Accession Number:

ADA106058

Title:

Heat-Transfer and Pressure Tests on an Oblate Elliptic Nosetip in the NSWC/WO Hypersonic Tunnel at Mach Number 5 (WTR-1346).

Descriptive Note:

Wind tunnel data rept.,

Corporate Author:

NAVAL SURFACE WEAPONS CENTER SILVER SPRING MD

Personal Author(s):

• Jobe,M. D.

Report Date:

1981-06-01

Pagination or Media Count:

60.0

Abstract:

An extensive data base on a 21 elliptical nosetip shape to be utilized for verification of the AVCO MTSCT three-dimensional transition code was generated in the NSWC Hypersonic Tunnel at Mach Number 5. Four nosetip models in which the surface roughness was varied from a smooth wall to a roughness value of 10 mils were tested. The first three nosetips were instrumented with 112 backfaced chromel-alumel thermocouples. The fourth model i.e., 10-mil roughness instrumentation consisted of 67 thermocouples and 31 Statham pressure transducers. The test matrix consisted of sixty runs where the variables included angle-of-attack, tunnel Reynolds number, and wall enthalpy ratio. Author

Descriptors:

• *HEAT TRANSFER
• *NOSE TIPS
• DATA BASES
• SURFACE ROUGHNESS
• ANGLE OF ATTACK
• INSTRUMENTATION
• WALLS
• AEROTHERMODYNAMICS
• ENTHALPY
• PRESSURE DISTRIBUTION
• REYNOLDS NUMBER
• HYPERSONIC WIND TUNNELS
• WIND TUNNEL MODELS
• HYPERSONIC FLOW
• ELLIPSES

Subject Categories:

• Test Facilities, Equipment and Methods
• Guided Missile Warheads and Fuzes
• Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE