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  • Aircraft Propulsion and Power  (12)
  • Aircraft Stability and Control; Aircraft Propulsion and Power  (3)
  • Nucleic Acid Chemistry  (2)
  • 1
    Unbekannt
    Low-Cost Methods for Molecular Characterization of Mutant Plants : Tissue Desiccation, DNA Extraction and Mutation Discovery: Protocols (2015)
    Cham : Springer
    Details
    Schlagwort(e): Life sciences ; Nucleic acids ; Plant breeding ; Biology ; Technique ; Life Sciences ; Plant Breeding/Biotechnology ; Biological Techniques ; Nucleic Acid Chemistry
    Beschreibung / Inhaltsverzeichnis: Introduction --- Health and Safety Considerations --- Sample Collection and Storage --- Low-Cost DNA Extraction --- PCR Amplification for Low-Cost Mutation Discovery --- Enzymatic Mismatch Cleavage and Agarose Gel Evaluation of Samples --- Alternative Enzymology for Mismatch Cleavage for TILLING and Ecotilling: Extraction of Enzymes form Common Weedy Plants --- Example Data --- Conclusions.  
    Seiten: Online-Ressource (X, 35 pages) , 9 illustrations, 3 illustrations in color
    ISBN: 9783319162591
    URL: https://link.springer.com/openurl?genre=book&isbn=978-3-319-16259-1
    Sprache: Englisch
    Standort Signatur Erwartet Verfügbarkeit
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    E-BOOK
  • 2
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    Low-Cost Methods for Molecular Characterization of Mutant Plants (2021)
    Springer Nature
    Details
    Publikationsdatum: 2023-03-03
    Beschreibung: Plant Breeding/Biotechnology; Biological Techniques; Nucleic Acid Chemistry
    Schlagwort(e): Plant Breeding/Biotechnology ; Biological Techniques ; Nucleic Acid Chemistry ; bic Book Industry Communication::K Economics, finance, business & management::KN Industry & industrial studies::KND Manufacturing industries ; bic Book Industry Communication::K Economics, finance, business & management::KN Industry & industrial studies::KND Manufacturing industries::KNDP Pharmaceutical industries ; bic Book Industry Communication::T Technology, engineering, agriculture::TC Biochemical engineering
    Sprache: Englisch
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    Standort Signatur Erwartet Verfügbarkeit
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    E-BOOK
  • 3
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    Comparisons Between Unsteady Aerodynamic Events in a Gas Turbine Generator and an Identical Compressor Rig (1996)
    In:  CASI
    Details
    Publikationsdatum: 2011-10-14
    Beschreibung: Extensive testing done on a T55-L-712 turboshaft engine compressor in a compressor test rig is being followed by engine tests in progress as part of the Army Non-Recoverable Stall Program. Goals include a greater understanding of the gas turbine engine start cycle and compressor/engine operation in the regions 'beyond' the normal compressor stall line (rotating stall/surge). Rig steady state instrumentation consisted of 497 steady state pressure sensors and 153 temperature sensors. Engine instrumentation was placed in similar radial/axial locations and consists of 122 steady state pressure sensors and 65 temperature sensors. High response rig instrumentation consisted of 34 wall static pressure transducers. Rig and engine high response pressure transducers were located in the same axial/radial/circumferential locations in front of the first three stages. Additional engine high response instrumentation was placed in mach probes in front of the engine and on the compressor hub. This instrumentation allows for the generation of detailed stage characteristics, overall compressor mapping, and detailed analysis of dynamic compressor events.
    Schlagwort(e): Aircraft Propulsion and Power
    Materialart: Loss Mechanisms and Unsteady Flows in Turbomachines; AGARD-CP-571
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 4
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    Space Transportation Propulsion Systems (2001)
    In:  CASI
    Details
    Publikationsdatum: 2016-06-07
    Beschreibung: This report outlines the Space Transportation Propulsion Systems for the NPSS (Numerical Propulsion System Simulation) program. Topics include: 1) a review of Engine/Inlet Coupling Work; 2) Background/Organization of Space Transportation Initiative; 3) Synergy between High Performance Computing and Communications Program (HPCCP) and Advanced Space Transportation Program (ASTP); 4) Status of Space Transportation Effort, including planned deliverables for FY01-FY06, FY00 accomplishments (HPCCP Funded) and FY01 Major Milestones (HPCCP and ASTP); and 5) a review current technical efforts, including a review of the Rocket-Based Combined-Cycle (RBCC), Scope of Work, RBCC Concept Aerodynamic Analysis and RBCC Concept Multidisciplinary Analysis.
    Schlagwort(e): Aircraft Propulsion and Power
    Materialart: 2000 Numerical Propulsion System Simulation Review; 59-69; NASA/CP-2001-210673
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 5
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    Pilot-in-the-Loop Evaluation of a Yaw Rate to Throttle Feedback Control with Enhanced Engine Response (2012)
    In:  CASI
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: This paper describes the implementation and evaluation of a yaw rate to throttle feedback system designed to replace a damaged rudder. It can act as a Dutch roll damper and as a means to facilitate pilot input for crosswind landings. Enhanced propulsion control modes were implemented to increase responsiveness and thrust level of the engine, which impact flight dynamics and performance. Piloted evaluations were performed to determine the capability of the engines to substitute for the rudder function under emergency conditions. The results showed that this type of implementation is beneficial, but the engines' capability to replace the rudder is limited.
