The redundant reactions or member forces are treated as unknown and are obtaining by satisfying compatibility of structural nodes.
Shear strain is the ratio of the change in deformation to its original length perpendicular to the axes of the member due to shear stress.
Rocket nozzles give an excellent approximation to adiabatic expansion which is a reversible process, and hence they give efficiencies which are very close to that of the Carnot cycle.
Strain is the deformation or displacement of material that results from an applied stress.
Jet velocity is the highest velocity signal obtained from release point of Nozzle.