Monte Carlo Analysis of S-Curve and Roll-Through-Zero Bomblet Dispersion Characteristics
Abstract
The flight dynamics and dispersion characteristics of candidate S- Curve and roll-through-zero bomblets are evaluated by use of the Monte Carlo method. Detailed analyses of bomblet-cluster breakup and bomblet configurational and aerodynamic asymmetries are used to establish the statistical input data required for the Monte Carlo analyses. Improved aerodynamic data packages for both the S-Curve and roll-through-zero bomblets are provided, and results of additional wind tunnel tests are discussed. Monte Carlo simulations show that for realistic flight environments both the S-Curve and roll-through-zero bomblets can achieve large and uniform impact patterns. For a representative dispenser HOB of 2000 feet, opening velocity of 900 fps, and 45 degrees flight path angle, impact pattern widths of 800 and 600 feet are computed for the S- Curve and roll-through-zero type bomblets, respectively. The effects of transonic and supersonic delivery, large static mass unbalance, nose-roughness asymmetry, and intentional fin cant on the S-Curve bomblet flight characteristics and dispersion are investigated in detail. Flight test disperson data for the S-Curve bomblet, as obtained from air-gun launched models, is compared with results from analytical simulations. A dynamic wind tunnel model support system, designed for testing the S-Curve bomblet, is described.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1973
- Accession Number
- AD0908907
Entities
People
- James E. Brunk