Award Data

The traditional view of arithmetic operations dominating the computational cost of numerical algorithms has changed. As performance of new processors increases, we are moving into a new reality in which data movement is expensive and operations are becoming nearly free. In Phase I we discovered a new theory of data compression with unprecedented capability to reduce data movement in distributed HP ...

N/A

The proposed Phase II investigation will focus on the development of spacecraft systems required to obtain a sample from the nucleus of a comet, hermetically seal the sample within a capsule, and return the sealed sample to an orbiting spacecraft which can return the sample to Earth. A systems level concept for the Comet Surface Sample Return Probe has been developed in Phase I. This concept will ...

SATELLITE AND SUPPORTING IN-SITU OBSERVATIONS OF PRECIPITATION PARAMETERS ARE CRITICALLY NEEDED TO SATISFY GLOBAL-SCALE CLIMATE MONITORING REQUIREMENTS. THE MAJOR SOURCE OF DATA WILL BE ESTIMATES OF RAINFALL AMOUNT DERIVED FROM THRESHOLD IR HISTOGRAMS OF GEOSTATIONARY SATELLITE OBSERVATIONS. SINCE THESE ARE SPACE-BASED INDIRECT MEASUREMENTS, IT WILL BE NECESSARY TO ASSESS THE VALIDITY OF THESE EST ...

Eye safe 3D Imaging LIDARS when combined with advanced very high sensitivity, large format receivers can provide a robust wide area search capability in a very compact package. This search LIDAR concept, when deployed on UAS, can provide target detection, tracking and identification of sufficient quality to enable search and avoid actions when other air traffic flies near UAS platforms in the Nat ...

Newer vertical lift configurations consider speed as an important design parameter with forward speeds upwards of 230 Knots, which is well above the acceptable incompressible flow regime. In such high speed vertical lift configurations, even though the aircraft may be cruising at compressible Mach numbers, incompressible flow pockets can occur in the wake of the fuselage. Hence, in contrast to mos ...

LIQUID PROPELLANT ATOMIZATION PLAYS A DOMINANT ROLE IN STABLE AND EFFICIENT OPERATION OF ROCKET THRUST CHAMBERS. DESPITE THE RECENT PROGRESS IN COMPUTATIONAL FLUID DYNAMICS (CFD) AND SPRAY COMBUSTION MODELLING TECHNIQUES, NOSATISFACTORY APPROACH HAS YET BEEN DEVELOPED FOR PROPELLANT ATOMIZATION MODELLING. THE MAJOR INNOVATIVE ELEMENT OF THIS PROPOSAL IS TO PREDICT THE DROPLET BREAKUP RATE AND AVER ...

THE INNOVATION TO BE DVELOPED IS A PROTOTYPE DISTRIBUTED CONCEPT ORIENTED EXPERT SYSTEM FOR APPLICATION TO SPACECRAFT ANALYSIS MONITORING AND CONTROL. SYSTEM FUNCTIONS WILL BE PERFORMED BY SEMI-AUTONOMOUS EXPERT MODULES WORKING TOGETHER UNDER THE COORDINATION AND CONTROL OF A SUPERVISORYEXPERT . CONCEPT ORIENTED REPRESENTATIONS OF BOTH KNOWLEDGE BASE AND LOGICAL PROCESSES WILL BE EMPLOYED THROUGHO ...

We propose to demonstrate a fully automatic capability for generating a global, high resolution (30 m) land classification map, with continuous updates from satellite imagery and crowdsourced ground truth, and an annual publication cycle. The resulting map will be fully extensible, supporting many layers including Anderson type land cover categories, specific crop types in agricultural areas, and ...

HIGH INTENSITY ACOUSTIC NOISE GENERATORS ARE REQUIRED BY NASA TO IRRADIATE ADVANCED AIRCRAFT COMPONENT STRUCTURES ANDMATERIALS AT ELEVATED TEMPERATURES AND NOISE LEVELS UP TO 190 DB. PRESENTLY THE NOISE GENERATORS USED BY NASA AT THEIR LANGLEY ACOUSTIC RESEARCH FACILITY OPERATE AT LOW TEMPERATURES (70 DEGREES FAHRENHEIT) AT NOISE LEVELS UP TO 168 DB. CURRENTLY THESE GENERATORS ARE ELECTRO-MECHANIC ...