As part of the upgrades required to support the Medium Scale Critical Components (MSCC) program testing, an existing high-temperature and high-pressure heated fuel system (HFS) at the Aerodynamic and Propulsion Test Unit (APTU) is being modified and upgraded to provide endothermic heated fuel to scramjet propulsion test systems. This paper will briefly address the overall requirements for the new HFS and the overall design of the system. The paper will then discuss the activation and calibration plans for the HFS. Operational processes will be generally described. Various system shutdown parameters will be identified, and the resulting processes used to protect the system hardware will be documented. Particular attention will be given to the calibration of the mass-flow rate measurement instrumentation used to provide a high-fidelity calculation of the fuel mass flow entering the test engine.
NomenclatureAEDC = Arnold Engineering Development Complex APTU = Aerodynamic and Propulsion Test Unit C f = venturi flow coefficient C v = valve flow coefficient DARPA = Defense Advanced Research Projects Agency FCV = flow control valve FDS = fuel distribution system GN2 = gaseous nitrogen HFS = heated fuel system MSCC = Medium Scale Critical Components NIST = National Institute of Standards and Technology PCV = pressure control valve
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.