Abstract: A dual-stream nozzle configuration was studied numerically with the objective of predicting the appearance of…
Author: New NASA STI
Core/Combustor-Noise Baseline Measurements for the DGEN Aeropropulsion Research Turbofan
Abstract: Contributions from the combustor to the overall propulsion noise of civilian transport aircraft are starting…
Two-Speed Rotorcraft Research Transmission Power-Loss Associated with the Lubrication and Hydraulic Rotating Feed-Through Design Feature
Abstract: An investigation was completed into the power loss associated with a rotating feed-through (RFT) design…
Polarization Decomposition and Temperature Bias Resolution for SMAP Passive Soil Moisture Retrieval Using Time Series Brightness Temperature Observations [STUB]
Abstract: In passive microwave remote sensing of soil moisture, the tau-omega (t-?) model has often been…
Narrowband Propagation Statistics of Aeronautical Mobile-Ground Links in the L- and C-Bands
Abstract: To provide for the safe integration of unmanned aircraft systems (UAS) into the National Airspace…
Determination of Best Low-Frequency Microwave Antenna Approach for Future High Resolution Measurements from Space [STUB]
Abstract: Microwave remote sensing measurements at L-band (~1.2-1.6 GHz) of geophysical parameters such as soil moisture…
Physics-Based Retrieval of Surface Roughness Parameters for Bare Soils from Combined Active-Passive Microwave Signatures [STUB]
Abstract: In the past the effect of soil roughness was often considered secondary within the determination…
Two-Dimensional Modal Beamforming in Wavenumber Space for Duct Acoustics
Abstract: As turbofan bypass ratio continues to increase, civilian aircraft noise is increasingly dominated by fan…
PIV and Rotational Raman-Based Temperature Measurements for CFD Validation in a Single Injector Cooling Flow
Abstract: Film cooling is used in a wide variety of engineering applications for protection of surfaces…
Recycling and Sustainable Acquisition Workshop
Abstract: Recycling Program: Overview; C & D Solid Waste Diversion: Concrete; Composting Process; Composting Program; Program…