Contingency "Above (Low Level) Clouds" for Paul Maley's FP Charter Aircraft(s)

Presumptions:
 - Totality run FL200 and air speed 260 kts
 - Constraint: Latest return time (wheels down) to PPT is 13:30 LOCAL TIME (no issue)
 - time from t/o through climb/ascent to cruise = 1/2 hour
   (seems counter to 2000 fpm climb for ATR, more likely 15 min with airport pattern ops)
 - assume ground track of 65 nm in first 1/2 hour of flight to cruise (P.M .to verify)
 - time from t/o cruise through descent to landing = 1/2 hour
   (also more likely 15 min with airport pattern ops, but could be longer with traffic into PPT)
- assume NO WIND

Also:
 - Assume completion of heading alignment maneuver to start of totality run 6 mins before mid-eclipse
    immediately following completion of post tak-off ascent/cruise at T/O + 30 minutes.
 - Assume cremaining onm totality tun until 5 minutes after mid-eclipse
 - Assume totality run to have Sun "straight out" the LEFT side PAX windows

Also:
Presumes Direct Return to PPT at end of totality run (return to launch location can seperately be considered)
Coordinates for F'aaa airport PPT (post-eclipse return location):  17° 33′24″S 149° 36′41″W

Possible Launch Locations:

Anaa 17° 21 18″S, 145°30 30″W
Hao  18° 04 29″S, 140° 56 45″W
Hikueru 17° 32′41″S, 142° 36′47″W


SCENARIO FOR ANAA (No wind, FL200, Air Speed 260 kts, Mid-eclipse heading Solar AZ + 90 deg)  -- the RIGHT direction
Mid-Eclipse On Centerline: 18:33:25 UT.  Totality Duration = 4m 44s.  Solar Alt/Az = 27.2°/53.7°
DETAILS OF TOTALITY RUN, click toDOWNLOAD/DISPLAY: ANAA_ATR_BACKUP_BASELINE.pdf
FLIGHT PHASE U.T.
 Lat/Long
 Leg
dist nm
 Leg
Time
Latest Take-Off
 17:57:25
 17 21.3S, 145 30.5W

Est. Climb

64.7
 0h 30m 00s
Start Totality Run
 18:27:25
 17 57.53S, 146 26.77W




15.7
 0h 03m 37s
CII
 18:31:02
 18 10 12.6S, 146 17 0.1W




10.3
 0h 02m 23s
Mid-Eclipse
 18:33:25
 18 18.46S, 146 10.63W




10.2
 0h 02m 21s
CIII
 18:35:46 18 26 43.1S, 146 04 14.9W




11.5
 0h 02m  39s
End Totality Run
 18:38:25
 18 35.9S, 145 57.2W

  Return Cruise

153.2 0h 35m 21s
Est. Descent Start 19:13:46
 17 52.5S, 148 31.6W

 


65
 0h 30m 00s
Landing
 19:43:46
 17 33 24S, 149 36 41W

TOTAL BACKUP FLIGHT DISTANCE/DURATION
 330.6
 01h 46m 21s


SCENARIO FOR ANAA (No wind, FL200, Air Speed 260 kts, Mid-eclipse heading Solar AZ + 270 deg)  -- the WRONG direction
Mid-Eclipse On Centerline: 18:34:30 UT.  Totality Duration = 3m 41s.  Solar Alt/Az = 28.0°/53.2°
FLIGHT PHASE U.T.
 Lat/Long
 Leg
dist nm
 Leg
Time
Latest Take-Off
 17:57:01
 17 21.3S, 145 30.5W

       Est. Climb

65
 0h 30m 00s
"Extra" req. cruise
 18:27:01
 18 24.01S, 145 49.32W




6.4
 0h 1m 29s
Start Totality Run
 18:28:30
 18 30.21S, 145 12.03W




47.7
 0h 11m 00s
End Totality Run
 18:39:30
 17 52.09S, 145 41.97W

  Return Cruise

159.9
 0h 36m  54s
Est. Descent Start 19:16:24
 17:47.17S, 146:49.9W

 


65
 0h 30m 00s
Landing
 19:46:24
 17 33 24S, 149 36 41W

TOTAL BACKUP FLIGHT DISTANCE/DURATION
 343.9
 01h 49m 23s

274.1503
183430 70
183500 73






SCENARIO FOR Hao (No wind, FL200, Air Speed 260 kts, Mid-eclipse heading Solar AZ + 90 deg)
Mid-Eclipse On Centerline: 18:42:06 UT.  Totality Duration = 5m 17s.  Solar Alt/Az = 33.0°/49.3°
DETAILS OF TOTALITY RUN,  click toDOWNLOAD/DISPLAY: HAO_ATR_BACKUP_BASELINE.pdf
FLIGHT PHASE U.T.
 Lat/Long
 Leg
dist nm
 Leg
Time
Latest Take-Off
 18:06:06
 18 04.5S, 140 56.8W

Est. Climb

65
 0h 30m 00s
Start Totality Run
 18:36:06
 17 05.05S, 141 24.91W




14.5
 0h 03m 21s
CII
 18:39:27
 17 16 03.1S, 141 15 02.3W





11.5
0h 02m 39s
Mid-Eclipse
 18:42:06
 17 24.75S, 141 07.21W




11.4
 0h 02m 38s
CIII
 18:44:44
 17 33 23.4S, 140 59 26.4W




10.3
 0h 02m 22s
End Totality Run
 18:47:06
 17 41.16S, 140 52.46W

  Return Cruise

435.7
 1h 40m 33s
Est. Descent Start 19:27:39
 17 35.7S, 148 28.7W

 


65
 0h 30m 00s
Landing
 20:57:39
 17 33 24S, 149 36 41W

TOTAL BACKUP FLIGHT DISTANCE/DURATION
 613.4
 02h 51m 33s



SCENARIO FOR Hikueru (No wind, FL200, Air Speed 260 kts, Mid-eclipse heading Solar AZ + 90 deg)
Mid-Eclipse On Centerline: 18:37:49 UT.  Totality Duration = 5m 01s.  Solar Alt/Az = 30.4°/51.5°
DETAILS OF TOTALITY RUN,  click toDOWNLOAD/DISPLAY: HIKUERU_ATR_BACKUP_BASELINE.pdf
FLIGHT PHASE U.T.
 Lat/Long
 Leg
dist nm
 Leg
Time
Latest Take-Off
 18:01:49
 17 32.7S, 142 36.7W

Est. Climb

65.2
 0h 30m 00s
Start Totality Run
 18:31:49
 17 25.93S, 143 44.58W




15.1
 0h 03m 29s
CII
 18:35:18
 17 37 43.8S, 143 34 45.8W




10.9
 0h 02m 31s
Mid-Eclipse
 18:37:49
 17 46.25S, 143 27.65W




10.8 0h 02m 30s
CIII
 18:40:19
 17 54 43.2S, 143 20 35.6W




10.9
 0h 02m 30s
End Totality Run
 18:42:49
 18 03.19S, 143 13.54W

  Return Cruise

301.8
 01h 09m 39s
Est. Descent Start 19:52:28
 17 39.59S, 148 28.95W

 


65 0h 30m 00s
Landing
 20:22:28
 17 33 24S, 149 36 41W

TOTAL BACKUP FLIGHT DISTANCE/DURATION
 479.7
 02h 20m 39s