Agency: Air Research and Development Command
    Time: 1000 MST
    Altitude: 63.0 miles

UPPER AIR INSTRUMENTS

    Pressure-temperature: Ram pressure on truncated cone with ion type gage, four ion type
        pressure gages on side of cone
    Ionosphere: Vertical incidence ionosphere measurement comparing two signals, one near
        critical frequency and other far removed. Ion density with bipolar probe.
    Sky-brightness: Sky light intensity measured by photocells
    Voltage breakdown: Critical voltage breakdown point between electrodes.

DATA RECOVERY INSTRUMENTS

    Telemeter: NRL 23 channel PPM/AM system.

BALLISTIC INSTRUMENTS

    Firing Range
        Theodolites: Two Mitchell and seven Askania stations
        Cameras: Two Ballistic and three Bowen-Knapp stations
        Telescopes: Two stations
        Radar: Two modified SCR-584, S-Band stations
        Doppler: Four stations.

    Airborne
        Beacon: AN/APN-55, (XE-2), S-Band transponder
        Doppler: DOVAP transceiver
        Radio Cutoff: AN/ARW-17 FM control receiver for command fuel cutoff
        Other: Routine rocket performance instruments. (G. E. Co.).

ROCKET PERFORMANCE

    Firing angle: 0.0 degrees
    Program angle: 3.5 degrees
    Time to burnout: 62.5 sec.
    Altitude at burnout: 16.5 miles
    Velocity at burnout: 3876 ft. per sec.
    Time to zenith: 180 sec.
    Altitude at zenith: 63 miles
    Time to blowoff:
    Altitude at blowoff:
    Flight duration: 340 sec.
    Impact Coordinates: 12.6 miles north, 1.25 miles east
    Payload weight:
    Unfueled rocket weight: 8885 lbs.
    Unfueled rocket C.G.: 237.4 inches
    Gross weight at takeoff: 28,240 lbs.

BALLISTIC DATA

    Theodolites: Mitchell - trajectory data 0 to 72 sec., Askania - complete tracking from one
        station, to 80 degrees elevation from other
    Cameras: Bowen-Knapp - complete record, Ballistic - record to burnout
    Telescopes: Compete record for 35 sec.
    Radar: Both tracked to peak, one near impact
    Doppler: Good signals 0 to 306 sec.

DATA RECOVERY

    Telemeter: Good telemeter record
    Physical recovery: Rocket destroyed at impact.

EXPERIMENTAL DATA

    Pressure-temperature: Altitude too low for desired ionosphere data from propagation experiment, good
        systems test since equipment performed well
    Sky-brightness: Initial measurements of scattered sky light to 35 km. Intensity approximately
        proportional to atmospheric densities at various altitudes. Ratio of intensity through blue
            and green wratten filters 3.5. Blue intensity at 10 km. 0.5 watts/cm squared.
    Ion Density: Good data record. Proper interpretation indefinite. Good agreement with expected
        values from preliminary analysis.
    Voltage breakdown: Good data to 90 km, data invalid beyond.

COMMENTS

    Rocket performance: Normal takeoff. Subnormal propulsion performance.
    Telemeter: Improved performance with new circularly polarized antenna.

REPORTS AND PAPERS

    WSPG Preliminary Report on A-4 Missile, Round No. 15, fired 31 November 1946
    Preliminary Report on Radar Tracking of the A-4 Missile, Round No. 15, fired at WSPG 31
        November 1946, Ballistic Research Laboratories.
    Meterological Measurements for 31 November 1946, WSPG Air-Weather Section.
    "Atmospheric Temperature and Pressure Measurements Between the Altitudes of 40 and 110
        Kilometers,: Upper Air Research Program Report No. 2, 1 July 1948. Engineering
            Research Institute, University of Michigan, Ann Arbor, Michigan
    "Upper Air Research Program, Report No. 1 by the Navigation Laboratory, AMC, Cambridge
        Field Station, 1 September 1947.
    "Dynamic Probe Measurements in the Ionosphere," by A. Reifman and W. G. Dow, Phys. Rev.
        76, No. 7, 987, 1949
    "Dynamic Probe Measurements in the Ionosphere," Upper Air Research Program Report No. 3,
        Engineering Research Institute, University of Michigan, Ann Arbor, Michigan.
    "Day Sky Brightness Measured by Rocketborne Photoelectric Photometers," by H. a. Miley et
        al, Trans., Amer. Geophys U., Program 23rd. Annual Meeting, 321, 1952
    Report No.639 by H. P. Hitchcock and V. M. Reklis, Ballistics Research Laboratories of the
        Aberdeen Proving Ground, Maryland, October 1947
    Report No. 695, by H. P. Hitchcock, Ballistics Research Laboratories of the Aberdeen Proving
        Ground, Maryland, April 1947
    "V-2 Report No. 8," Minutes of Meeting of the V-2 Upper Atmosphere Research Panel on
        28 January 1947.
    "Final Report, Project Hermes V-2 Missile Program," by L. D. White, Report No. R52A0510,
        General Electric Company, September 1952.