CASIE : Helicopters

DESERT SEARCHES: THE EFFECTIVENESS OF HELICOPTERS

John M. Bownds University of Arizona Department of Mathematics Tucson, Arizona 85721 U.S.A.		Charles P. McHugh Pima County Sheriffs Department P.O. Box 910 Tucson, Arizona 85702 U.S.A.

David Lovelock University of Arizona Department of Mathematics Tucson, Arizona 85721 U.S.A.		A. Larry Wright University of Arizona Department of Mathematics Tucson, Arizona 85721 U.S.A.

May, 1981

TABLE OF CONTENTS

	INTRODUCTION
	STRUCTURE OF EXPERIMENT
	NUMERICAL RESULTS
	DISCUSSION
	ACKNOWLEDGEMENTS
	APPENDICES
	REFERENCES

	Figure 1 - Contour map of test area (58 K)
	Figure 2 - Photograph of Sonoran desert terrain (85 K)
	Figure 3 - Photograph of helicopter crew searching desert (84 K)
	Figure 4 - Photograph of victim attracting attention (82 K)
	Figure 5 - "Creeping line" search pattern (30 K)
	Figure 6 - Aerial photograph on cloudy day (85 K)
	Figure 7 - Aerial photograph on sunny day (96 K)
	Figure 8 - Aerial photograph on sunny day indicating victim (98 K)
	Figure 9 - Graph: cumulative POD vs number of passes (21 K)

	Table 1 - Single pass POD, sunny conditions
	Table 2 - Single pass POD, cloudy conditions
	Table 3 - Multiple pass POD, sunny conditions
	Table 4 - Multiple pass POD, cloudy conditions
	Table 5 - Number of helicopter passes required, sunny conditions
	Table 6 - Number of helicopter passes required, cloudy conditions

UPDATE on Charles P. McHugh In November 1994, Charles P. McHugh retired from the Pima County Sheriffs Department after 20 years of service. Currently (January, 1999) he is an Assistant Director with the Arizona Division of Emergency Management, a division of the Department of Emergency and Military Affairs
5636 E. McDowell Road
Phoenix, Arizona 85008
602-231-6242,where he manages the response of state assets in natural, technological, and civil emergencies.