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Concepts of operations for a reusable launch vehicleRampino, Michael A. January 1900 (has links)
Thesis--School of Advanced Airpower Studies, 1996. / Shipping list no.: 1998-0921-M. "September 1997." Includes bibliographical references. Also available via Internet from the Air University Press web site. Address as of 11/3/03: http://aupress.au.af.mil/SAAS%5FTheses/Rampino/rampino.pdf; current access is available via PURL.
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Legal aspects of commercial space transportationMugarra, Leire. January 2008 (has links)
No description available.
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ARCHITECTURE DISTRIBUTED ON EUROPEAN LAUNCHERBlondeau, Fabrice 10 1900 (has links)
International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Space vehicle telemetry requirements have evolved considerably over the past decade. More and
more onboard data need to be acquired, not only for purposes of launch vehicle qualification in
flight, but also for calibrating simulations. The flexibility required of the architecture has also
changed the hardware considerably in order to fit into many different configurations without redoing
the whole equipment development. EADS-LV accommodates these evolving needs and costs with a
modular, distributed Telemetry channel architecture. This uses a single product line to meet the
various needs ranging from the small launch vehicle to the heavy Ariane 5 vehicles.
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STOPPING LAUNCH PAD DELAYS, LAUNCH FAILURES, SATELLITE INFANT MORTALITIES AND ON ORBIT SATELLITE FAILURES USING TELEMETRY PROGNOSTIC TECHNOLOGYLosik, Len 10 1900 (has links)
ITC/USA 2007 Conference Proceedings / The Forty-Third Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2007 / Riviera Hotel & Convention Center, Las Vegas, Nevada / Telemetry Prognostics is Failure Prediction using telemetry for launch vehicle and satellite space flight equipment to stop launch failures, launch pad delays, satellite infant mortalities and satellite on orbit failures. This technology characterizes telemetry behaviors that are latent, transient, and go undetected by the most experienced engineering personnel and software diagnostic tools during integration and test, launch operations and on orbit activities stopping launch pad delays, launch failures, infant mortalities and on orbit failures. Telemetry prognostics yield a technology with state-of-the-art innovative techniques for determining critical on-board equipment remaining useful life taking into account system states, attitude reorientations, equipment usage patterns, failure modes and piece part failure characteristics to increase the reliability, usability, serviceability, availability and safety of our nation’s space systems.
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A risk-informed manufacturing influenced design framework for affordable launch vehiclesMilner, Tyler Reid 27 May 2016 (has links)
Launch vehicle development programs have experienced significant difficulties in achieving first flight. Optimism during the initiation of these complex programs, coupled with the innovative nature of the technologies they employ, has resulted in a long list of programs unable to remain within the national means. A recent example of this challenge is the Constellation program which was canceled in 2011 due to excessive cost overruns and schedule slippage. The budgetary constraints currently placed on NASA's Space Launch System (SLS) highlights the need for a greater emphasis on affordability. Where affordability is defined in this research as the ability to remain under the mandated funding curve for all points in a system's life cycle while simultaneously meeting schedule goals given that performance requirements are met. The proposed research aims to address the gap between current practices and an affordability-centric design approach by capturing manufacturing technology effects on the affordability of the baseline vehicle concept.
Historically, cost overruns and schedule slippages escalate once production begins and are only truly realized at the first launch of a system. These trends, based upon systems which leveraged traditional materials and processes, suggest a shortcoming in the ability of current practices to assess manufacturing implications during the early design phases. The advent of advanced materials and the new process required to fabricate parts from them, further challenges these practices, and threaten to exacerbate the already excessive overruns experience once production begins. Manufacturing technologies, such as composite materials, automated fabrication processes, and the use of stiffener concepts, can no longer be considered independently. This observation leads to the conclusion that improvements in vehicle affordability can only be realized by bringing manufacturing information forward into the Conceptual Design phase.
The goal of this research is to support the development of affordable launch vehicles by quantitatively capturing the effects of manufacturing technology selection during Conceptual Design. A manufacturing influenced design methodology is combined with established techniques of time-phasing and risk propagation to evaluate the expected affordability of a launch vehicle baseline concept.
The method is benchmarked against expected performance and affordability trends established in literature. The experiments used to build this methodology provide interesting insight into the excess risk typically carried into Preliminary Design due to a lack of the temporal nature of cost. Fundamental implications include the notion that the most expensive candidate (i.e. the highest total cost) does not correspond to the candidate with the highest annual cost insurance. Furthermore, the assessment of risk — within the traditional total cost domain — by overlaying vertical constraints onto uncertainty distributions results in the inclusion of many unaffordable candidates.
The final chapter of this thesis applies the method to a relevant launch vehicle, the Exploration Upper Stage (EUS) of the SLS Block IB, which is currently in its Conceptual Design phase. This chapter compares two viable candidate manufacturing technologies based on affordability criteria established herein. The application of this methodology provides the decision maker with a significant amount of information previously unavailable and affords her additional degrees of freedom regarding appropriate Design, Development, Testing, Evaluation, and Production (DDTE&P) planning. This will ultimately enable the selection of an affordable vehicle baseline which will be robust to uncertainty in congress-appropriated funding and thus circumvent risks associated with government program cancellation.
