NASA SBIR abstracts of 1990 phase 1 projects

The research objectives of the 280 projects placed under contract in the National Aeronautics and Space Administration (NASA) 1990 Small Business Innovation Research (SBIR) Phase 1 program are described. The basic document consists of edited, non-proprietary abstracts of the winning proposals submitted by small businesses in response to NASA's 1990 SBIR Phase 1 Program Solicitation. The abstracts are presented under the 15 technical topics within which Phase 1 proposals were solicited. Each project was assigned a sequential identifying number from 001 to 280, in order of its appearance in the body of the report. The document also includes Appendixes to provide additional information about the SBIR program and permit cross-reference in the 1990 Phase 1 projects by company name, location by state, principal investigator, NASA field center responsible for management of each project, and NASA contract number

Aerosol measurement and mitigation in CO₂ capture by amine scrubbing

Amine solvent losses are a significant issue for CO₂ capture by amine scrubbing. Solvent lost through aerosol emission represents an environmental hazard with adverse economic implications. This research focuses on developing analytical systems to quantify amine aerosol emissions. Fourier Transform Infrared Spectrometry quantified amine emissions and Phase Doppler Interferometry determined aerosol size and concentration. Baghouse pretreatment of the flue gas significantly reduced amine emissions through collection of aerosol nuclei. A baghouse at the National Carbon Capture Center (NCCC) reduced monoethanolamine (MEA) emission by over a factor of 10. An SO₃ generator was built to facilitate bench and pilot scale aerosol experiments by reacting SO₂ in air over vanadium pentoxide catalyst at 520 °C. Aerosol generation at UT-SRP produced up to 1.7 grams per minute of SO₃, with conversion exceeding 81 %. Bench scale experiments achieved conversion greater than 97 % and aerosol concentration up to 7E4 cm⁻³. SO₃ increased piperazine (PZ) emission by up to 7.6 mol PZ/ mol SO₃. SO₂ increased PZ emission by 1 mol/ mol SO₂, and increased MEA emissions by 3.9 mol/ mol SO₂. H₂SO₄ increased PZ emission by 3 mol/ mol H₂SO₄. PZ resisted aerosol emissions with lower SO₃ content; this is because a low inlet aerosol nuclei concentration results in rapid aerosol growth and subsequent collection by impaction. Higher process temperatures correlated with decreasing PZ emission, supporting the growth and capture theory. Increasing the solvent PZ content was shown to strongly correlate with increasing PZ emission. In bench scale experiments, PZ emission and aerosol size both increased as the PZ content in the solvent increased. Lowering the temperature bulge stage reduced PZ emission and the aerosol size. Increasing the inlet CO₂ correlated with larger aerosol. Increasing the solvent CO₂ loading and the inlet SO₃ resulted in greater aerosol concentration. Operations with a blower upstream of the absorber increased MEA aerosol emission. The upstream blower resulted in larger aerosol in greater quantities, containing a greater quantity of MEA Reduced MEA emission with an intermediate blower are probably due to collection of aerosol through impaction within the blower.Chemical Engineerin

Applications of MATLAB in Science and Engineering

The book consists of 24 chapters illustrating a wide range of areas where MATLAB tools are applied. These areas include mathematics, physics, chemistry and chemical engineering, mechanical engineering, biological (molecular biology) and medical sciences, communication and control systems, digital signal, image and video processing, system modeling and simulation. Many interesting problems have been included throughout the book, and its contents will be beneficial for students and professionals in wide areas of interest

Publications of the Jet Propulsion Laboratory, 1979

This bibliography includes 1004 technical reports, released during calendar year 1979, that resulted from scientific and engineering work performed, or managed, by the Jet Propulsion Laboratory. Three classes of publications are included: (1) JPL Publications; (2) articles published in the open literature; and (3) articles from the bimonthly Deep Space Network Progress Report. The publications are indexed by: (1) author, (2) subject, and (3) publication type and number. A descriptive entry appears under the name of each author of each publication; an abstract is included with the entry for the primary (first listed) author. Unless designated otherwise, all publications listed are unclassified

Modelling, Simulation and Data Analysis in Acoustical Problems

Modelling and simulation in acoustics is currently gaining importance. In fact, with the development and improvement of innovative computational techniques and with the growing need for predictive models, an impressive boost has been observed in several research and application areas, such as noise control, indoor acoustics, and industrial applications. This led us to the proposal of a special issue about “Modelling, Simulation and Data Analysis in Acoustical Problems”, as we believe in the importance of these topics in modern acoustics’ studies. In total, 81 papers were submitted and 33 of them were published, with an acceptance rate of 37.5%. According to the number of papers submitted, it can be affirmed that this is a trending topic in the scientific and academic community and this special issue will try to provide a future reference for the research that will be developed in coming years

NASA Tech Briefs, August 1991

Topics: New Product Ideas; NASA TU Services; Electronic Components and Circuits; Electronic Systems; Physical Sciences; Materials; Computer Programs; Mechanics; Machinery; Fabrication Technology; Mathematics and Information Sciences; Life Sciences

The Deep Space Network

The various systems and subsystems are discussed for the Deep Space Network (DSN). A description of the DSN is presented along with mission support, program planning, facility engineering, implementation and operations