SURFACE WIND SAMPLING PERIODS FOR UNGUIDED ROCKET IMPACT PREDICTION,

Abstract

Present methods used for obtaining wind measurements for application to unguided rockets involve a horizontal separation between the point(s) of wind measurement and the rocket trajectory. This presents a particular problem of how one best measures the wind, including the type of instruments to be used and the amount of data (sampling interval) to be used. The consequence of instrument selection is brought out in a discussion of the Linear Response Function, whereas the effect of using different sampling intervals is based on the study of the variance of wind differences between two points using different sampling periods which showed that sampling periods on the order of 1-5 minutes are needed, and the correlation between paired frequencies of the wind at the two points using cross-correlation techniques which showed that samples on the order of 5-10 minutes are required. The eddy size distribution of the wind samples used is also presented in tabular form. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1962
Accession Number
AD0281705

Entities

People

  • Henry Rachele

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Correlation Techniques
  • Cross Correlation
  • Data Science
  • Frequency
  • Information Science
  • Intervals
  • Measurement
  • Rocket Trajectories
  • Sampling
  • Trajectories

Readers

  • Aerodynamics/Aeronautics.
  • Mathematics or Statistics
  • Systems Analysis and Design