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Micro-particle Image Velocimetry for Velocity Profile Measurements of Micro Blood Flows
Published on: April 25, 2013
Plasma flow and fast particles in a hypervelocity accelerator: a color presentation.
Applied Optics
|February 16, 2010
Summary
NASA scientists developed a novel plasma flow method to accelerate glass beads for micrometeoroid simulation. This technique achieves hypervelocity impacts, crucial for testing spacecraft resilience against space debris.
Area of Science:
- Space Science and Engineering
- Plasma Physics
- Materials Science
Background:
- Micrometeoroid impacts pose a significant risk to spacecraft.
- Accurate simulation of hypervelocity impacts is essential for designing resilient spacecraft.
- Existing acceleration methods may have limitations in achieving required velocities and particle sizes.
Purpose of the Study:
- To introduce a new concept for particle acceleration at NASA Marshall Space Flight Center.
- To utilize a high-density self-luminescent fast plasma flow for accelerating glass beads.
- To achieve velocities between 15-20 km/sec for micrometeoroid simulation.
Main Methods:
- Development of a novel particle acceleration concept using plasma flow.
- Acceleration of glass beads (up to 1.0 mm diameter) to hypervelocities.
- Utilizing an eight-converter-camera unit with a pyramidal beam splitter for photographic analysis.
- Employing Wratten filters and black and white film for image capture.
- Application of dye-color process for producing final prints from photographic data.
Main Results:
- Successful acceleration of glass beads to velocities of 15-20 km/sec.
- Demonstration of a high-density self-luminescent fast plasma flow for particle acceleration.
- Acquisition of detailed photographic data of the plasma flow and accelerated particles.
- Validation of the photographic and color reproduction process.
Conclusions:
- The developed plasma flow concept is effective for accelerating particles to hypervelocities.
- This method provides a viable approach for micrometeoroid simulation.
- The photographic techniques employed offer detailed analysis capabilities for hypervelocity phenomena.
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