No abstract available
Topics: NASA Technical Reports Server (NTRS), Kim, Sam, NASA Dryden Flight Research Center
A simple approach for computing acceleration and velocity of a structure from the strain is proposed in this study. First, deflection and slope of the structure are computed from the strain using a two-step theory. Frequencies of the structure are computed from the time histories of strain using a parameter estimation technique together with an Autoregressive Moving Average model. From deflection, slope, and frequencies of the structure, acceleration and velocity of the structure can be...
Topics: NASA Dryden Flight Research Center, Pak, Chan-Gi, Truax, Roger
The NASA improved Ground Collision Avoidance System (iGCAS) team conducted an onsite usability study at Experimental Aircraft Association (EAA) Air Venture in Oshkosh, Wisconsin from July 19 through July 26, 2015. EAA Air Venture had approximately 550,000 attendees from which the sample pool of pilots were selected. The objectives of this study were to assess the overall appropriateness and acceptability of iGCAS as a warning system for General Aviation aircraft, usability of the iGCAS displays...
Topics: Chinske, Chris, Department of the Air Force, Jacobs Technology, Inc., Lamarr, Michael, Law,...
In support of the Adaptive Compliant Trailing Edge [ACTE] project at the NASA Armstrong Flight Research Center, displacement transfer functions were applied to the swept wing of a Gulfstream G-III airplane (Gulfstream Aerospace Corporation, Savannah, Georgia) to obtain deformed shape predictions. Four strainsensing lines (two on the lower surface, two on the upper surface) were used to calculate the deformed shape of the G III wing under bending and torsion. There being an insufficient number...
Topics: Jacobs Technology, Inc., Ko, William L., Lung, Shun-Fat, NASA Dryden Flight Research Center
No abstract available
Topics: NASA Technical Reports Server (NTRS), Carter, John, NASA Dryden Flight Research Center
This presentation discusses the FAA belief that this research may hold the key to enabling safe autonomous operation of vehicles.
Topics: NASA Dryden Flight Research Center, Skoog, Mark A.
This presentation provides valuable results, benefits and compliance to the FAA mandate in order to have clear guidelines to show aircraft designers how to integrate ADS-B technology into future UAS vehicles.
Topics: Arteaga, Ricardo, NASA Dryden Flight Research Center
Computational fluid dynamics (CFD) analysis was conducted to study the low-speed stall aerodynamics of a Gulfstream G-III airplane (Gulfstream Aerospace Corporation, Savannah, Georgia) swept wing modified with an experimental seamless, compliant flap called the Adaptive Compliant Trailing Edge (ACTE) flap. The stall characteristics of the modified ACTE wing were analyzed and compared with the unmodified, clean wing at the flight speed of 120 knots and altitude of 2300 feet above mean sea level,...
Topics: Bui, Trong T., NASA Dryden Flight Research Center
The aerodynamic effects of compliant flaps installed onto a modified Gulfstream III airplane were investigated. Analyses were performed prior to flight to predict the aerodynamic effects of the flap installation. Flight tests were conducted to gather both structural and aerodynamic data. The airplane was instrumented to collect vehicle aerodynamic data and wing pressure data. A leading-edge stagnation detection system was also installed. The data from these flights were analyzed and compared...
Topics: Ali, Aliyah N., Bui, Trong T., Cumming, Stephen B., Ellsworth, Joel C., Garcia, Christian A.,...
In support of the ongoing effort by the National Aeronautics and Space Administration (NASA) to bring supersonic commercial travel to the public, the NASA Armstrong Flight Research Center and the NASA Langley Research Center,in partnership with other industry organizations and academia, conducted a flight research experiment to analyze acoustic propagation in the Mach cutoff shadow zone. The effort was conducted in fall of 2012 and named the Farfield Investigation of No-boom Thresholds (FaINT)....
Topics: Cliatt, Larry J., II, Haering, Edward A, Jr., Hill, Michael A., NASA Dryden Flight Research Center
No abstract available
Topics: Aerospace Corp., Budd, Gerald D. (Jerry), NASA Dryden Flight Research Center, Webb, Darryl W.
This paper presents a holistic model order reduction (MOR) methodology and framework that integrates key technological elements of sequential model reduction, consistent model representation, and model interpolation for constructing high-quality linear parameter-varying (LPV) aeroservoelastic (ASE) reduced order models (ROMs) of flexible aircraft. The sequential MOR encapsulates a suite of reduction techniques, such as truncation and residualization, modal reduction, and balanced realization...
Topics: Brenner, Martin J., Computational Fluid Dynamics Research Corp., NASA Dryden Flight Research...
This presentation describes an unconventional process for analyzing and validating non-linear aerostructures.
Topics: Herrera, Claudia Y., Jacobs Engineering Group, Inc., Lung, Shun-Fat, NASA Dryden Flight Research...
NASAs Armstrong Flight Research Center has been engaged in the development of highly automatic safety systems for aviation since the mid 80s. For the past three years under Seedling and Center Innovation funding this work has moved toward the development of a software architecture applicable to autonomous safety. This work is now broadening and accelerating to address the airworthiness issues surrounding making a case for trustworthy autonomy. This software architecture is called the expandable...
Topics: NASA Dryden Flight Research Center, Skoog, Mark A.
There is a national effort to expedite advanced space technologies on new space systems for both government and commercial applications. In order to lower risk, these technologies should be demonstrated in a relevant environment before being installed in new space systems. This presentation introduces several low cost, short schedule space technology demonstrations using airborne and range facilities available at the Dryden Flight Research Center.
Topics: NASA Technical Reports Server (NTRS), 43e65fca1a5a4509908f06b8398f36c7,...
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Jan 11, 2001
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Jan 11, 2001
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NASA LaRC Office of Education
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NASA Connect segment exploring the process of flight testing. The segment features the Hyper-X and answers questions pertaining to its test stage.
Topics: NASA Connect, Hyper-X, Algebra, Engineers, Research, Test Altitude, NASA Dryden Flight Research...
Source: http://nasa.ibiblio.org/details.php?videoid=6280&start=40&subject=Aeronautics
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Jan 11, 2001
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Jan 11, 2001
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NASA LaRC Office of Education
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NASA Connect Video containing six segments as described below. NASA Connect segment involving students in a web activity that teaches how to use different shapes to design different aircraft. The segment also features an online tutorial for instruction in technology. NASA Connect segment exploring the current situation of commercial flight and what kinds of new technology is in place to help pilots today. NASA Connect segment explaining the tools, techniques, and requirements of designing an...
Topics: NASA Connect, Student Activity, Tuturial, Aircraft, Design, Geometric Shapes, Algebraic, Wing Area,...
Source: http://nasa.ibiblio.org/details.php?videoid=6274&start=20&subject=Aeronautics
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2000
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Tomayko, J. E. (James E.), 1949-
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xi, 180 pages : 25 cm
Topics: NASA Dryden Flight Research Center -- Research -- History, NASA Dryden Flight Research Center,...
