High Speed Signal And Data Processing Using Very Large Scale Integrated (VLSI)/VHSIC General Purpose Computer Systems

1982 ◽  
Author(s):  
R. Ramseyer ◽  
M. Johnson ◽  
J. Thomas
Keyword(s):  
Data Processing ◽  
High Speed ◽  
Large Scale ◽  
Computer Systems ◽  
General Purpose ◽  
General Purpose Computer ◽  
Purpose Computer

COMPUTER AND PROGRAMS FOR THE AP-C ANALYTICAL STEREOPLOTTER

1963 ◽  
Vol 17 (2) ◽  
pp. 155-168 ◽  
Author(s):  
E. C. Johnson ◽  
V. C. Kamm
Keyword(s):  
High Speed ◽  
General Purpose ◽  
Medium Size ◽  
Control Computer ◽  
General Purpose Computer ◽  
Complete Set ◽  
Purpose Computer

Tbe AP/C control computer is a specially designed, high speed, serial, binary, general-purpose machine with approximately 2000 words of memory. Although the machine is basically a general-purpose computer, in includes special facilities for communicating with the operator of the AP/C Stereoplotter for inputs from the operator’s handwheels and footwheel, and for outputs to servomechanisms on the AP/C viewing unit and coordinatograph. A complete set of programs for inner, relative and absolute orientations and for plotting operations is provided. In addition, the computer may be used for general-purpose computing when not required for plotting. In speed and versatility it is superior to most medium-size commercial computers.

Vibration Control of Flexible Multibody Aircraft During Touchdown Impacts

1987 ◽  
Vol 109 (3) ◽  
pp. 270-276 ◽  
Author(s):  
A. A. Shabana ◽  
R. D. Patel ◽  
A. DebChaudhury ◽  
R. Ilankamban
Keyword(s):  
Dynamic Analysis ◽  
Vibration Control ◽  
Random Process ◽  
Large Scale ◽  
Passive Control ◽  
Multibody System ◽  
General Purpose ◽  
Flexible Multibody ◽  
General Purpose Computer ◽  
Purpose Computer

A method is presented for the dynamic analysis and vibration control of large scale flexible multibody aircraft during the touchdown impacts and rollover motion. The rollover motion is simulated by modeling the uneven runway profile as a stationary zero mean space dependent random process defined by its spectral shape. The prescribed motions at the two landing gears will then represent a different time dependent random process with spectral shapes changing with the change in velocity of the aircraft. Composite materials which provide higher stiffness-to-weight ratios are used as a passive control system to reduce the aircraft vibration. The results of the numerical example presented showed that the use of composites can have a significant effect on attenuating the vibration of the aircraft during the touchdown impact and rollover motion. The numerical results are obtained using the general purpose computer program DAMS (Dynamic Analysis of Multibody System).

scholarly journals Computer Programs for Calculating Atomic Data For Ions

1971 ◽  
Vol 2 ◽  
pp. 509-511
Author(s):  
W. Eissner
Keyword(s):  
High Speed ◽  
Computer Programs ◽  
General Purpose ◽  
Atomic Data ◽  
Isoelectronic Sequence ◽  
University College ◽  
University College London ◽  
General Purpose Computer ◽  
Configuration Mixing ◽  
Purpose Computer

AbstractThis report is a continuation of the preceding review talk. I shall describe general purpose computer programs that have been developed in Professor Seaton’s group at University College London. Other speakers will present results produced with them.The programs require a minimum of input. General purpose means; not restricted to one ion or just one isoelectronic sequence. High speed is achieved by using approximations suitable for medium and highly ionized light atoms. The programs allow fully for configuration mixing, which plays an important role in ion calculations. Equations in M. J. Seaton’s review will be referred to as (S.number).

An Efficient Method for Calculating Damped Critical Speeds of Rotor-Bearing Systems

1991 ◽  
Author(s):  
D. Z. Wang ◽  
D. L. Taylor
Keyword(s):  
Element Model ◽  
General Purpose ◽  
Critical Speeds ◽  
Rotor Bearing ◽  
General Purpose Computer ◽  
System Equations ◽  
Newton Raphson ◽  
Reported Data ◽  
Derivatives Of ◽  
Purpose Computer

Abstract This paper describes an analytical approach for calculating the damped critical speeds of multi-degree-of-freedom rotor-bearing systems. It is shown that to calculate the critical speeds is equivalent to finding the roots of a proposed matrix algebraic equation. The technique employes a Newton-Raphson scheme and the derivatives of eigenvalues. The system left eigenvectors are used to simplify the calculations. Based on this approach, a general-purpose computer program was developed with a finite element model of rotor-bearing systems. The program automatically generates system equations and finds the critical speeds. The program is applied to analyze a turbomachine supported by two cylindrical oil-film Journal bearings. The results are compared with reported data and the agreements are very good.

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