Performing design, analysis and troubleshooting of aerospace components in elevated temperature and cryogenic conditions to determine structural integrity.
Thermal, Structural and Fatigue Analysis – and Subsequent Redesign of Heat Exchanger A number of cracks were found around the bolt holes of the inlet and outlet tubesheets of a heat exchanger in service at NASA/ Lewis. We performed failure analysis and subsequent redesign to ensure conformance to code. Cracks had initiated at the …
Cracked NASA Heat Exchanger – Analysis & Redesign Read More »
Chemical, tensile and hardness tests were performed, along with SEM. The scanning electron microscope revealed that the fracture had initiated at one location on the inside diameter surface.
Investigation of aircraft stabilizer trim motor bearing
We developed an analytical procedure for the prediction of thrust chamber life on NASA Space Shuttle Main Engines limited by the small number of firings. In an operating rocket thrust chamber the hot-gas-wall ligaments separating the coolant and combustion gas are subjected to pressure loading and severe thermal cycling. The resulting stresses cause plastic straining …
Prediction of Thrust Chamber Life on NASA Space Shuttle Main Engines Read More »
FEA Model Results O’Donnell Consulting performed a vibration (modal and spectrum) FEA analysis for a manufacturer’s linear variable displacement transducers. When a client wished to add a Linear Variable Displacement Transducer (LVDT) Unit to a stock hydraulic Actuator for a Demonstration Engine, they had concern regarding changes in the dynamic behavior of the Actuator. We …
Modal and Vibration Analysis on Linear Displacement Transducers (Actuators) Read More »
