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Reentry response of the light weight radioisotope heater unit resulting from a Venus-Earth-Earth Gravity Assist maneuver accident

Description: Reentry analyses consisting of ablation response, thermal response and thermal stress response have been conducted on the Light Weight Radioisotope Heater Unit for Galileo/VEEGA reentry conditions. Sequential ablation analyses of the LWRHU aeroshell, the fuel clad, and the fuel pellet have been conducted in reentry regimes where the aeroshell has been deemed to fail. The failure criterion for ablation is assumed to be recession corresponding to 50% of the wall thickness (the design criterion recommended in the DOE Overall Safety Manual). Although the analyses have been carried far beyond this limit (as presented and discussed herein), JHU/APL endorses the position that failure may occur at the time that this recession is achieved or at lower altitudes within the heat pulse considering the uncertainties in the aerodynamic, thermodynamic, and thermo-structural analyses and modeling. These uncertainties result mainly because of the high energies involved in the VEEGA reentries compared to orbital decay reentries. Risk evaluations should consider the fact that for shallow flight paths the unit may disassemble at high-altitude as a result of ablation or may remain intact until it impacts with a clad that had been molten. 80 refs., 46 figs., 16 tabs.
Date: October 1, 1988
Creator: Hagan, J.C.
Partner: UNT Libraries Government Documents Department

Lampsilis teres, Specimen #356

Description: One preserved mussel specimen. The specimen exhibits an elliptical shape; moderately thick shell; white internal coloring; no external sculpturing. Collected in the Guadalupe basin. The specimen measures between 100 - 120 mm in length and was assessed to be subfossil when collected.
Date: December 22, 1976
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Lampsilis teres, Specimen #357

Description: One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; white internal coloring; no external sculpturing. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be subfossil when collected.
Date: December 22, 1976
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Amblema plicata, Specimen #49

Description: One preserved mussel specimen including the right valve only. The specimen exhibits a quadrate shape; thick shell; single looped beak sculpturing; white internal coloring; brown external coloring; external sculpturing in the form of ridges. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be very-long dead when collected.
Date: December 22, 1976
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #979

Description: One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; moderately thick shell; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.
Date: December 22, 1976
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #974

Description: One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; moderately thick shell; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.
Date: December 22, 1976
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #975

Description: One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; moderately thick shell; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.
Date: December 22, 1976
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #1618

Description: One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; moderately thick shell; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively recently dead when collected.
Date: December 22, 1976
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #976

Description: One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; moderately thick shell; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.
Date: December 22, 1976
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #977

Description: One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; moderately thick shell; white internal coloring; reddish-brown external coloring; external sculpturing in the form of pustules. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.
Date: December 22, 1976
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #978

Description: One preserved mussel specimen including the left valve only. The specimen exhibits a quadrate shape; moderately thick shell; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.
Date: December 22, 1976
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Uniomerus tetralasmus, Specimen #1238

Description: One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; thin shell; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Guadalupe basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: December 22, 1976
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Cyrtonaias tampicoensis, Specimen #174

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; dark brown external coloring; no external sculpturing. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected.
Date: December 22, 1976
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Cyrtonaias tampicoensis, Specimen #175

Description: One preserved mussel specimen including the right valve only. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. Collected in the Guadalupe basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.
Date: December 22, 1976
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Utterbackia imbecillis, Specimen #1346

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: October 5, 1978
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Utterbackia imbecillis, Specimen #1347

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: October 5, 1978
Creator: Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Utterbackia imbecillis, Specimen #1371

Description: One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; white internal coloring; olive external coloring; no external sculpturing. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.
Date: June 9, 1977
Creator: Britton, Joseph & Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Utterbackia imbecillis, Specimen #1372

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected.
Date: June 9, 1977
Creator: Britton, Joseph & Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Utterbackia imbecillis, Specimen #1373

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected.
Date: June 9, 1977
Creator: Britton, Joseph & Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Utterbackia imbecillis, Specimen #1357

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.
Date: June 9, 1977
Creator: Britton, Joseph & Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Utterbackia imbecillis, Specimen #1358

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected.
Date: June 9, 1977
Creator: Britton, Joseph & Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Utterbackia imbecillis, Specimen #1359

Description: One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; white internal coloring; dark brown external coloring; no external sculpturing. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected.
Date: June 9, 1977
Creator: Britton, Joseph & Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Utterbackia imbecillis, Specimen #1356

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; tan external coloring; no external sculpturing. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.
Date: June 9, 1977
Creator: Britton, Joseph & Hagan, J.
Partner: Elm Fork Natural Heritage Museum

Uniomerus tetralasmus, Specimen #1260

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; white internal coloring; dark brown external coloring; no external sculpturing. Collected in the Savannah River basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: June 14, 1977
Creator: Hagan, J. & Champagne, L.
Partner: Elm Fork Natural Heritage Museum