Engineering topics
Publications and source records attributed to Derr, R. L..
The inadequacies of the two commonly used assumptions are shown, along with the need for considering gas phase reactions. Kinetic parameters that describe the gas phase reactions for several ingredients are provided, and the first steps in convective combustion leading to deflagration to detonation transition are described.
A coaxial research dump combustor was used to investigate the acoustic modes structure and its effect on the inlet shock system. Acoustic wave structure was determined including the amplitude, frequency, and phase as a function of position. Inlet shock position, shock displacement, shock displacement frequency, and phase relative to acoustic wave structure were also defined. All results were compared to with one dimensional modeling.
Temperature measurements in gaseous reaction zone near surface of burning composite solid propellant, using modified line reversal pyrometer
Composite solid propellants surface structure and profile characteristics burning with various oxidizers and polyurethane binder by scanning electron microscopy
Burning solid ammonium perchlorate composite propellants surface structure observation to assess heterogeneous or subsurface reactions, using scanning electron microscope
Position control of burning solid nonmetallized propellant strand in combustion bomb using closed loop servomechanism
Modified line reversal pyrometer for measuring temperature profiles within gaseous reaction zones located above burning surfaces of composite solid propellants