A Source-Doublet Approach to Modeling Triple Ejector Rack Store Configurations and Force Calculations

Item

Title
A Source-Doublet Approach to Modeling Triple Ejector Rack Store Configurations and Force Calculations
Date
1981
Index Abstract
Coming Soon
Photo Quality
Not Needed
Report Number
AFWAL TR 81-3059
Creator
Dyer, Calvin L.
Heath, Charles B.
Corporate Author
Flight Dynamics Laboratory
Laboratory
Flight Dynamics Laboratory
Extent
96
Identifier
ADA105427
Access Rights
Approved for public release, distribution unlimited
Distribution Classification
1
Contract
Laboratory Research - No Contract
DoD Project
2403
DoD Task
240305
DTIC Record Exists
Yes
Distribution Change Authority Correspondence
None
Abstract
The method presented in this report extends the FDL Subsonic Store Separation Program to include the aerodynamic modeling of the separating store as well as adjacent stores and the ejector rack. In the work presented in AFFDL- TR-74-130 only the volume effects of the stores and ejector rack are accounted for and Slender Body theory is used to calculate forces and moments on the separating store. In this report, doublets are used to model the upwash and sidewash of adjacent stores and the ejector rack. The induced flow-field portion of the total aircraft flow-field is included in the boundary conditions. Once the non-uniform flow-field has been modeled, three-dimensional point sources and doublets along the separating store axis are used to calculate loadings. Store loadings using Slender Body theory and the Source-Doublet method are compared to wind tunnel data. It is hoped that this method might offer a viable alternative to a complete mutual interference solution such as a paneling approach.
Report Availability
Full text available
Date Issued
1981-07-01
Provenance
AFRL/VACA
Type
report
Format
1 online resource
Media
AFWALTR81-3059.pdf