TURBOJET ENGINE PROCUREMENT COST ESTIMATING RELATIONSHIPS.
Research paper (Master's thesis),
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING
Pagination or Media Count:
Cost estimation is a critical phase of national defense planning, programming, and budgeting. The historical means of accomplishing this in the Air Force is largely qualitative and subjective. Quantitative cost estimation techniques and some major pitfalls in usage are explored. Despite many assumptions and approximations, cost estimating relationships are felt to offer a sound basis for cost estimation in practice. Turbojet engine costs and major characteristics are determined for fourteen engines, and an effort is made to reveal a basic cost-cahracteristic relationship. A linear or log-linear relationship is hypothesized. Although theoretical parameters of engine description appear promising, multiple regression of them singly and in combination fail to substantiate cost dependence. A single characteristic, specific weight dry weight divided by military thrust, accounts for 85 to 92 of cost per unit weight in a log-linear relationship, after four questionable data points are eliminated.
- Logistics, Military Facilities and Supplies
- Jet and Gas Turbine Engines