at Army plants and depots. The High Mesa Technologies (HMT)/Coyote Aerospace team proposes to meet this need using proven silent discharge plasma (SDP) techniques, developed by the Electric Power Research Institute and Los Alamos Nat ...