UPPER AIR ROCKET SUMMARY

V-2 NO. 13
24 October 1946

IDENTIFICATION

    Agency: Applied Physics Laboratory
    Time: 1218 MST
    Altitude: 65.0 miles

UPPER AIR INSTRUMENTS

    Cosmic radiation: Two geiger counter telescopes
    Solar radiation: Ultra-violet spectrograph
    Winds: High altitude wind studies with smoke puffs
    Photography: 35 mm. Devry motion picture camera.

DATA RECOVERY INSTRUMENTS

    Telemeter: PTXA-501, NRL 21 channel PPM/AM system
    Airborne recorder: Three brass tape recorders in nose, and three steel drum recorders in
        control chamber.
    Physical recovery: Nose separation with TNT and prima cord; "Daughter" ejection device in
        midsection

BALLISTIC INSTRUMENTS

    Firing Range
        Theodolites: Two Mitchell and three Askania stations
        Cameras: Three Bowen-Knapp stations
        Telescopes: One station
        Radar: Two modified SCR-584, S-Band stations
        Doppler: Four stations.
        Impact location: None

    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 and recovery
            blowoff
        Other: Rocket propulsion and steering performance instruments. (G. E. Co.).

ROCKET PERFORMANCE

    Firing angle: 000 degrees
    Program angle: 4.7 degrees
    Time to burnout: 59.8 sec.
    Altitude at burnout: 17.0 miles
    Velocity at burnout: 3990 ft. per sec.
    Time to zenith: 180 sec.
    Altitude at zenith: 65.0 miles
    Time to blowoff: 330 sec.
    Altitude at blowoff: 5.7 miles
    Flight duration:
    Impact Coordinates: 16.8 miles north and 2.4 miles west
    Payload weight:
    Unfueled rocket weight: 9,070 lbs.
    Unfueled rocket C.G.: 231.5 inches
    Gross weight at takeoff: 28,277 lbs.

BALLISTIC DATA

    Theodolites:
    Cameras:
    Telescopes: No data
    Radar: Trajectory data 0 to 330 sec.
    Doppler: Fair data 0 to 100 sec.
    Aspect: No data from gyros, angular motion data from camera.

DATA RECOVERY

    Telemeter: Fair to good record 0 to 180 sec., then fading and intermittent.
    Physical recovery: Steel drum recorder, camera, and spectrograph recovered; rocket
        remains scattered over wide area
    Airborne recorder: No data obtained.

EXPERIMENTAL DATA

    Cosmic radiation: No comments furnished
    Solar radiation: No data, light leak in film cassette
    Winds: No reliable conclusions, due to lack of photographic detail

COMMENTS

    Rocket performance: Propulsion below normal..

REPORTS AND PAPERS

    "High Altitude Researhc Using the V-2 Rocket, March 1946 - August 1947," by L.W. Fraser
        and E. H. Siegler, Bumblebee Series Report No. 81, Applied Physics Laboratory, The
            Johns Hopkins University, July 1948.
    "Preliminary Report on High Altitude Photography," by C. T. Holliday, Photog. Engr. 1:16,
        1950
    Report No.695, by H.P. hitchcock, Ballistics Research Laboratories, Aberdeen Proving
        Ground, April 1949
    Report No.639 by H.P. hitchcock and V.M. Reklis, Ballistics Research Laboratories
        Aberdeen Proving Ground, October 1947
    "V-2 Report No. 7," Minutes of Meeting of the V-2 Upper Atmosphere Research Panel on
        4 November.
    "Final Report, Project Hermes V-2 Missile Program," by L. D. White, Report
        No. R52A0510, General Electric Company, September 1952.

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