Sample acquisition and in-situ analysis using the Ultrasonic/Sonic Driller/Corer (USDC) and robotic platforms
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piezoelectrics actuators drill ultrasonic drill↗
Engineering topics
Pal, D.
Publications and source records attributed to Pal, D..
Ultrasonic/Sonic Driller/Corer (USDC) as a sampler for future planetary exploration missions
Future NASA exploration missions to Mars, Europa, Titan, comets and asteroids are seeking to perform sampling, in-situ analysis and possibly return of material to Earth for further tests. One of the major limitations of sampling in low gravity environments is the conventional sampling in low gravity environments is the conventional drills need for high axial force. An ultrasonic/sonic driller/corer (USDC) mechanism was developed to address these and other limitations of existing drilling techniques.
Piezoelectrics actuators drill ultrasonic drill↗
Ultrasonic/sonic driller/corer (USDC) as a sampler for future planetary exploration missions
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pump piezoelectrics actuators↗
Ultrasonic/Sonic Drilling/Coring (USDC) for in-situ Planetary Applications
A novel ultrasonic drilling and coring device (USDC) was demonstrated to drill a wide variety of rocks: from ice and chalk to granite and basalt.
drilling↗
Modeling of Horns for Sonic/Ultrasonic Applications
JPL has a requirement for telerobotic tools for planetary sample acquisition, which require low power and have the ability to work in harsh environments.
Ultrasonic↗
The Ne-21 production rate in stony meteorites estimated from Be-10 and other radionuclides
The Be-10 contents of 28 stony meteorites with known Ne-21 contents range from 0.97 to 23 dpm/kg and give an average Ne-21 production rate (P sub 21) of (0.28 + or - 0.02) x 10 to the -8th cu cm STP/g-My for shielding conditions corresponding to Ne-22/Ne-21 = 1.114 in an H-chondrite. This P sub 21 (Be) agrees with others' P sub 21 based on Na-22, Kr-81, and Mn-53, but not an Al-26. Temporal variations in the cosmic ray flux do not explain the disagreement satisfactorily; major errors in the radionuclide half-lives are not indicated. The discrepancy seems rooted in the data selection and the difficulties of making accurate corrections for shielding, chemical composition and other sources of variability.
Moniot, R. K.↗