Agency: Naval Research Laboratory
    Time: 1413 MST
    Altitude: 72.2 miles

UPPER AIR INSTRUMENTS

    Cosmic radiation: Two geiger counter telescopes; and nuclear research emulsions.

DATA RECOVERY INSTRUMENTS

    Telemeter: PX-TA501, NRL 23 channel PPM/AM system.
    Airborne recorder: NRL nine channel neon lamp recorder.
    Physical recovery: Warhead separation explosive in control section
        "Daughter" ejection device in mid-section (Air Material Command).

BALLISTIC INSTRUMENTS

    Firing Range
        Theodolites: Two Mitchell and eight Askania stations.
        Cameras: One Ballistic and three Bowen-Knapp stations
        Telescopes: One station.
        Radar: One AN/CPS-4 S band station and one AN/CPS-5 L band station
        Doppler: Four stations.
        Impact location: None

    Airborne
        Beacon: AN/APN-55 S-Band transponder.
        Doppler: DOVAP transceiver
        Radio Cutoff: AN/ARW-17 FM control receiver for command fuel cutoff and recovery
            blowup.
        Aspect: Photocells and roll gyroscope.

ROCKET PERFORMANCE

    Firing angle: 0.0 degrees true
    Program angle: 6.25 degrees at 58 sec.
    Time to burnout: 60 sec.
    Altitude at burnout: 20.5 miles
    Velocity at burnout: 5600 ft. per sec.
    Time to zenith:
    Altitude at zenith: 72.2 miles
    Time to blowoff: 300 sec
    Altitude at blowoff:
    Flight duration:
    Impact Coordinates: 24.6 miles North and 4.8 miles West.
    Payload weight: 2286 lbs.
    Unfueled rocket weight: 9,140 lbs.
    Unfueled rocket C.G.: 240.9 inches
    Gross weight at takeoff: 28,355 lbs.

BALLISTIC DATA

    Theodolites: Mitchell data 0 to 60 sec
    Cameras: Bowen-Knapp - satisfactory operation; Ballistic - images to burnout
    Telescope: Tracked beyond zenith
    Radar: Data 0 to 300 sec.
    Doppler: Failed at 220 sec., periodic interruptions from rocket roll.

DATA RECOVERY

    Telemeter: Satisfactory operation
    Airborne recorder: Good record
    Physical recovery: Recorder in excellent condition; "Daughter" not recovered in spite of
        excellent tracking of its internal beacon.

EXPERIMENTAL DATA

    Cosmic radiation: Data obtained on penetration of 2 and 4 cm. of lead. Soft radiation observed
        as about 15% of total, may be ascribed to primary electrons.

COMMENTS

    Rocket performance: Propulsion below normal. Steering system error introduced roll beginning
        at 40 sec. which reached 60 rpm.

REPORTS AND PAPERS

    "Upper Atmosphere Research Report No. IV," by H. E. newell, Jr. and J. W. Siry, NRL Report
        No. R-3171, Naval Research Laboratory, October 1947.
    "V-2 Report No. 8," Minutes of Meeting of the V-2 Upper Atmosphere Research Panel on 4
        February 1947.
    BRL Report No. 695, by H. P. Hitchcock, Aberdeen Proving Ground Ballistic Research Laboratories,
        April 1949.