NASP and SDI Spearhead CFD Developments

The National Aerospace Plane (NASP) program's purpose, as stated by the National Space Council, is to "develop and demonstrate hypersonic technologies with the ultimate goal of single stage to orbit." The council has also directed that "performance of the experimental flight vehicle will be constrained to the minimum necessary to meet the highest priority research, as opposed to operational objectives .... The program will be conducted in such a way as to minimize technical and cost uncertainty associated with the experimental vehicle." The purpose of the Strategic Defense Initiative (SDI), as defined by President Bush, is "...protection from limited ballistic missile strikes, whatever their source." Computational fluid dynamics (CFD) plays a vital role in both endeavors.