Time of firing: 1800 MST
    Agency: University of Michigan for SCEL
    Altitude: 93.6 miles

UPPER AIR INSTRUMENTS

    Density-pressure-temperature: SCEL sound grenades. Shock wave angle measure-
        ment for temperature. Ram and cone surface pressure gages for temperature.
    Composition: Two evacuated air-sampling bottles with associated timer and pyro-
        technic opening and sealing devices

DATA RECOVERY INSTRUMENTS

    Telemeter: PXTA-501, 23-channel PPM-AM system
    Physical recovery: Warhead control compartment separation by TNT

BALLISTIC INSTRUMENTS

    Firing Range
        Theodolites: Two Mitchell and seven Askania stations
        Cameras: Two ballistic and three Bowen-Knapp stations
        Telescopes: Four stations
        Radar: One modified SCR-584 S-band station

    Airborne
        Beacon: AN/APN-55 S-band transponder
        Radio Cutoff: AN/DRW-37 FM control receiver for command blowoff and cutoff
        Aspect: Three Giannini heliograph cameras
        Other: Routine rocket propulsion and control performance instrumentation
            (G. E.)

ROCKET INFORMATION

    Payload weight: 2535 lb
    Unfueled rocket weight: 8422 lb
    Takeoff weight: 27,840 lb
    Flight duration: 600 sec estimated

ROCKET PERFORMANCE

    Program angle: Seven degrees North
    Time to burnout: 65.3 sec
    Velocity at burnout: 4800 ft/sec
    Altitude at burnout: 123,200 ft
    Time to zenith: 225 sec
    Altitude at zenith: 93.6 miles
    Time to tail blowoff: 370 sec
    Altitude at tail blowoff: 276,000 ft
    Impact coordinates: Main body - 39.5 mi. north, 2.9 mi. west of launcher; warhead
        40 mi. north, 3.5 mi. west of launcher

BALLISTIC DATA

    Theodolites: Askania trajectory data form 1.6 to 69.6 sec
    Radar: Trajectory data from 0 to 369.5 sec

DATA RECOVERY

    Telemeter: Data from 0 to 18 sec, and from 50.5 to 52.5 sec; none thereafter
    Physical recovery: Two air-sampling bottles recovered. Three heliographs in
        excellent condition.

EXPERIMENTAL DATA

    Upper air composition: No data
    No air samples - one bottle seal ruptured at impact, opener failed on other bottle
    Because of the telemeter failure no information was obtained from the shock wave
        angle experiment or the cone pressure experiment

COMMENTS

    Rocket modifications: Four Pirani gages mounted on extension rods were placed at
        90-degree intervals, eight in. from the longitudinal axis of a 40-degree right
        circular cone. The rods were driven through an excursion of 8 in. with a period
        of about 3 sec in a direction parallel to the cone axis so as to intercept the
        shock wave.
            An opening for the ram-pressure Pirini gage was placed in the tip of the
        cone and four openings for cone side-pressure gages were placed at 90-degree
        intervals on the cone surface
            The holes for the grenades were located radially in the base of the warhead
    Rocket performance: Excellent

REPORT AND PAPERS

    "Atmospheric Phenomena at High Altitudes." L. M. Jones and H. W. Neill, Engineer-
        ing Research Institute, University of Michigan, Final Progress Report, Contract
        No. W-36-039-sc-32307, October 31, 1950