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There are a total of 13 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Flight testing a V/STOL aircraft to identify a full-envelope aerodynamic model
Author(s): Mcnally, B. David; Bach, Ralph E., Jr.
Abstract: Flight-test techniques are being used to generate a data base for identification of a full-envelope aerodynamic model of a V/STOL fighter aircraft, the YAV-8B Harrier. The flight envelope to be modeled includes hover, ...
NASA Center: Ames Research Center
Publication Year: 1988
Added to NTRS: 2008-08-06
Accession Number: 88N23762; Document ID: 19880014378; Report Number: A-88139, NAS 1.15:100996, NASA-TM-100996
Recursive inversion of externally defined linear systems
Author(s): Bach, Ralph E., Jr.; Baram, Yoram
Abstract: The approximate inversion of an internally unknown linear system, given by its impulse response sequence, by an inverse system having a finite impulse response, is considered. The recursive least squares procedure is shown ...
NASA Center: Ames Research Center
Publication Year: 1988
Added to NTRS: 2005-10-13
Accession Number: 88N19215; Document ID: 19880009831; Report Number: A-88093, NAS 1.15:100070, NASA-TM-100070
Recursive Inversion By Finite-Impulse-Response Filters
Author(s): Bach, Ralph E., Jr.; Baram, Yoram
Abstract: Recursive approximation gives least-squares best fit to exact response. Algorithm yields finite-impulse-response approximation of unknown single-input/single-output, causal, time-invariant, linear, real system, response of ...
NASA Center: Ames Research Center
Publication Year: 1991
Added to NTRS: 2005-09-30
Accession Number: 91B10027; Document ID: 19910000027; Report Number: ARC-12247
Recursive Inversion Of Externally Defined Linear Systems
Author(s): Bach, Ralph E., Jr.; Baram, Yoram
Abstract: Technical memorandum discusses mathematical technique described in "Recursive Inversion by Finite-Impulse-Response Filters" (ARC-12247). Technique is recursive algorithm yielding finite-impulse-response approximation of ...
NASA Center: Ames Research Center
Publication Year: 1992
Added to NTRS: 2005-09-30
Accession Number: 92B10774; Document ID: 19920000774; Report Number: ARC-12353
State estimation applications in aircraft flight-data analysis: A user's manual for SMACK
Author(s): Bach, Ralph E., Jr.
Abstract: The evolution in the use of state estimation is traced for the analysis of aircraft flight data. A unifying mathematical framework for state estimation is reviewed, and several examples are presented that illustrate a ...
NASA Center: Ames Research Center
Publication Year: 1991
Added to NTRS: 2005-08-25
Accession Number: 91N19082; Document ID: 19910009769; Report Number: A-88203, NAS 1.61:1252, NASA-RP-1252
A flight-test methodology for identification of an aerodynamic model for a V/STOL aircraft
Author(s): Bach, Ralph E., Jr.; Mcnally, B. David
Abstract: Described is a flight test methodology for developing a data base to be used to identify an aerodynamic model of a vertical and short takeoff and landing (V/STOL) fighter aircraft. The aircraft serves as a test bed at Ames ...
NASA Center: Ames Research Center
Publication Year: 1988
Added to NTRS: 2005-08-25
Accession Number: 88N16694; Document ID: 19880007311; Report Number: A-88095, NAS 1.15:100067, NASA-TM-100067
Sideslip-induced static pressure errors in flight-test measurements
Author(s): Parks, Edwin K.; Bach, Ralph E., Jr.; Tran, Duc
Abstract: During lateral flight-test maneuvers of a V/STOL research aircraft, large errors in static pressure were observed. An investigation of the data showed a strong correlation of the pressure record with variations in sideslip ...
NASA Center: Ames Research Center
Publication Year: 1990
Added to NTRS: 2005-08-25
Accession Number: 90N27702; Document ID: 19900018386; Report Number: A-90229, NAS 1.15:102846, NASA-TM-102846
Flight evaluation of differential GPS aided inertial navigation systems
Author(s): Mcnally, B. David; Paielli, Russell A.; Bach, Ralph E., Jr.; Warner, David N., Jr.
Abstract: Algorithms are described for integration of Differential Global Positioning System (DGPS) data with Inertial Navigation System (INS) data to provide an integrated DGPS/INS navigation system. The objective is to establish the ...
NASA Center: Ames Research Center
Publication Year: 1992
Added to NTRS: 2004-11-03
Accession Number: 93N22790; Document ID: 19930013601
Reconstruction of the 1994 Pittsburgh Airplane Accident Using a Computer Simulation
Author(s): Parks, Edwin K.; Bach, Ralph E., Jr.; Shin, Jae Ho
Abstract: On September 8, 1994, a Boeing 737-300 passenger airplane was on a downwind approach to the Pittsburgh International Airport at an altitude of 5000 feet above ground level (6000 feet MSL). While in a shallow left turn onto a ...
NASA Center: Ames Research Center
Publication Year: 1998
Added to NTRS: 2004-11-03
Document ID: 19990064562; Report Number: AIAA Paper 98-0503
Recursive inversion of externally defined linear systems by FIR filters
Author(s): Bach, Ralph E., Jr.; Baram, Yoram
Abstract: The approximate inversion of an internally unknown linear system, given by its impulse response sequence, by an inverse system having a finite impulse response, is considered. The recursive least-squares procedure is shown ...
NASA Center: Ames Research Center
Publication Year: 1989
Added to NTRS: 2004-11-03
Accession Number: 89A41670; Document ID: 19890054299
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