Experimental Investigation of Launch Vehicle Transient Input Simulation in Payload Tests

The technique of electronically simulating the structural dynamics of a launch vehicle in transient tests of payloads using multiple vibration excitation systems was investigated. The development of computer programs to determine transfer functions, synthesize shaker forcing functions, and control vibration exciters is described. A demonstration test using the techniques was described and results are presented. The evaluation of the potential for applying this technique to large Shuttle payloads is discussed

Monitoring cardiovascular function in the primate under prolonged weightlessness

Monitoring cardiovascular function in primates under prolonged weightlessnes

An Investigation of Teacher Candidate Perceptions: Using 21st Century Tools and Clinical Medical Model Practices to Teach Classroom Management Skills

A capstone submitted in partial fulfillment of the Requirements for the degree of Doctor of Education in the College of Education at Morehead State University by Helen J. Rader James P. Rader David R. Riel on March 13, 2014

Strengthening the managment of UN peacekeeping operations: an agenda for reform

The increase in UN peacekeeping operations after the Cold War was a challenge to the UN. Many actions were implemented, but there was a need for further measures. In this study Steven R. Rader presents his view on what the UN needed to do to meet the operational challenges

A study to define an in-flight dynamics measurement and data applications program for space shuttle payloads

Data measurement and interpretation techniques were defined for application to the first few space shuttle flights, so that the dynamic environment could be sufficiently well established to be used to reduce the cost of future payloads through more efficient design and environmental test techniques. It was concluded that: (1) initial payloads must be given comprehensive instrumentation coverage to obtain detailed definition of acoustics, vibration, and interface loads, (2) analytical models of selected initial payloads must be developed and verified by modal surveys and flight measurements, (3) acoustic tests should be performed on initial payloads to establish realistic test criteria for components and experiments in order to minimize unrealistic failures and retest requirements, (4) permanent data banks should be set up to establish statistical confidence in the data to be used, (5) a more unified design/test specification philosophy is needed, (6) additional work is needed to establish a practical testing technique for simulation of vehicle transients

Viking dynamics experience with application to future payload design

Analytical and test techniques are discussed. Areas in which hindsight indicated erroneous, redundant, or unnecessarily severe design and test specifications are identified. Recommendations are made for improvements in the dynamic design and criteria philosophy, aimed at reducing costs for payloads