USMP-2 Microgravity Data
Ground Based Data
Terrestrial dendritic growth velocity and radius calculations from 35mm
photonegatives exposed during operations of the IDGE apparatus prior to
its use for the microgravity experiments on USMP-2/STS-62.
Supercooling Velocity Vel. Error Radius Rad. Error
± 0.002(K) (microns/s) (± microns/s) (microns) (± microns)
_______________________________________________________________________________
1.306 390 5 - -
1.104 275 2 - -
1.104 275 3 - -
1.005 220 4 11.6 0.5
1.005 229.0 0.4 12.4 0.2
1.002 220 3 12.9 0.9
1.002 223 5 4 1
0.776 133.7 0.6 17.4 0.4
0.775 130 2 16 2
0.773 135 3 16.2 0.5
0.773 129 3 16.1 0.6
0.607 75 2 21 2
0.606 79.7 0.1 20.2 0.4
0.605 82.7 0.8 19 1
0.603 80.5 0.9 19.8 0.6
0.465 49.5 0.6 23.7 0.3
0.465 51.8 0.2 23.9 0.3
0.463 49.6 0.7 23 2
0.463 50.6 0.2 24.3 0.5
0.462 48.8 0.5 21 1
0.366 31.5 0.8 30.0 0.7
0.363 31.8 0.2 30.9 0.2
0.363 31.4 0.1 30.7 0.7
0.285 20.5 0.2 37.8 0.4
0.285 20.8 0.3 36.5 0.1
0.285 20.6 0.1 37.5 0.6
0.284 20.44 0.06 36.7 0.6
0.283 19.6 0.2 37 1
0.282 19.8 0.1 38 1
0.226 13.88 0.04 43.6 0.6
0.225 14.0 0.1 43.4 0.1
0.225 13.8 0.1 49 1
0.224 12.4 0.1 45.4 0.5
0.224 12.7 0.1 47.5 0.7
0.223 13.38 0.08 45.8 0.3
0.223 13.18 0.08 46.4 0.4
0.223 13.3 0.1 46.3 0.7
0.222 13.34 0.06 46.5 0.2
0.222 13.0 0.2 47.1 0.3
0.222 13.1 0.2 46.9 0.4
0.175 8.96 0.04 55 1
0.175 8.5 0.1 55.6 0.2
0.175 8.78 0.05 54.8 0.1
0.174 8.6 0.1 57.7 0.5
0.174 8.4 0.1 58 1
0.173 8.6 0.1 58.2 0.2
0.173 8.35 0.08 58.5 0.3
0.173 8.4 0.1 58 1
0.172 8.3 0.2 59 1
0.172 8.43 0.05 59.5 0.9
0.172 8.3 0.3 58.8 0.7
0.136 5.72 0.02 73 2
0.135 5.62 0.02 69.3 0.2
0.135 5.62 0.01 72 2
0.134 5.16 0.06 73.4 0.5
0.134 5.41 0.04 73 2
0.133 5.40 0.03 72.2 0.4
0.133 5.33 0.08 73.6 0.3
0.133 5.30 0.05 73.6 0.5
0.132 5.3 0.1 72.1 0.6
0.132 5.39 0.04 73 2
0.106 3.74 0.04 87 2
0.105 3.72 0.05 90.3 0.7
0.105 3.74 0.01 84 1
0.102 3.35 0.06 94 1
0.102 3.41 0.06 94 2
Microgravity Data
Microgravity dendritic growth velocity and radius calculations from the
slope of displacement-time data from the measurements made from 35mm photonegatives
exposed during operations of the IDGE apparatus on USMP-2/STS-62.
Supercooling Velocity Vel. Error Radius Rad. Error
± 0.002(K) (microns/s) (± microns/s) (microns) (± microns)
_______________________________________________________________________________
1.844 923 18 - -
1.753 756 15 - -
1.573 571 4 - -
1.311 343 1 - -
1.011 169.8 0.5 14.3 0.8
1.010 171 3 14.5 0.2
0.783 85.3 0.3 19.7 0.4
0.782 87.6 0.2 18.7 0.3
0.781 87.2 0.3 19.8 0.3
0.612 46.2 0.1 26.7 0.7
0.612 46.34 0.05 25.9 0.5
0.473 23.28 0.05 35.9 0.2
0.471 24.55 0.07 34.8 0.8
0.413 20.8 0.2 38 2
0.373 14.17 0.04 44.9 0.5
0.371 14.44 0.07 46.2 0.3
0.291 8.4 0.2 58.1 0.3
0.290 8.45 0.04 58.5 0.5
0.262 6.58 0.03 66 1
0.233 5.42 0.02 73.2 0.4
0.232 4.6 0.1 77.5 0.1
0.231 5.0 0.2 71.7 0.5
0.229 5.5 0.2 70 2
0.183 3.60 0.07 89.2 0.6
0.182 3.1 0.2 91.3 0.3
0.182 3.43 0.02 90.6 0.2
0.182 3.33 0.02 93.0 0.4
0.181 3.16 0.03 95.1 0.7
0.181 2.82 0.02 93 4
0.152 2.41 0.01 108 1
0.142 2.04 0.01 116 1
0.142 2.00 0.01 113 4
0.141 2.15 0.01 114.6 0.8
0.112 1.2 0.1 155 15
0.111 1.21 0.01 133 14
0.111 1.27 0.01 141 4
0.103 1.16 0.01 154 2
0.092 1.03 0.02 157 7
0.089 0.95 0.01 155 10
0.088 0.91 0.07 158 4
0.064 0.53 0.01 218 35