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TDRSS COMPATIBLE TELEMETRY TRANSMITTERRupp, Greg 10 1900 (has links)
International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / An S-band telemetry transmitter has been developed for Expendable Launch Vehicles
(ELV's) that can downlink data through NASA's Tracking and Data Relay Satellite System
(TDRSS). The transmitter operates in the 2200 to 2300 MHz range and provides a number
of unique features to achieve optimum performance in the launch vehicle environment:
· Commandable QPSK or BPSK modulation format.
· Data rates up to 10 Mbps.
· Commandable concatenated coding provides superior link performance.
· Premodulation filtering produces excellent spectral containment characteristics.
· Phase noise of less than 3 degrees rms is maintained through launch and ascent
vibration profiles.
· A 30 watt nominal RF output power provides a robust RF link.
· Two RF antenna output ports with commandable selection of all power out to either
port or power split evenly between ports.
· Operating modes and conditions of the unit can be monitored through a number of
bilevel and analog outputs.
· A ruggedized mechanical design provides a reliable communications link for launch
vehicle environments.
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Design Considerations for a Launch Vehicle Development Flight Instrumentation SystemJohnson, Martin L., Crawford, Kevin 10 1900 (has links)
ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada / When embarking into the design of a new launch vehicle, engineering models of expected vehicle performance are always generated. While many models are well established and understood, some models contain design features that are only marginally known. Unfortunately, these analytical models produce uncertainties in design margins. The best way to answer these analytical issues is with vehicle level testing. The National Aeronautics and Space Administration respond to these uncertainties by using a vehicle level system called the Development Flight Instrumentation, or DFI. This DFI system can be simple to implement, with only a few measurements, or it may be a sophisticated system with hundreds of measurement and video, without a recording capability. From experience with DFI systems, DFI never goes away. The system is renamed and allowed to continue, in most cases. Proper system design can aid the transition to future data requirements. This paper will discuss design features that need to be considered when developing a DFI system for a launch vehicle. It will briefly review the data acquisition units, sensors, multiplexers and recorders, telemetry components and harnessing. It will present a reasonable set of requirements which should be implemented in the beginning of the program in order to start the design. It will discuss a simplistic DFI architecture that could be the basis for the next NASA launch vehicle. This will be followed by a discussion of the "experiences gained" from a past DFI system implementation, such as the very successful Ares I-X test flight. Application of these design considerations may not work for every situation, but they may direct a path toward success or at least make one pause and ask the right questions.
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Flowfield measurements in the vortex wake of a missile at high angle of attack in turbulenceLung, Ming-Hung 12 1900 (has links)
Approved for public release; distribution is unlimited / The flowfield downstream of a vertically-launched surface-to-air missile model at an angle of attack of 50° and a Reynolds number of 1.1 x 10(5) was investigated in a wind tunnel of the Naval Postgraduate School. The goal of this thesis is to experimentally validate the pressure measurement system for flowfield variables with elevated levels of turbulence; to determine the location and intensity of the asymmetric vortices in the wake of the VLSAM model at a raised level of freestream turbulence; and to display the asymmetric vortices by velocity mapping and pressure contours. The purpose is to correlate the results with the force measurements of Rabang to provide a greater
understanding of the vortex flowfield. The body-only configuration was tested. Two flowfield
conditions were treated: the nominal ambient wind tunnel condition, and a condition with grid
generated turbulence of 3.8% turbulence intensity and a dissipation length scale of 1.7 inches. The following conclusions were reached: 1) The relative strengths of the asymmetric vortices can be noted by the sharp spike shape in the ambient condition; this condition becomes diffused and becomes fatter in the turbulent condition; 2) The right side vortex has greater strength than the left side one as seen by the diffusion in the total pressure coefficient and static pressure coefficient contours with and without a turbulent condition; 3) an increase in turbulence intensity tends to reduce the strength of the asymmetric nose-generated vortices; also pushes the two asymmetric vortices closer together; 4) and crossflow velocities were examined and
were found to indicate the behavior denoted by the pressure contours. / http://archive.org/details/flowfieldmeasure00lung / Lieutenant, Republic of China Navy
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Factors influencing product launch strategies - a case study of the mining industrySultana, Yeasmeen, Mordarska, Klaudia, Kopecky, Daniel January 2016 (has links)
The purpose of this thesis is to investigate factors which influences product launch strategies.
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Strategie značky Perwoll na českém trhu / Stratey of Perwoll on the Czech marketNemeškalová, Markéta January 2009 (has links)
This thesis deals with building up and strategy of brand Perwoll on the Czech market. First - theoretical part - deals with particular stadiums of launch of a product. It deals about how to recognize consumers' needs through marketing research, analysis of consumers' behaviour, buying process and market segmentation and target group finding. It also concentrates on product and selling support. Practical part is about brand Perwoll - special detergent. First part describes it, second part is about launch of Perwoll White variant and last part are recomendations and identification of potential.
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