UPPER AIR ROCKET SUMMARY                                                                       V-2
                                                                                                                           NO. 54
IDENTIFICATION                                                                              18 January 1951

    Time of firing: 1314 MST
    Agency: Naval Research Laboratory
    Altitude: One mile

UPPER AIR INSTRUMENTS

    Cosmic radiation: Minimum ionization emulsions
    Solar radiation: Photon counters. Solar spectrograph with one-axis sunflower.
        Thermoluminescent crystals. Solar x-ray film detectors.

DATA RECOVERY INSTRUMENTS

    Telemeter: AN/DKT-2(XN-1) 30-channel pulse position system
    Physical recovery: Warhead separation explosives in control chamber section and nose
        cone separation primer cord in nose cone. Cable attached between sunflower
        and tail section of rocket.

BALLISTIC INSTRUMENTS

    Firing Range
        Theodolites: Three Mitchell and seven Askania stations
        Cameras: Three Bowen-Knapp stations
        Telescopes: Four stations
        Radar: Two S-band stations
        Impact location: Impact point computer

    Airborne
        Beacon: APN-55
        Radio Cutoff: AN/ARW-17. FM command cutoff.and blowoff
        Aspect: Two NRL horizon aspect cameras. Roll photocells. Three Reeves
            Inst. Co, gyroscopes
        Other: Bureau of Standards ionosphere height-finding station. Spectro camera.

ROCKET INFORMATION

    Unfueled rocket weight: 9296 lb
    Unfueled rocket C.G.: 238 in.
    Gross weight at takeoff: 29,227 lb

ROCKET PERFORMANCE

    Firing angle: 0 degrees
    Program angle: Seven degrees
    Time to burnout: 42.2 sec.
    Time to zenith: 54 sec.
    Altitude to zenith: One mile
    Time to blowoff: 315 sec

COMMENTS

    Rocket performance: The rocket burned for 13 sec in the launcher before taking off
        with very low thrust and was near vertical for next 36 sec. At this time it began
        to pitch north very rapidly; below normal thrust due to very poor mixture ratio
        rich in alcohol. No explanation available for apparant obstruction in oxygen feed
        lines.
    Experiments: The experiments were a total loss

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