Report presenting transient data from approximate step and sinusoidal disturbances of fuel flow on a turbojet engine operated at one constant simulated altitude and flight condition. Results regarding coefficients of differential equations, Fourier representation, frequency response, transient analysis, and a comparison of the various analytical methods are provided.

Report presenting the effects of approximately 50-percent biaxial stretch-forming on the tensile and crazing properties of polymethyl methacrylate. Results indicated that biaxially stretch-forming polymethyl methacrylate approximately 50 percent does not affect its tensile strength of secant modulus of elasticity in tension. Results regarding standard tensile tests, stress-solvent crazing tests, long-time tensile tests, discussion of mechanism of crazing, accelerated weathering tests, additional experimental work, and possible applications of stretch-forming are provided.