Mt. St. Helens Flight [09/19/95] Bryan Blair and Jim Garvin's Data Log Combined Slicer (GPS day 262) Pilot: Virgil Rabine Co-Pilot: George Postell Local GMT Take Off: 09:35 AM Taxi start: 16:28:00 Wheels Up: 16:36:25 Sector: Activity: 500,000 [95091901.idl] Data On - 5slick00 100Hz 5 beams, Warm up Fiber Calibration 537,000 Target JE - flight suit over dolly 554,678 Re-calibration, start energy only ~120 should be ~300 560,??? Data Off 560,000 [95091902.idl] Data On - 5slick00 100Hz 5 beams, [ch4 21C] 626,586 Data Off Ground Calibration 627,000 [95091903.idl] Data On - 5slick60 60Hz 5 beams, Fiber Calibration in Flight 639,272 Data Off ***Note: there is a reflector(?) midway thru waveform; it is also on the scope 640,000 [95091904.idl] Data On - 5slick00 100Hz 5 beams B -, Climbed to 17,500' Flew E -> W to Pacific Slicer experienced boresight alignment woes.. Bryan fixed ~ 60 minutes 647,878 3S -> 3E: W -> E (090 degrees) ~280 knots (140 m/s) Photos: frames #4-10 (*Dome at 17:32:47) 659,576 BJ 667,222 B - 673,982 3E 681,600 Data Off 682,000 [95091905.idl] Data On - 5slick00 100Hz 5 beams (2 mrad) 4S -> 4E: NE -> SW (225 degrees) @ 17:32:47 Photos: frames #11-17 C - 683,118 4S 697,782 Dome of MSH (17:40:50) 702,046 B - 703,398 A - 709,846 4E 712,264 Data Off end @ 17:42 713,000 [95091906.idl] Data On - 5slick00 100 Hz 5 beams (2 mrad) [6880 28C - diodes 19.2C], 17:49:00 fullout, 5S -> 5E: SE -> NW (337 degrees) 714,??? 5S 720,??? C - 729,614 Dome of MSH (17:50:38) 744,798 5E 750,180 Data Off end @ 17:45:00 751,000 [95091907.idl] Data On - 5slick00 100Hz 5 beams (2 mrad) [6880 28C - diodes 21.2C], 17:58:00 6S -> 6E: WNW -> ESE (112.5 degrees) Photos: frames #22-27 B - 752,??? 6S 755,758 C - 760,334 764,398 Dome @ 17:59:00? 776,142 6E 778,586 Data Off (diodes - 28.3C) 780,000 [95091908.idl] Data On - 5slick00 100Hz 5 beams (2 mrad), 7S -> 7E: NE -> SW (247.5 degrees), 18:08:22 B - (instead of C atten.) Photos: frames #28-35 792,148 Pre-mountain 795,470 Dome, Water @ 18:14 809,926 7E 812,838 Data Off (diodes - 25.2C) 813,000 [95091909.idl] Data On - 5slick00 100Hz 5 beams (2 mrad), SSW -> NNE (22.5 degrees), 18:17:54 Photos: frames #36-46? (*Dome @ 18:19:36) Tried roll over Spirit Lake +/= 5 degrees, but got no returns, then pitches Try again, fullout A - 834,398 Over Water! (*18:20:38 - 18:20:55) SW of MSH 840,612 Data Off 841,000 [95091910.idl] Data On - 5slick00 100Hz 5 beams [6880 28C - diodes 29C], 18:22:48 A -, fullout 8S -> 8E 847,838 B - 851,062 Pre- MSH 854,078 Dome 860,942 Water, Roll over Lake Riffe 871,810 Data Off - Pitch not over water +/= 5 degrees (*18:24:13 -> 18:24:00) 872,000 [95091911.idl] Data On - 5slick00 100Hz 5 beams [6880 28C - diodes 32C] B - C - 884,974 Water Pitch +/= 3 degrees @ 17,500' 892,020 Data Off 893,000 [95091912.idl] Data On - 5slick00 100Hz 5 beams (2 mrad), 1S -> 1E: N -> S (180 degrees), 18:30:50 Photos: frames #47-51 C - B -, 17,500' 1S 901,294 Pre - MSH (2 miles) 904,934 Dome @ 18:32:00 918,662 1E, Over Water S of MSH @ 18:32:39 921,938 Data Off - end @ 18:32:40 922,000 [95091913.idl] Data On - 5slick00 100Hz 5 beams (2 mrad), SW -> NE (088 degrees) Heading, 18:45:37 Photos: frames #52-59 C - 928,422 Over Earl GPS Site @ PANG @ 17.400' 933,440 Data Off - end 18:46:20 Wheels Down: 19:00:15 GMT Fullston: 19:07:33 GMT *Tape Backup: 500,000 - 934,000 (tape #1373C) 934,000 [95091914.idl] Data On - 5slick00 100Hz 5 beams, Fiber Calibration on Ground 945,154 Data Off 946,000 [95091915.idl] Data On - 5slick00 100Hz 5 beams (2 mrad), Ground Calibration - H - I (trigger on window 6880) - G - F (AF BF CF DF EF) 959,260 Data Off *Tape Backup: 500,000 - 960,000 (exabyte tape #1374C) GPS data logging (and installed new firmware) Ground horizontal calibration - copy GPS data to Pentium to run PNAV GPS Ground Site: 45 degrees, 34' 52.7149", 122 degrees, 35' 39.8014' (ellipsoid ~ -16.288) z ~ 5.602 asl Note: Gound Calibration: Window -> Mirror: 38cm Window -> Ground: 80cm Mirror -> Target: 25.16cm