Award Data

A system to provide either continuous 15 kW cooling at -15 C or 100 kW cooling at 20 C is described that is very simple in terms of using only light weight micro channel heat exchangers, two constant speeed pumps (one of which is working at any moment) and some control valves. The system does not utilize a refrigerant, nor a power-consuming compressor, and the need for thermal capacitance such a ...

The goal of this project is to demonstrate a recuperator with extremely high effectiveness for use in a reverse turbo-Brayton (RTB) cryocooler. The recuperator will offer substantial system weight reduction, volume reduction, and performance increases for a cryocooler that can be used for Block 12 as well as any other space-based cryocooling needs. Advanced micro-manufacturing technology is need ...

Trusted Data Solutions proposes to demonstrate the benefits of establishing a manufacturing readiness system to create an intelligent, electronic factory for use throughout a product's lifecycle. In a manufacturing readiness system, relationships among products, processes, and resources are associative; "what-if" scenarios can be quickly played out within the electronic factory to determine impac ...

The goal of this program is to develop manufacturing technologies/methods that will allow for the fabrication of advanced regenerators made from erbium-based, intermetallic compounds for application in space-based cryocoolers. These regenerators, when used as a replacement for Pb-powder regenerators, will result in an increase in efficiency of cryocoolers by a factor of 3-4. When used as a repla ...

A conterflow heat exchanger operating between 6 and 70 K will be fabricated to transfer approximately 70 W between counterflowing streams of helium with an effectiveness exceeding 99.6%. The pressures of the two helium streams will be 1.4 and 1.0 atmospheres. Design specifications for the heat exchanger are as follows: i) Will sustain 30 g acceleration in any axis ii) Burst pressure of ...

The goal of this proposal is to fabricate highly efficient regenerators using LIGA-based micromachining techniques. Specifically, sheets having a thickness of around 1.0 millimeter will be fabricated from lead or another material with high heat capacityat cryogenic temperatures. Each sheet will contain very small diameter holes (less than 50 micrometers in diameter), with a hole density that pro ...

This is a proposal for developing a novel boiling system to remove heat fluxes of up to 1kW/cm2, using an array of impinging micro-jets. The use of an array of micro-jets with diameters in the range of 200-500 microns, allows for removal of large heatfluxes at coolant flow rates, which can be up to one order of magnitude less than the coolant requirement for conventional-size (diameter of order o ...

"This proposal considers the potential of direct casting of micro channel cryocooler regenerators. Currently, cryocoolers use regenereators made of packed spheres, which decrease the efficiency of the regenerator and, of course, the cryocooler itself.This is an important issue when considering placing cryocoolers on satellites and the cryocooler itself utilized almost half of the power supply. T ...

The goal of this project is to build an extremely efficient, light weight, low cost metal cross flow heat exchanger. The heat exchanger will be fabricated using a derivative of the LIGA manufacturing process that has been developed at Louisiana StateUniversity over the last five years. It is specifically designed for transfer between a gas and a liquid where pumping losses of the two fluids nee ...

THE PROBLEM ADDRESSED IS THAT OF EXTRACTING INFORMATION ABOUT EVENTS ASSOCIATED WITH A PHYSICAL SYSTEM BY PROCESSING A LARGE NUMBER OF DATA STREAMS FLOWING FROM SENSORS AND INSTRUMENTATION. IT IS ASSUMED THAT DECEPTIVE DATA PORTIONS ARE IMBEDDED, WITH NO A-PRIORI MODELS DESCRIBING SYSTEM BEHAVIOR. THE OBJECTIVE IS TO FORMALIZE, ARTICULATE, AND DEMONSTRATE A SIGNAL-PROCESSING FRAMEWORK (OBJECT OREI ...