Title:
Static Aeroelastic Analysis of a Thin-Film Clamped Ballute for Titan Aerocapture
Static Aeroelastic Analysis of a Thin-Film Clamped Ballute for Titan Aerocapture
Author(s)
Rohrschneider, Reuben R.
Braun, Robert D.
Braun, Robert D.
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Abstract
Many authors have shown the potential mass savings that a ballute can offer for both
aerocapture and entry. This mass savings could enhance or even enable many scientific and
human exploration missions. Prior to flight of a ballute several technical issues need to be
addressed, including aeroelastic behavior. This paper begins to address the issue of aeroelastic
behavior by developing and validating the Ballute Aeroelastic Analysis Tool (BAAT). The validation
effort uses wind tunnel tests of clamped ballute models constructed of Kapton supported by a rigid
nose and floating aft ring. Good correlation is obtained using modified Newtonian aerodynamics
and non-linear structural analysis with temperature dependent material properties and thermal
expansion. BAAT is then used to compute the deformed shape of a clamped ballute for Titan
aerocapture in both the continuum and transitional regimes using impact method aerodynamics
and direct simulation Monte Carlo.
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Date Issued
2006-05
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Text
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Paper