Title

Empirical Equations for the Thermodynamic Properties of Air and Nitrogen to 15,000°K

Description

Empirical equations were obtained for equilibrium dissociating and ionizing air and nitrogen for temperatures up to 15,000°K and in the entropy range 1.42 ≤ log (S/R) ≤ 2.06. The corresponding density range is approximately 10-6 to 102 amagats. The density ρ (p,S), enthalpy H (p,S), compressibility factor Z (p,S), and speed of sound a (p,S) are presented in equation form and as an IBM Fortran subroutine program. The errors in each empirical surface are indicated.

Date

1963

Index Abstract

Contrails and DTIC

Photo Quality

Not Needed

Report Number

AEDC-TDR-63-138

Corporate Author

ARO, Inc.

von Karman Gas Dynamics Facility

Extent

43

Identifier

AD0411624

AD0411624

Distribution Classification

1

Contract

AF 40(600)-1000

DoD Project

None Given

DoD Task

None Given

DTIC Record Exists

Yes

Distribution Change Authority Correspondence

None

Abstract

Empirical equations were obtained for equilibrium dissociating and ionizing air and nitrogen for temperatures up to 15,000°K and in the entropy range 1.42 ≤ log (S/R) ≤ 2.06. The corresponding density range is approximately 10-6 to 102 amagats. The density ρ (p,S), enthalpy H (p,S), compressibility factor Z (p,S), and speed of sound a (p,S) are presented in equation form and as an IBM Fortran subroutine program. The errors in each empirical surface are indicated.

Report Availability

Full text available

Date Issued

1963-07

Publisher

Arnold Air Force Station, TN : Arnold Engineering Development Center, Air Force Systems Command, United States Air Force

Provenance

IIT

Type

report

Format

1 online resource (viii, 43 pages) : ill.

Creator

Lewis, Clark H.

Burgess, Ernest G., III

Subject

Air

Nitrogen

Entropy

Density

Enthalpy

Tables (Data)

Date Modified

Scanned by request 4/20/2021 submitted by Teledyne (Other Industry - Domestic)

NTRL Accession Number

AD411624

Distribution Conflict

No

Access Rights

ASTIA