Intrasystem Electromagnetic Compatibility Analysis Program (IEMCAP) F-15 Validation. Part II. Interpretation of the Integrated Margin.
Abstract
The validity and usefulness of the Intra-system Electromagnetic Compatibility Analysis Program (IEMCAP) is assessed, based on its predictions for the F-15 air superiority fighter aircraft. The aircraft was simulated using a combination of known, measured and approximated data. A sensitivity study is also performed, indicating the effects of approximating unknown IEMCAP input parameters. Finally, a physical interpretation of the integrated EMI margin is given, and an assessment is made of its validity as an EMC figure merit. The IEMCAP is shown to successfully predict the known overall compatibility of the F-15, and is also shown to predict interference between equipments in cases where receiver blanking is provided by the system. Cases in which the program incorrectly predicted interference are generally attributed to uncertainties in modeling non-required spectra rather than program inaccuracy. The results support a judgment that the integrated EMI margin is a valid figure of merit for most equipment used on aircraft systems, with the exception of threshold vulnerable devices. This report is divided into Part I and Part II. The first part of the report describes how the F-15 aircraft was used as data base for a shakedown of the IEMCAP code and an assessment of its predictions. The results of an input parameter is devoted to a detailed exposition on the meaning and physical significance of the integrated EMI margin, the quantity calculated by the IEMCAP as a measure of interference. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1977
- Accession Number
- ADA045035
Entities
People
- R. A. Pearlman
Organizations
- McDonnell Aircraft Corporation