Lyman J. Petrosky

TL;DR: A component maintenance system having a network linked to a data acquisition system, data analysis system, a historical file of component design and inspection information, and a diagnostic system having the capability to perform structural analysis of discontinuities identified by the data acquisition systems is discussed in this paper.

TL;DR: A manipulator for servicing tubes extending through a tube sheet having three major components: a base member, a block member, and a foot member is described in this article, where the manipulator supports itself using two sets of expandable and translatable grippers that anchor into the tube ends.

TL;DR: In this paper, a hybrid robotic joint actuator is presented, in which both the quick response times of an electric motor and the high torque capacity of a pneumatic motor are utilized to form a hybrid motor.

TL;DR: In this paper, the authors present a viewgraph form and include the following; nuclear thermal propulsion (NTP) engine system analysis program development, NTP engine analysis capability requirements, team resources used to support NESS development, expanded liquid engine simulations (ELES) computer model; ELES verification examples; NESS program development evolution; past NTP ELES analysis code modifications and verifications; general NTP engines system features modeled by NESS; representative NTP expander, gas generator, and bleed engine system cycles modeled by nESS; nESS program overview; N

TL;DR: The second phase of development of a Nuclear Thermal Propulsion (NTP) engine system design analysis code has been completed as mentioned in this paper, which can now analyze expander, gas generator, and bleed cycles, along with multi-redundant propellant pump feed systems.