Comparative histological and biochemical studies were conducted with the flight muscles and mitochondria of several insect species to determine any correlation which exists between muscle structure and the metabolic activity of their mitochondria. Light microscopic examinations were used in the subcellular observations of these muscles. These included direct observations of freshly isolated material (wet mounts), as well as permanent preparations of transverse sections of some muscle fibers. Histological results were presented in a table which includes the muscle type, as well as the fiber, fibril, and mitochondria sizes of several insect species. The presence and abundance of mitochondria and their arrangement in straight rows between the fibrils, was shown to be common in the flight muscles of all insects investigated (except in the female cockroach, Periplaneta americana). In support of these results, a series of microphotographs showing a comparison of the features studied is presented. / Ph. D.

In this thesis, we describe a method for controlling the cycle-averaged velocity direction of a fixed-wing aircraft in an unpowered, helical descent. While the aircraft propulsion system is disabled, either intentionally or due to a failure, the aerodynamic control surfaces (aileron, elevator, and rudder) are assumed to be functional. Our approach involves two steps: (i) establishing a stable, steady, helical motion for which the control surfaces are not fully deflected and (ii) modulating the aircraft control surfaces about their nominal positions to ``slant'' the helical flight path in a desired direction relative to the atmosphere, whether to attain a desired impact location, to counter a steady wind, or both. The effectiveness of the control law was evaluated in numerical simulations of a general transport model (GTM). / Master of Science / When an unmanned aircraft is near an authorized airspace (a region of space where the aircraft is not authorized to fly) and experiences a failure such as loss of communication with the control tower,or failure of the GPS or propulsion system, then the aircraft is generally put into an aerodynamic flight termination. In this flight termination method, the aircraft propulsion system is switched off and the control surfaces (aileron, elevator and rudder) are fixed to induce a spin in the aircraft causing it to descend in a helical fashion. However, in the presence of external gusts the aircraft might drift into the unauthorized airspace; or once the aircraft is put into spin, one may want to be able to change the impact location to a safer place. To the best of our knowledge, there exist no control strategies to alter the impact location of the aircraft once it is put into spin and while is continues to spin. In this thesis we describe a method to do so. The aircraft impact location is altered by controlling the cycle-averaged velocity direction of a fixed-wing aircraft in an unpowered, helical descent. While the aircraft propulsion system is disabled, either intentionally or due to a failure, the aerodynamic control surfaces (aileron, elevator, and rudder) are assumed to be functional. Our approach involves two steps: (i) establishing a stable, steady, helical motion for which the control surfaces are not fully deflected and (ii) modulating the aircraft control surfaces about their nominal positions to “slant” the helical flight path in a desired direction relative to the atmosphere, whether to attain a desired impact location, to counter a steady wind, or both. The effectiveness of the control law was evaluated in numerical simulations of a general transport model (GTM).

No description available.

International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, California / Joint Advanced Missile Instrumentation (JAMI), a Central Test and Evaluation Investment Program (CTEIP) initiative, is developing advanced telemetry system components that can be used in an integrated instrumentation package for tri-service small missile test and training applications. JAMI demonstrated significant improvement in the performance of low-cost Global Positioning System (GPS) based Time-Space-Position Information (TSPI) tracking hardware that can be used for world-wide test and training. Acquisition times of less than 3 seconds from a cold start and tracking dynamics to over 60 Gs were demonstrated. The design of a programmable Flight Termination Safe and Arm device has been completed. High dynamic testing results of GPS and Inertial measurement Unit (IMU) devices and problems encountered are discussed. Actual testing data will be compared with the original system design requirements. Integration of the JAMI components into weapon systems is now underway. This paper discusses the progress of the program during the past year and the efforts planned for the final year of 2005.

International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Joint Advanced Missile Instrumentation (JAMI), a Central Test and Evaluation Investment Program (CTEIP) initiative, is developing advanced telemetry system components that can be used in an integrated instrumentation package for tri-service small missile test and training applications. JAMI demonstrated significant improvement in the performance of low-cost Global Positioning System (GPS) based Time-Space-Position Information (TSPI) tracking hardware that can be used for world-wide test and training. Acquisition times of less than 3 seconds from a cold start and tracking dynamics to over 60 Gs were demonstrated. The design of a programmable Flight Termination Safe and Arm device has been completed. High dynamic testing results of GPS and Inertial measurement Unit (IMU) devices and problems encountered are discussed. Initial flight-testing of the JAMI components used on the missile and target and the ground processing of the data have been completed. This paper discusses the progress of the program during the past year and the efforts planned for fiscal year 2004.

