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--- projects:jimbob:launch4 [2020/05/21 09:54] – kevwal
+++ projects:jimbob:launch4 [2020/05/21 10:54] (current) – kevwal
@@ Line 48: / Line 48: @@
 Therefore, based on my 60g payload, to get an ascent rate of 1m/s = 4g free lift with a 71 min time to burst at 14,260ft.  I assume a Descent rate of 5m/s.
+Or I could use 2 balloons, to get an ascent rate of 1m/s = 5g free lift with a 267 min time to burst at 55,971ft.  I assume a Descent rate of 5m/s.
 ===== Flight path prediction =====
-Predictor based on Marston launch site here: http://predict.habhub.org/hourly/marston/ or anywhere http://habhub.org/predict/ or http://weather.uwyo.edu/upperair/balloon_traj.html
+Predictor based on Marston launch site here: http://predict.habhub.org/hourly/marston/ or anywhere http://habhub.org/predict/ or http://weather.uwyo.edu/upperair/balloon_traj.html (and KML viewer here: https://www.doogal.co.uk/KmlViewer.php)
@@ Line 65: / Line 67: @@
 ==== Launch Announcement ====
-Launching Wednesday 7th August around 10am a single tracker foil launch, from a site near Wellingborough (Northants).
+Launching XX around XX a single tracker foil launch, from a site near Wellingborough (Northants).
 Primary tracker: RFM22B based, $$HABTRK, 434.150Mhz (434138400 on my rx), USB, RTTY, 470Hz Shift, ASCII-7, 50 Baud, Parity none, 1 Stop bit