Aerospace Engineering Projects – including aircraft flight controls, landing gears, NASA heat exchangers and the Space Shuttle Main Engines.
Finite element analysis is often used to determine structural integrity of components operating in extreme environments (thermal / transient), stress, vibration & fatigue).
 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 – Failure 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.
Prediction of Thrust Chamber Life due to hot-gas-wall ligaments separating coolant & combustion gas subjected to severe thermal cycling
We developed a seven-year program for the recertification of aging pressure vessels and pressure systems for the NASA-Glenn Research Center. Some of the vessels and systems were over forty years old, and were part of the original NACA installation. Some were layered vessels for 3-6000 psi service, some were monobloc high pressure vessels, and others …
Recertification of Aging Pressure Vessels/ Systems at NASA Facility Read More »
Investigation of aircraft stabilizer trim motor bearing
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 concerns regarding changes in the dynamic behavior of the Actuator. We …
Vibration Analysis on Linear Displacement Transducers (Actuators) Read More »
