SNAP PROGRAMS-UPPER ATMOSPHERE EXPERIMENTAL RE-ENTRY STUDY. Final Summary Report

Technical Report · Mon Apr 01 00:00:00 EST 1963

DOI:https://doi.org/10.2172/4702266· OSTI ID:4702266

Hagis, W

An experimental flight test was made to verify and improve the methods and techniques used to predict the aerothermodynamic effects on re-entering SNAP devices. The amount of aerodynamic heating as a function of body shape, size, and mode of entry was indicated. Test specimens yielded trajectory, aerodynamic heating data, heat distribution, and heat transfer of known bodies. IBM 7090 digital programs were utilized and so constructed that one digital code complemented the other, i.e., at any time during the re-entry period, the complete thermal history of the body is known. The test specimens consisted of lead bodies containing alkali metals, used as flaring material, and a larger titanium cylinder containing telemetry equipment to monitor the exterior and interior wall temperatures during re-entry. By judicious placement of transducer sensors, aerodynamic heating rates and mode of entry, i.e., tumbling, spinning, and/or stabilized, were determined. The lead bodies were consumed at high altitudes whereas the telemetry capsule survived re-entry. (auth)

• Research Organization: Martin-Marietta Corp. Aerospace Div., Baltimore
• DOE Contract Number: AT(30-3)-217
• NSA Number: NSA-17-024728
• OSTI ID: 4702266
• Report Number(s): MND-P-2953
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-63
• Country of Publication: United States
• Language: English

Related Subjects

SPACE APPLICATIONS AND TECHNOLOGY
AERODYNAMICS
ALKALI METALS
COMMUNICATIONS
COMPUTERS
CYLINDERS
DIGITAL SYSTEMS
DISTRIBUTION
FRICTION
HEAT TRANSFER
IBM 7090
INSTRUMENTS
LEAD
LEVELS
MEASURED VALUES
MOTION
ORBITS
RE-ENTRY
REMOTE CONTROL
SNAP SYSTEMS
SPACE VEHICLES
TELEMETRY
TEMPERATURE
THERMAL RADIATION
TRANSDUCERS
NESDPS Office of Nuclear Energy Space and Defense Power Systems