X-1 to X-Wings: Developing a Parametric Cost Model

In todays cost-constrained environment, NASA needs an X-Plane database and parametric cost model that can quickly provide rough order of magnitude predictions of cost from initial concept to first fight of potential X-Plane aircraft. This paper takes a look at the steps taken in developing such a model and reports the results. The challenges encountered in the collection of historical data and recommendations for future database management are discussed. A step-by-step discussion of the development of Cost Estimating Relationships (CERs) is then covered

Sabot high speed interceptor AE 4273 aircraft design

Today's carrier based deck launched intercept (DLI) mission is a vital one that is aimed at protecting the carrier battle group and detering potential adversaries. The assets deployed on our carrier decks are able to complete this mission but with very limited range. The waverider concept has great potential to increase the range of this carrier based mission. As a result, a request for proposals (RFP) was developed which contains design requirements for an aircraft that can complete this mission through the utilization of waverider technology

Adaptations to MICROPEP and ROCKET to allow performance evaluation of multiple grain and/or airbreathing motors

Adaptations to two existing rocket motor performance computer programs were made. MICROPEP, a FORTRAN program developed by the Naval Air Warfare Center Weapons Division, China Lake, California to evaluate theoretical performance of various propellants in rocket motors, was modified to allow calculation of the effects of non-ideal expansion and mixed shifting equilibrium-frozen composition nozzle flow on performance. In addition, the ability to handle vitiated air heaters, to calculate combustion chamber Mach number and to calculate stagnation pressure for airbreathing engines was incorporated. ROCKET, an internal ballistics program written by the Lockheed Corporation and modified by the Naval Air Warfare Center Weapons Division, was updated to purge the program of unused code and allow input of performance losses in both the combustor and nozzle flows.http://archive.org/details/adaptationstomic1094539810Lieutenant, United States NavyApproved for public release; distribution is unlimited

Sabot high speed interceptor AE 4273 aircraft design

Today's carrier based deck launched intercept (DLI) mission is a vital one that is aimed at protecting the carrier battle group and detering potential adversaries. The assets deployed on our carrier decks are able to complete this mission but with very limited range. The waverider concept has great potential to increase the range of this carrier based mission. As a result, a request for proposals (RFP) was developed which contains design requirements for an aircraft that can complete this mission through the utilization of waverider technology.NASW-4435Approved for public release; distribution is unlimited