Accession Number:

ADA067710

Title:

Some Effects of Vehicle Flow Field on the Capture Efficiency of a Gerdien Capacitor Atmospheric Probe.

Descriptive Note:

Final rept. 1 Oct 77-30 Sep 78,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE AEROPHYSICS LAB

Personal Author(s):

• Haldeman,Charles W.
• Bush,Robert H.
• Prey,Scott W.

Report Date:

1978-12-01

Pagination or Media Count:

41.0

Abstract:

Wind tunnel tests of a rocket borne upper atmospheric probe for measuring atmospheric charge density are reported. The Gerdien capacitor probe consists of a short section of a co-axial capacitor. This is mounted on pylons from a model of the Tomahawk vehicle. Results are reported for the mach number range 2 to 3 and altitude range 26 to 50 km. Over this range the ratio of mass flow through the probe to mass flow in an equal cross section of the free stream ranged from .69 to .80. Schlieren photographs of the flow are presented. Author

Descriptors:

• *SOUNDING ROCKETS
• *ATMOSPHERIC SOUNDING
• SHOCK WAVES
• FLOW FIELDS
• WIND TUNNEL TESTS
• CHARGE DENSITY
• SUPERSONIC FLOW
• ATMOSPHERIC DENSITY
• WIND TUNNEL MODELS
• CAPACITORS

Subject Categories:

• Atmospheric Physics
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE