Thoriated nickel bonded by solid-state diffusion method

Solid-state diffusion bonding in an inert-gas atmosphere forms high-strength joints between butting or overlapping surfaces of thoriated nickel. This method eliminates inert-phase agglomeration

Development of high temperature materials for solid propellant rocket nozzle applications

Aspects of the development and characteristics of thermal shock resistant hafnia ceramic material for use in solid propellant rocket nozzles are presented. The investigation of thermal shock resistance factors for hafnia based composites, and the preparation and analysis of a model of elastic materials containing more than one crack are reported

Development of high temperature materials for solid propellant rocket nozzle applications Quarterly progress report, 1 Jul. - 30 Sep. 1969

Refractory metal and graphite composite research for solid propellant rocket nozzle application

A Numerical Algorithm For Solving the Nonlinear Differential Equations that Describe a Multistage Flash Evaporator

A numerical algorithm is formulated to solve the first order, nonlinear differential equations that describe a multistage flash evaporator. The nonlinearities appearing in the formulation of the algorithm are products of up to three terms with each term being a dependent variable raised to some power. To develop the algorithm, the first order differential equations are written in integral form. The dependent variables are then assumed to have a purely exponential dependence over a finite time step thereby allowing for the explicit integration of all terms. The solution of the differential equations is then reduced to the determination of the exponential dependences. The exponential dependences are determined by an iterative method. A computer code based upon the aforementioned algorithm was written. Before the algorithm was used to obtain solutions to a flash evaporator system, it was applied to several differential equations with known solutions. The algorithm was then used to obtain solutions for two perturbations in the twenty-third order system that describes a three stage flash evaporator. These solutions are compared with solutions obtained by other methods