Effect of Strain Isolator Pad Modulus on Inplane Strain in Shuttle Orbiter Thermal Protection System TilesNational Aeronautics and Space Administration, Scientific and Technical Information Branch, 1983 - Reusable space vehicles - 45 pages |
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5.0 Distance analysis approximately assumed thickness Average Standard deviation Calculated modulus cross section densified and undensified densified layer densified LI-900 tile densified material deviation See footnote Distance along tile effective modulus figure 17 glass coating inplane failure strain inplane strain James Wayne Langley Research Center layer Ea/Eb LI-900 tile material LI-900 tile specimens load-deflection curve loads and substructure Location of Modulus material properties Modulus Failure modulus of elasticity modulus ratio NASA obtained presented in reference shear and tensile shear modulus shown in figure silica SIP material SIP stiffness SIP/tile system SPECIMEN DIMENSIONS specimen number plate Specimen Test identifi specimens densified standard SIP stiffened SIP stiffer strain a cation strain isolator pad stress-strain stress-strain curves substructure deformations tensile and shear Test beam test results test specimens Thermal Protection System tile surface tile/SIP interface tile/SIP system Top & bottom typical Undensified Densified undensified LI-900 undensified specimens undensified tile Width Тор