    Schlagwort(e): Aircraft Stability and Control; Aircraft Propulsion and Power
    Materialart: AIAA Paper 2012-5027 , E-663889 , AIAA Guidance Navigation and Control Conference; Aug 13, 2012 - Aug 16, 2012; Minneapolis, MN; United States
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 6
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    Validation of an Integrated Airframe and Turbofan Engine Simulation for Evaluation of Propulsion Control Modes (2015)
    In:  CASI
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: The National Aeronautics and Space Administration (NASA) has developed independent airframe and engine models that have been integrated into a single real-time aircraft simulation for piloted evaluation of propulsion control algorithms. In order to have confidence in the results of these evaluations, the integrated simulation must be validated to demonstrate that its behavior is realistic and that it meets the appropriate Federal Aviation Administration (FAA) certification requirements for aircraft. The paper describes the test procedures and results, demonstrating that the integrated simulation generally meets the FAA requirements and is thus a valid testbed for evaluation of propulsion control modes.
    Schlagwort(e): Aircraft Propulsion and Power
    Materialart: GRC-E-DAA-TN19726 , SciTech 2015; Jan 05, 2015 - Jan 09, 2015; Kissimmee, FL; United States
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 7
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    Application and Evaluation of Control Modes for Risk-Based Engine Performance Enhancements (2014)
    In:  CASI
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: The engine control system for civil transport aircraft imposes operational limits on the propulsion system to ensure compliance with safety standards. However, during certain emergency situations, aircraft survivability may benefit from engine performance beyond its normal limits despite the increased risk of failure. Accordingly, control modes were developed to improve the maximum thrust output and responsiveness of a generic high-bypass turbofan engine. The algorithms were designed such that the enhanced performance would always constitute an elevation in failure risk to a consistent predefined likelihood. This paper presents an application of these risk-based control modes to a combined engine/aircraft model. Through computer and piloted simulation tests, the aim is to present a notional implementation of these modes, evaluate their effects on a generic airframe, and demonstrate their usefulness during emergency flight situations. Results show that minimal control effort is required to compensate for the changes in flight dynamics due to control mode activation. The benefits gained from enhanced engine performance for various runway incursion scenarios are investigated. Finally, the control modes are shown to protect against potential instabilities during propulsion-only flight where all aircraft control surfaces are inoperable.
    Schlagwort(e): Aircraft Stability and Control; Aircraft Propulsion and Power
    Materialart: GRC-E-DAA-TN16656 , AIAA/ASME/SAE/ASEE Joint Propulsion Conference; Jul 28, 2014 - Jul 30, 2014; Cleveland, OH; United States
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 8
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    Piloted Simulation Evaluation of a Model-Predictive Automatic Recovery System to Prevent Vehicle Loss of Control on Approach (2014)
    In:  CASI
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: This paper describes a model-predictive automatic recovery system for aircraft on the verge of a loss-of-control situation. The system determines when it must intervene to prevent an imminent accident, resulting from a poor approach. It estimates the altitude loss that would result from a go-around maneuver at the current flight condition. If the loss is projected to violate a minimum altitude threshold, the maneuver is automatically triggered. The system deactivates to allow landing once several criteria are met. Piloted flight simulator evaluation showed the system to provide effective envelope protection during extremely unsafe landing attempts. The results demonstrate how flight and propulsion control can be integrated to recover control of the vehicle automatically and prevent a potential catastrophe.
    Schlagwort(e): Aircraft Stability and Control; Aircraft Propulsion and Power
    Materialart: GRC-E-DAA-TN12553 , Science and Technology Forum and Exposition (SciTech2014); Jan 13, 2014 - Jan 17, 2014; National Harbor, Maryland; United States
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 9
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    Flight Simulator Evaluation of Enhanced Propulsion Control Modes for Emergency Operation (2012)
    In:  CASI
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: This paper describes piloted evaluation of enhanced propulsion control modes for emergency operation of aircraft. Fast Response and Overthrust modes were implemented to assess their ability to help avoid or mitigate potentially catastrophic situations, both on the ground and in flight. Tests were conducted to determine the reduction in takeoff distance achievable using the Overthrust mode. Also, improvements in Dutch roll damping, enabled by using yaw rate feedback to the engines to replace the function of a stuck rudder, were investigated. Finally, pilot workload and ability to handle the impaired aircraft on approach and landing were studied. The results showed that improvement in all aspects is possible with these enhanced propulsion control modes, but the way in which they are initiated and incorporated is important for pilot comfort and perceived benefit.
    Schlagwort(e): Aircraft Propulsion and Power
    Materialart: NASA/TM-2012-217698 , AIAA Paper 2012-2604 , E-18385 , AIAA Infotech@Aerospace Conference; Jun 19, 2012 - Jun 21, 2012; Garden Grove, CA; United States
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 10
    facet.materialart.
    Unbekannt
    An Intelligent Propulsion Control Architecture to Enable More Autonomous Vehicle Operation (2017)
    In:  CASI
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: This paper describes an intelligent propulsion control architecture that coordinates with the flight control to reduce the amount of pilot intervention required to operate the vehicle. Objectives of the architecture include the ability to: automatically recognize the aircraft operating state and flight phase; configure engine control to optimize performance with knowledge of engine condition and capability; enhance aircraft performance by coordinating propulsion control with flight control; and recognize off-nominal propulsion situations and to respond to them autonomously. The hierarchical intelligent propulsion system control can be decomposed into a propulsion system level and an individual engine level. The architecture is designed to be flexible to accommodate evolving requirements, adapt to technology improvements, and maintain safety.
    Schlagwort(e): Aircraft Propulsion and Power
    Materialart: GRC-E-DAA-TN50405 , SciTech 2018; Jan 08, 2018 - Jan 12, 2018; Kissimmee, FL; United States
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
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