Master of Science / Department of Physics / Carlos Trallero / This report presents the details of an electron time-of-flight (ETOF) spectrometer to be used for characterizing ultrafast electric field pulses. The pulses will range in pulse-duration from femtosecond to attoseconds and in wavelength from the far infrared (FIR) to the extreme ultra violet (XUV). By measuring the photoelectrons in the presence of two electric fields and their quantum interference we will be able to extract the amplitude and phase of the electric field. For XUV pulses this is the well-known streaking and Reconstruction of Attosecond Beating by Interference of Two-Photon Transition (RABITT) method. The ETOF is based on a set of tunable electrostatic lenses capable of detecting 0-150 eV electrons. In addition, we can selectively increase the photoelectron yield of the spectrum. The precise tuning of the electrostatic lens system is done with a Genetic Algorithm (GA) with an intensity fluctuation discriminator in the fitness.

International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / The Interactive Analysis and Display System (IADS) provides the structures flight test engineer with enhanced test-data processing, management, and display capabilities necessary to perform safety critical aircraft analysis in near real time during a flight test mission. Germane to hazardous, fast-paced flight test programs is a need for enhanced situational awareness in the Mission Control Room (MCR). The IADS provides an enhanced situational awareness by providing an analysis and display capability designed to enhance the confidence of the engineer in making clearance decisions within the MCR environment. The IADS will allow the engineer to achieve this confidence level by providing a real-time display capability along with a simultaneous near real-time processing capability consisting of both time domain and frequency domain analyses. The system provides for displaying real-time data while performing interactive and automated near real-time analyses. The system also alerts the engineer when displayed and non-displayed parameters exceed predefined threshold limits. Both real-time data and results created in near real-time may be compared to predicted data on workstations to enhance the user’s confidence in making point-to-point clearance decisions. The IADS also provides a post-flight capability at the engineers project area desktop. Having a user interface that is common with the real-time system, the post-flight IADS provides all of the capabilities of the real-time IADS plus additional data storage and data organization to allow the engineer to perform structural analysis with test data from the complete test program. This paper discusses the system overview and capabilities of the IADS.

International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The Interactive Analysis and Display System (IADS) provides the structures flight test engineer with enhanced test-data processing, management and display capabilities necessary to perform safety critical aircraft analysis in near real-time during a flight test mission. The IADS provides enhanced situational awareness through an analysis and display capability designed to increase the confidence of the engineer in making clearance decisions within the Mission control Room (MCR) environment. The engineer achieves this confidence level through IADS’ real-time display capability and simultaneous near real-time processing capability consisting of both time domain and frequency domain analyses. The system displays real-time data while performing interactive and automated near real-time analyses; alerting the engineer when displayed parameters exceed predefined threshold limits. Real-time data and results created in near real-time may be compared to previous flight test data to enhance the user’s confidence in making point-to-point clearance decisions. The IADS provides a post flight capability at the engineer’s project area desktop, with a user interface common with the real-time system. The post flight IADS provides all of the capabilities of the real-time IADS with additional data access and data organization, allowing the engineer to perform structural analysis with test data from the each flight and compile summary plots and tables over the most of the test program. The IADS promotes teamwork by allowing the engineers to share data and test results during a mission and in the post flight environment. This paper discusses the system overview and capabilities of the IADS.

International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, California / The Air Force Flight Test Center in association with the Range Commanders Council (RCC) Range Safety Group is conducting a program that will explore the next generation of ground-based flight termination technology, known as the Enhanced Flight Termination System (EFTS) program. The first part of the program was successfully concluded in May 2002. The Government is leading this program with support from contractors, academia, and other RCC groups including the Telemetry Group, Frequency Management Group, and Telecommunications and Timing Group. Additionally, the National Security Agency is providing key support along with vendors who design, build and test range safety systems. This paper will discuss details of the design validation and development phases (part two) of the EFTS program. Redesign of flight termination receivers and ground system modification plans will be discussed as well as flight and ground hardware testing objectives.

ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, Nevada / Joint Advanced Missile Instrumentation (JAMI), a Central Test and Evaluation Investment Program (CTEIP) initiative, is developing advanced telemetry system components that can be used in an integrated instrumentation package for tri-service small missile test and training applications. JAMI demonstrated significant improvement in the performance of low-cost Global Positioning System (GPS) based Time-Space-Position Information (TSPI) tracking hardware that can be used for world-wide test and training. Acquisition times of less than 3 seconds from a cold start and tracking dynamics to over 60Gs were demonstrated. The final production designs and flight testing results are discussed along with comparisons to the initial project requirements. A discussion of integration initiatives and implementation issues are included.