THIS PROPOSAL CLEARLY AIMS TO ADDRESS TWO SIGNIFICANT NEEDS WHEN IT COMES TO CHARACTERIZING THE DYNAMIC STABILITY OF ATMOSPHERIC ENTRY CAPSULE THROUGH COMPUTATIONAL FLUID DYNAMICS (CFD) SIMULATIONS.
EXECUTE A BALANCED SCIENCE PROGRAM BASED ON DISCIPLINE-SPECIFIC GUIDANCE FROM THE NATIONAL ACADEMIES OF SCIENCES, ENGINEERING, AND MEDICINE, ADMINISTRATION PRIORITIES, AND DIRECTION FROM CONGRESS. PARTICIPATE AS A KEY PARTNER AND ENABLER IN THE AGE
THIS CONTRACT IS IN ACCORDANCE WITH BROAD AGENCY ANNOUNCEMENT FOR THE GSL UNDER TOPIC MATERIALS TITLED THAMES MODELING OF HYDRATION AND MICROSTRUCTURE DEVELOPMENT OF BLENDED CEMENTITIOUS BINDERS UNDER ARBITRARY MOISTURE CONDITIONS.
NSTGRO IS A FELLOWSHIP OPPORTUNITY FOCUSED ON GRADUATE STUDENT RESEARCH AND DEVELOPMENT OF ADVANCED AND INNOVATIVE SPACE TECHNOLOGIES CRITICAL FOR OUR NATION TO MEET ITS GOALS TO EXPLORE AND UNDERSTAND THE EARTH, OUR SOLAR SYSTEM, AND THE UNIVERSE.
FOCUS ON 18 PYROLYSIS OF CARBON FIBER AND PHENOLIC COMPOSITES USING ELECTRICAL HEATING AND WILL 19 CHARACTERIZE THE MATERIAL PROPERTIES AND INVESTIGATE THE APPLICATION OF ELECTRICAL HEATING 20 FOR THE MANUFACTURING OF LARGE-SCALE COMPOSITES.
TO CONDUCT ADVANCED TECHNOLOGY DEVELOPMENT RESEARCH, PRIMARILY IN HYPERSONICS. STRATEGIC HYPERSONIC WEAPON SYSTEMS EXPERIENCE INCREASED MATERIAL DEGRADATION WHEN EXPOSED TO ADVERSE ATMOSPHERIC WEATHER CONDITIONS, WHICH THREATENS MISSION PERFORMANCE.
SERDP PROJECT ER24-4382 "DECIPHERING THE ROLE OF MICROBIAL BIOFILMS AND BIOSURFACTANTS IN PFAS SORPTION AND DESORPTION IN NATURAL ENVIRONMENTS" TO DETERMINE THE EXTENT TO WHICH BIOFILMS AND BIOSURFACTANTS MAY IMPACT PROCESSES THAT CONTROL PFAS.
EXPOSURE TO WEIGHTLESSNESS RESULTS IN THE REMOVAL OF HYDROSTATIC PRESSURE GRADIENTS AND A HEADWARD FLUID SHIFT. THIS HAS CURRENTLY UNKNOWN CONSEQUENCES, BUT IT HAS BEEN HYPOTHESIZED TO CONTRIBUTE TO A SERIES OF NEURO-OCULAR STRUCTURAL AND FUNCTIONAL CHANGES OCCURRING DURING SPACEFLIGHT, COLLECTIVELY KNOWN AS SPACEFLIGHT ASSOCIATED NEURO-OCULAR SYNDROME (SANS). ADDITIONALLY, RECENTLY DEMONSTRATED STAGNANT AND RETROGRADE BLOOD FLOW AND VENOUS THROMBOSIS IN THE LEFT INTERNAL JUGULAR VEIN (IJV) DURING SPACEFLIGHT COULD ALSO BE ASSOCIATED WITH SUSTAINED HEADWARD FLUID SHIFT AND REMOVAL OF HYDROSTATIC GRADIENTS. THUS, COUNTERMEASURES FOCUSED ON REVERSING THE HEADWARD FLUID SHIFT, SUCH AS LOWER BODY NEGATIVE PRESSURE (LBNP), BECOME PARTICULARLY RELEVANT. PREVIOUS STUDIES ON THE GROUND (I.E., EARTH CONDITIONS, MOSTLY IN SUPINE POSITION OR 6 HEAD-DOWN TILT) INVESTIGATING THE EFFECTS OF LBNP HAVE SHOWN PROMISING RESULTS. HOWEVER, THERE ARE FUNDAMENTAL DIFFERENCES IN PHYSIOLOGICAL RESPONSES BETWEEN EARTH AND MICROGRAVITY CONDITIONS (E.G., PRESENCE/ABSENCE OF FRONT-TO-BACK, OR GX, ACCELERATION). THUS, GROUND RESULTS MIGHT NOT BE DIRECTLY EXTRAPOLATED TO TRUE MICROGRAVITY CONDITIONS. THE OBJECTIVE OF THIS ANALOG-BASED RESEARCH EFFORT IS TO GENERATE ACUTE DOSE-RESPONSE CURVES OF A LARGE SET OF CARDIOVASCULAR, AUTONOMIC, CEPHALAD, AND OCULAR MEASURES AS A FUNCTION OF LBNP LEVEL DURING TRUE MICROGRAVITY CONDITIONS USING PARABOLIC FLIGHT.