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by nickparker
338 days ago
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Bad popularizing article, doesn't cover the actual conclusion: The main points emerging from the combined simulation and experimental study on atmospheric entry of the paper plane are:
• Orbit: The paper space plane de-orbits from LEO extremely quickly
due to its very low ballistic coefficient. Atmospheric entry from a
400 km circular orbit occurs within a few days.
• Attitude: In the free-molecular portion of atmospheric entry,
above ∼120 km altitude, the paper space plane maintains a stable
flow-pointing attitude. Small-amplitude oscillations occur in pitch
and yaw. Although the coupled simulator is not designed for
application at lower altitudes, the results suggest the onset of
uncontrollable tumbling at ∼120 km altitude.
• Heating: Based on the hypersonic wind tunnel test results and
simulation, surface forces acting on the space plane during atmospheric entry are not expected to cause significant deformation.
However, the paper space plane experiences severe aerodynamic
heating in the order of 105 W/m2
(or 10 W/cm2
) for several
minutes. Accordingly, combustion or pyrolysis is expected during
atmospheric entry |
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This is definitely something that should be tested before the ISS deorbits. For science.