Accession Number : AD0877309

Title :   Air-to-Ground A-4 Tracking Accuracy.

Descriptive Note : Technical publication,

Corporate Author : NAVAL WEAPONS CENTER CHINA LAKE CA

Personal Author(s) : Bolstad, Alice E. ; Brugnoli, George A. ; Erickson, Ronald A.

Report Date : OCT 1970

Pagination or Media Count : 47

Abstract : The report describes in-flight measurements of the air-to-ground tracking accuracy of Navy pilots in an A-4 aircraft. Two entry maneuvers, roll-ahead and roll-in to a 45-degree dive, were used. The pilots were required to continuously track the center complex of a dummy SAM site for about 10 seconds during the dive. During selected passes, the gunsight reticle was electronically deflected either 17 or 60 milliradians (mils) in azimuth, and the pilot was required to replace it on the target by changing the aircraft flight path. The type of entry maneuver did not affect tracking accuracy, although the roll-in took 6 seconds longer to complete than the roll-ahead (32 versus 26 seconds). The root mean square radial error in tracking was between 5 and 6 mils over all passes. Radial error was 15 ils or less throughout 95% of the tracking time in all passes. Azimuth tracking accuracy subsequent to replacing the reticle on the target was not affected by the reticle deflection. A deflection of 60 mils produced a 2- to 3-mil larger elevation tracking error, however. The time to 'get back on target' was 3.1 seconds for the 17-mil deflection and 5.3 seconds for the 60-mil deflection. There was no statistically significant correlation between pilots' flight experience and their tracking performance, or between their subjective rating of their performance and their actual perfomance. Tracking accuracy was found to be as well summarized by sampling eight times per second as by sampling 16 times per second. (Author)

Descriptors :   (*PILOTS, REACTION(PSYCHOLOGY)), (*AERIAL GUNNERY, ACCURACY), (*ATTACK BOMBERS, GYROSCOPIC SIGHTS), LAUNCHING SITES, DIVING, TURNING FLIGHT, TRACK WHILE SCAN, PERFORMANCE(HUMAN), NAVAL PERSONNEL.

Subject Categories : Bombers
      Attack and Fighter Aircraft
      Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE