Statistics

Launch Date / Time April 28, 2017 / 10:30 am (14:30 UTC)

Launch Site Berkeley Springs High School Courtyard

Berkeley Springs, WV 25411

39.6175 N, 78.2326 W, Elevation 189 m (620 ft)

Balloon Path - The red dots represent data points. Every 2 minutes, the tracking

device sent out a signal including GPS coordinates, speed, time, bearing, and elevation.

Ascension Rate

Predicted from "Burst Calculator" = 4.7 m/s (10.5 mph)

Measured Rate = 5.8 m/s (12.9 mph)

Burst Altitude Predicted 30000 m (98425 ft), (18 miles)

Actual 29023 m (95220 ft), (18 miles)

Burst Location Near Fairfield, PA

Descent Rate

Predicted from "Burst Calculator"

= 7.5 m/s (16.8 mph)

Measured from APRS Data

= 11.0 m/s (24.6 mph)

Landing Site Predicted using APRS data and the HABHUB projection tool.

39.843 N, 76.9842 W (Wooded area near Hanover, PA)

Actual landing site was

39.8413 N, 76.9896 W (Wooded area near Hanover, PA)

The difference was about 545 yards. In the picture below, the actual landing site

was where the call letters W2PRB appear.

Range Predicted 109.22 km (67.87 mi), Actual 108.72 km (67.56 mi)

Driving Distance 119.2 miles Driving Time = 2 hr. 9 min.

Time of Flight Predicted 2 hr. 15 min., Actual 2 hr. 9 min.

Strange Coincidence??? - Driving Time = Time of Flight

If I left the school immediately after the launch, I would have arrived at the landing site just in time.

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