UPPER AIR ROCKET SUMMARY                                                                       V-2
                                                                                                                           NO. 55
IDENTIFICATION                                                                                   14 June 1951

    Agency: Naval Research Laboratory
    Altitude: 0 miles

UPPER AIR INSTRUMENTS

    Cosmic radiation: Specially sensitized film packs (NRL, NIH)
    Solar radiation: Photo counters to measure radiant energy in the spectral bands
        0-100A and 1100-1900A. Sunflower spectrograph to measure radiation 1000-
        2000A. Detection of soft X-rays near 1200A by means of thermoluminescent
        crystals. Film plate densitometer for detection of soft X-radiation (NRL).
        Radiation effects on Chemical Corps test material (Chemical Corps).

DATA RECOVERY INSTRUMENTS

    Telemeter: NRL AN/DKT-2(XN-1) 30-channel system

COMMENTS

    Rocket performance: The rocket blew up on the stand at beginning of main stage

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