A solid propellant rocket motor uses a composite propellant with 16 % aluminum. The same propellant with 18 % aluminum enhances the combustion temperature by 5.7 %. Assuming in both cases that the solid particles are fully accelerated (i.e., Vs=Vg ) in the nozzle but the solid temperature remains constant (i.e., Ts= constant), calculate the ratio of specific impulse in the two cases. Aluminum specific heat is cs=903  J / kg ·K, and the specific heat at constant pressure for the gas is cpg=2006  

a rocket propellant manufacturer is studying the burning rate of propellant from three production processes four batches of propellant are randomly selected from the output of each process a 66307

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Problem: An experiment is conducted to compare four different mixtures of the components oxidizer, binder, and fuel used in the manufacturing of rocket propellant. To compare the four mixtures, five different samples of propellant are prepared from each mixture and readied for testing. Each of the five investigators is randomly assigned one sample of each of the four mixtures and asked to measure the propellant thrust.What is the most suitable statistical design to analyze this data (Zpt)? A) An