Accession Number : ADA017850

Title :   Aircraft Flight Parameter Accuracy Requirements for Scoring Simulated Air-to-Ground Unguided Weapons Deliveries.

Descriptive Note : Final rept.,


Personal Author(s) : Hooks,Lawrence E.

Report Date : OCT 1975

Pagination or Media Count : 65

Abstract : To score computer-simulated air-to-ground weapons on a flight test range, it is necessary to have accurate time-space-position information on the firing aircraft at the instant of simulated launch. This report determines impact-point location errors for simulated 20mm cannons, 2.75-inch FFARs, and two bombs for errors in single aircraft parameters such as pitch angle, yaw rate and velocity. Test data, previous computer results, and simple physical models are used to evaluate these partial derivatives. Variables contributing to down-range error are grouped, as are variables contributing to cross-range error. Assuming that these grouped variables contribute independently and randomly to impact-point errors, sensitivity relations are developed. Allowable aircraft parameter errors may then be determined for specified down-range and cross-range errors on the calculated impact points of simulated weapons. Numerical examples are given.

Descriptors :   *Weapon delivery, *Aerial delivery, Air to surface, Accuracy, Bombs, Folding fins(Rockets), Flight paths, Slant range, Computerized simulation, Free fall weapons

Subject Categories : Fire Control and Bombing Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE