An apparent adaptive notch filter for thrust vector control.
Hydraulic controller possessing property of automatic tracking notch filter for open loop thrust engine control
Hung, J. C.↗
SEARCH · Engineering Papers
Results for “vectorization”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Numerical inversion of finite Toeplitz matrices and vector Toeplitz matrices
Numerical technique increases the efficiencies of the numerical methods involving Toeplitz matrices by reducing the number of multiplications required by an N-order Toeplitz matrix from N-cubed to N-squared multiplications. Some efficient algorithms are given.
Bareiss, E. H.↗
Matched conic solutions to round trip interplanetary trajectory problems that insure state-vector continuity at all boundaries
Matched conic solutions to round trip interplanetary trajectory problems for use in guidance and navigation simulation
Bond, V. R.↗
Ion engine thrust vector study, phase 2 Quarterly report
Performance prediction for expected thrust misalignment in electron bombardment ion thruster
Amboss, K.↗
The calculation of antenna radiation patterns by a vector theory using digital computers
Electric and magnetic field equations for solution of antenna problems
Schmidt, R. F.↗
Ion engine thrust vector study Quarterly report
Thrust stand and thruster designs for ion engines
Herron, W. G.↗
On the orthonormalization of sparse vectors.
Optimum order for column orthonormalization of sparse matrices, applying results to Gram-Schmidt and Householder methods
Tewarson, R. P.↗
Off-vertical rotation - A convenient precise means of exposing the passive human subject to a rotating linear acceleration vector
Disturbances of vestibular origin comprising motion sickness resulting from rotating tilted chair
Graybiel, A.↗
Effects of the acceleration vector on transient burning-rate augmentation of an aluminized solid propellant
Aluminized solid propellant transient burning rate augmentation during acceleration loads
Northam, G. B.↗
Off-vertical rotation - A convenient precise means of exposing the passive human subject to a rotating linear acceleration vector
Tilting rotating chair producing vestibular stimulus via linear rotating acceleration to study motion sickness
Graybiel, A.↗
Spin vector control of a spinning space station
Digital computer program simulates system and related functions. Program is intended for, but not limited to, altitude control studies of rotating space station. Russel's method of formulating and solving motion equations for system of rigid bodies connected by movable joints is applied. Program features are listed.
Hendricks, T.↗
Laser Doppler system for measuring three dimensional vector velocity Patent
Describing laser Doppler velicometer for measuring mean velocity and turbulence of fluid flow
Huffaker, R. M.↗
Spin Vector Control for a Spinning Space Station. Volume 1: User's Manual
Design, implementation, and use of digital computer program for determining dynamic behavior of dual spin space vehicles - Vol. 1
Hendricks, T.↗
Fuel-optimal angular momentum vector control for spinning and dual-spin spacecraft
Spinning and dual spin spacecraft angular momentum and axis control, investigating optimal fuel and small angle reorientation techniques
Larson, V.↗
Development of piezoelectric skin friction force vector transducer for a hypersonic wind tunnel
A surface shear force transducer for use in impulse type hypersonic tunnels is described. Sensors are constructed of lead zirconate titanate composition piezoelectric ceramic materials. The diameter of the sensing diaphragm is 0.75 inches and overall transducer dimensions are 1.0 inch diameter and 0.625 inch height. Analysis of the tranducer is made to help design criteria and fabrication techniques. Discussions on design and fabrication techniques are presented as well as performance of transducers delivered.
Kahng, S. K.↗
Wind-tunnel investigation at low speeds of a model of the Kestrel (XV-6A) vectored-trust V/STOL airplane
Longitudinal and lateral stability data were obtained with the model out of and in ground effect over a moving ground plane for a range of model angles of attack and sideslip at various thrust coefficients. These data were taken primarily at thrust coefficients which simulate transition speeds on the airplane between hover and 200 knots. Some data, however, represent the effect of thrust deflection at speeds up to 350 knots. Also presented are the effects of control-surface deflections and interference between the jets and free stream.
Margason, R. J.↗
Monte Carlo studies of the relaxation of vector end-to-end length in random-coil polymer chains.
Explore the source record for details and available documents.
Kranbuehl, D. E.↗
The effects of estimation of censoring, truncation, transformation and partial data vectors
The purpose of this research was to attack statistical problems concerning the estimation of distributions for purposes of predicting and measuring assembly performance as it appears in biological and physical situations. Various statistical procedures were proposed to attack problems of this sort, that is, to produce the statistical distributions of the outcomes of biological and physical situations which, employ characteristics measured on constituent parts. The techniques are described.
Hartley, H. O.↗