Title

Expansion of a Jet into Near Vacuum

Date

1965

Index Abstract

Coming Soon

Photo Quality

Incomplete

Report Number

AEDC TR 65-151

Creator

Cassanova, R. A.

Stephenson, W. B.

Corporate Author

Arnold Engineering Development Center

NTRL Accession Number

AD469041

Identifier

AD0469041

Distribution Classification

1

Contract

AF 40(600)-1000

DoD Project

None Given

DoD Task

None Given

DTIC Record Exists

No

Distribution Change Authority Correspondence

None

Abstract

The flow field of nozzles exhausting into a vacuum was investigated both analytically and experimentally. The applicability of the method of characteristics for jet expansions into a free molecular environment is discussed. Fifteen-degree, half-angle, conical nozzles with area ratios of 1.0 to 207 were tested with argon and nitrogen at total pressures of 100, 50, and 35 psia. Ambient pressures of .0001 to .000001 torr yielded total pressure to ambient pressure ratios of 10,000,000 to 1,000,000,000. Properties of the flow field were determined by the use of flat plates and flow direction vanes.

Report Availability

Full text available by request

Date Issued

1965-08

Publisher

Arnold Air Force Station, TN : Aerospace Environmental Facility, Arnold Engineering Development Center, Air Force Systems Command

Provenance

IIT

Type

report