An Estimate of the Effect of Multiple Ejection Rack Flexibility on Six-Degree-of-Freedom Store Ejection Conditions.
Abstract
A theoretical structural dynamic model of a MER (Multiple Ejection Rack), based upon BERNOULLI Pitch and yaw bending deflections and torsional rotation, is developed. Six-degree-of-freedom store ejection conditions are predicted. Sample computations were made for a M-117 bomb and constant aircraft pull-up rates corresponding to up to a 3.9 'g' normal acceleration. The computations were for the second, fourth, and sixth bombs dropped in the normal release sequence from an A-7D right wing center pylon station. Ejection velocities computed do not deviate more than 15% from the rigid case. Ejection pitching and rolling rates are affected more significantly by flexibility. However, the pull-up maneuver alone affects the ejection conditions to a greater extent than flexibility for most ejection variables and 'g' values greater than 2.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1975
- Accession Number
- ADA008329
Entities
People
- Leroy Devan
Organizations
- Naval Surface Warfare Center Dahlgren Division