Evaluation of Unsteady Loading on Store Trajectories

ABSTRACT: M4 Engineering proposes to develop methods for rapidly identifying store/aircraft configurations at elevated risk for adverse separation events. The methods developed will require from the user only data that is typically available prior to detailed influence load collection. One of the approaches will make use of independent parametric information for the store, bay, and ejector. enhance the Phase I method for predicting store trajectory response subject to unsteady aerodynamic loads. The techniques developed in this effort will complement existing methods by prioritizing cases for investigation with more computationally expensive test and analysis methods. BENEFIT: M4 Engineering currently offers the Rapid Unsteady Store Analysis Tool to address the demand for a store separation analysis tool that considers unsteady aerodynamic effects. This software has been delivered to the Air Force Seek Eagle Office (AFSEO) for use on a demonstration basis. While ongoing discussions with the Air Force program customers reinforce the likelihood of this transition path the method contained in RUSAT represents a significant increase in the data collection effort relative to a standard store certification analysis. The methods presented in this proposal will address that issue by requiring substantially reduced data collection. The software product developed in this effort will augment the higher fidelity and more resource intense offering in the current RUSAT software product. The proposed effort will create a tool that will allow prediction of store separation performance with significantly reduced resource allocation in order to avoid unpleasant"surprises"during vehicle development and testing. Satisfying this existing demand provides a tremendous commercial potential for the developed software tool.