Accession Number:

AD0759482

Title:

A Method for Obtaining Aerodynamic Coefficients from Yawsonde and Radar Data

Descriptive Note:

Memorandum rept.

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

• Whyte, R. H.
• Mermagen, W. H.

Report Date:

1973-03-01

Pagination or Media Count:

29.0

Abstract:

A numerical integration method for the reduction of yawsonde data from instrumented projectiles in free flight has been developed. Yawsonde data represent two-dimensional information solar aspect angle and spin while the actual motion is three-dimensional pitch, yaw, and spin. The method obtains a best fit of the aerodynamic coefficients in the equations of motion using numerical integration. The coefficients are iteratively adjusted. Linear aerodynamic coefficients have been derived from the flight of an M549, 155mm rocket assisted projectile.

Descriptors:

• *PROJECTILE TRAJECTORIES
• DATA PROCESSING
• FLIGHT TESTING
• EQUATIONS OF MOTION
• MOTION
• ROCKET ASSISTED PROJECTILES
• RADAR EQUIPMENT
• SPINNING(MOTION)
• TWO DIMENSIONAL FLOW

Subject Categories:

• Armor

Distribution Statement:

APPROVED FOR PUBLIC RELEASE