Accession Number:

AD0491854

Title:

The Relation between the Skin Friction Drag and the Spin Reducing Torque

Descriptive Note:

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

Report Date:

1942-07-04

Pagination or Media Count:

9.0

Abstract:

On certain simplifying assumptions, a relation between the skin friction drag and the spin reducing torque or axial couple is deduced. On the basis of measured values of the axial couple coefficient the skin friction drag coefficient is deduced and compared with the measured total drag. A method is derived for utilizing the measured values of the axial couple coefficient to estimate the skin friction drag coefficient.

Subject Categories:

  • Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE