KD7LMO - ANSR


ANSR ANSR-11 Summary Photos

ANSR-11 Flight Summary

Launch 9 Mar 2003, 1710 UTC, (10:10 AM MST)

Payloads Payload Computer, Experimental - Payload "E", and Micro Beacon II

Notes Just after burst at 103,446' contact was lost with the Micro Beacon and Experimental - Payload "E". As we ascended through 90,000' the wind picked up and generated moderate to severe turbulence as registered by the experimental payload. It appears the payloads probably were gyrating and swinging around. The cross band repeater downlink experienced severe fading from my location and the Eb/No (that is Signal to Noise ratio on a data link), was down 15-20 dB. Immediately after burst, slack in the lines was probably taken out rather abruptly and caused the string to fail. The energy from the stretching string was released and caused the experimental package to hit the Micro Beacon. All contact was lost with the experimental package and Micro Beacon. I've looked at several log files and don't see a single packet from either package. I also sent an interrogation signal to the experimental payload, but did not hear back.

Flight Summary

Payload computer recovered.

76.4 statue miles from the launch site on a heading of 89° true.

Fight time 2:51:12, landed 2001 UTC, (1:01 PM MST)

Departed at 700', landed at 2150'.

Peak altitude 103446'.

Average ascent rate 930'/minute. Average descent rate 1660'/minute. At touch down 524'/minute.

Lowest internal payload computer temperature 48.5° F, average 40.1° F.

GPS maintained 100% 3D lock during flight. Average PDOP 1.82. Average of 7.5 tracked satellites.

Average bus voltage 8.3 volts.

ANSR-11 Descent. Courtesy Karl, N7MXO.

Payload Performance

The following is the performance of each payload package.

Micro Beacon II – Operation nominal until separation from payload train in flight. Loss of contact immediately after burst.

Experimental - Payload "E" – Operation nominal until separation from payload train in flight. Loss of contact immediately after burst.

Payload Computer – Operation nominal.

Lessons Learned

Murphy always visits. Verify operational strength of string.

Flight Data Recorder and Maps

	Flight Data Recorder contents as comma separated text (ASCII) NOTE: This file contains the complete flight recording in one second increments. Additional information on telemetry measurands included with Payload Computer - Data Logger
	Topographical Map, Complete flight.

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