UPPER AIR ROCKET SUMMARY                                                                       V-2
                                                                                                                           NO. 23
IDENTIFICATION                                                                                    8 April 1947

    Agency: Applied Physics Laboratory
    Time: 1713 MST
    Altitude: 63.5 miles

UPPER AIR INSTRUMENTS

    Cosmic radiation: Two geiger counter telescopes
    Solar radiation: Ultra violet spectrograph
    High altitude photography: One modified K-25 camera.

DATA RECOVERY INSTRUMENTS

    Telemeter: PXTA-501, 23 channel NRL PPM/AM system.
    Airborne recorder: Neon lamp photographic recorder.
    Physical recovery: Separation of nose by TNT and prima cord.

BALLISTIC INSTRUMENTS

    Firing Range
        Theodolites: Two Mitchell and eight Askania stations.
        Cameras: Three Bowen-Knapp stations
        Telescopes: Two stations
        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.
        Aspect: Roll photocell and gyro, and one zenith angle gyro.

ROCKET PERFORMANCE

    Firing angle: 000 degrees
    Program angle: 5.2 degrees
    Time to burnout: 57.0/60.0 sec.
    Altitude at burnout: 19.5 miles
    Velocity at burnout: 3825 ft. per sec. max. at 60.5 sec.
    Time to zenith:
    Altitude at zenith: 63.5 miles
    Time to blowoff: 323 sec
    Altitude at blowoff:
    Flight duration:
    Impact Coordinates: 19 miles North and 0.7 miles West.
    Payload weight:
    Unfueled rocket weight: 8840 lbs.
    Unfueled rocket C. G.: 238 inches
    Gross weight at takeoff: 27,460 lbs.

BALLISTIC DATA

    Theodolites: Mitchell trajectory data 0 to 64.7 sec., Askania data 25 to 90.3 sec.
    Cameras: Bowen-Knapp - satisfactory, Ballistic data 28 to 63 sec.
    Telescope: No information furnished
    Radar: Tracked for 320 sec., partial data because cameras jammed
    Doppler: Data 0 to 90 sec., signals noisy and intermittent thereafter
    Impact location: No information furnished
    Aspect: Roll photocell - no data; Gyro data good - roll period 9 sec.

DATA RECOVERY

    Telemeter: No information furnished
    Physical recovery: Good recovery of camera, spectrograph, and recorder
    Recorder: Failed to operate.

EXPERIMENTAL DATA

    Cosmic radiation: No information furnished
    Solar radiation: No information furnished
    High altitude photography: No results, camera began operating five minutes before takeoff.

COMMENTS

    Rocket performance: Propulsion cutoff in two stages by rocket timer.

REPORTS AND PAPERS

    "High Altitude Research Using the V-2 Rocket, March 1946 - April 1947," by L. W. Fraser, and
        E. H. Seigler, Bumblebee Series Report No. 81, Applied Physics Laboratory, The Johns
            Hopkins University, July 1948.
    Report No. 695, by H. P. Hitchcock, Ballistic Research Laboratories, Aberdeen Proving Ground,
        April 1949.
    "V-2 Report No. 10," Minutes of Meeting of the V-2 Upper Atmosphere Research Panel on
        7 May 1947.
    "Final Report, Project Hermes V-2 Missile Program," by L. D. White, Report No. R52A0510,
        General Electric Company, September 1952.

Return to the Main Page | Return to the V-2 Photo Page