TRW SPACE TECHNOLOGY LABS REDONDO BEACH CA
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Works:  42 works in 45 publications in 1 language and 45 library holdings 

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TRW SPACE TECHNOLOGY LABS REDONDO BEACH CA
DYNAMIC MEASUREMENTS OF PROTECTIVE MASKS(
Book
)
2 editions published in 1963 in English and held by 2 WorldCat member libraries worldwide
The objective of this contract is to develop and produce an electro mechanical system capable of detecting, measuring in a linear manner, and recording rapidly changing air pressure inside of and airflow through the protective mask during mask wearing by soldiers under dynamic operating conditions
2 editions published in 1963 in English and held by 2 WorldCat member libraries worldwide
The objective of this contract is to develop and produce an electro mechanical system capable of detecting, measuring in a linear manner, and recording rapidly changing air pressure inside of and airflow through the protective mask during mask wearing by soldiers under dynamic operating conditions
Spacecraft shock environment induced by nose fairing separation pyrotechnics(
Book
)
1 edition published in 1963 in English and held by 1 WorldCat member library worldwide
This report presents the results and the methods used to determine the shock levels, and the fragility of selected critical components parts and spacecraft subassemblies during full scale, 823 Spacecraft, NoseFairing Separation Tests under simulated altitude conditions. Eight spacecraft subassemblies were tested. Of these eight subassemblies, two were monitored for transient malfunctions during the separation tests, and six to determine if permanent damage would occur. There were no indications of transient malfunctions or permanent damage to any of the eight subassemblies as a result of these tests. A total of 51 component parts were subjected to the separation shock. Of these component parts, five sustained physical damage of which three could be considered as potential sources of system malfunction. (Author)
1 edition published in 1963 in English and held by 1 WorldCat member library worldwide
This report presents the results and the methods used to determine the shock levels, and the fragility of selected critical components parts and spacecraft subassemblies during full scale, 823 Spacecraft, NoseFairing Separation Tests under simulated altitude conditions. Eight spacecraft subassemblies were tested. Of these eight subassemblies, two were monitored for transient malfunctions during the separation tests, and six to determine if permanent damage would occur. There were no indications of transient malfunctions or permanent damage to any of the eight subassemblies as a result of these tests. A total of 51 component parts were subjected to the separation shock. Of these component parts, five sustained physical damage of which three could be considered as potential sources of system malfunction. (Author)
Digital computer program for general missile dynamics simulation (nstage) summary of equations(
Book
)
1 edition published in 1961 in English and held by 1 WorldCat member library worldwide
This report presents a summary of the mathematical equations contained in the NSTAGE missile simulation program. This program, written for the IBM 7090 digital computer, is designed to be a flexible, high speed computation tool, useful for guidance system analysis, trajectory design, hardware evaluation, or postflight analysis of any current or proposed missile system. The simulation is generally complete and in most instances accuracy will be limited only by the accuracy of the input data
1 edition published in 1961 in English and held by 1 WorldCat member library worldwide
This report presents a summary of the mathematical equations contained in the NSTAGE missile simulation program. This program, written for the IBM 7090 digital computer, is designed to be a flexible, high speed computation tool, useful for guidance system analysis, trajectory design, hardware evaluation, or postflight analysis of any current or proposed missile system. The simulation is generally complete and in most instances accuracy will be limited only by the accuracy of the input data
Satellite Interception System Feasibility Study. Volume 1(
Book
)
1 edition published in 1963 in English and held by 1 WorldCat member library worldwide
This is the final report of an Antisatellite System Feasibility Study sponsored by the Advanced Research Projects Agency under Contract SD177. The contract performance period extended from 30 April to 31 October 1963. The study concerned the feasibility of using homing stages boosted by ICBM/IRBM launch vehicles to achieve satellite kill by nonnuclear means. The study concluded that, subject to the practical solution of the number of technical problems, the approach studied is feasible. (Author)
1 edition published in 1963 in English and held by 1 WorldCat member library worldwide
This is the final report of an Antisatellite System Feasibility Study sponsored by the Advanced Research Projects Agency under Contract SD177. The contract performance period extended from 30 April to 31 October 1963. The study concerned the feasibility of using homing stages boosted by ICBM/IRBM launch vehicles to achieve satellite kill by nonnuclear means. The study concluded that, subject to the practical solution of the number of technical problems, the approach studied is feasible. (Author)
ESPOD MATHEMATICAL AND SUBROUTINE DESCRIPTION(
Book
)
1 edition published in 1964 in English and held by 1 WorldCat member library worldwide
The primary function of this report is to provide the specialist in the field an indepth treatment of the mathematical and related computer processes used to develop the ESPOD program. Secondarily, it is arranged to include the fundamental organization of the program, the background and general information relative to its options and the computer subroutines and coordinate systems. For an abridged technical discussion of ESPOD it is recommended that ESDTDR64393 (AD602 108), ESPOD Functional Description, be consulted. The analystoperator requiring operational information should consult ESDTDR64394 (AD602 064), ESPOD Operating Instructions and Card Formats
1 edition published in 1964 in English and held by 1 WorldCat member library worldwide
The primary function of this report is to provide the specialist in the field an indepth treatment of the mathematical and related computer processes used to develop the ESPOD program. Secondarily, it is arranged to include the fundamental organization of the program, the background and general information relative to its options and the computer subroutines and coordinate systems. For an abridged technical discussion of ESPOD it is recommended that ESDTDR64393 (AD602 108), ESPOD Functional Description, be consulted. The analystoperator requiring operational information should consult ESDTDR64394 (AD602 064), ESPOD Operating Instructions and Card Formats
Sequential life tests with piecewise constant failure rates(
Book
)
1 edition published in 1963 in English and held by 1 WorldCat member library worldwide
Sequential life testing involving the Wald sequential probability ratio test (SPR) has been widely developed for the exponential case. In the present paper the SPR ideas for the exponential case is extended to include testing of hypotheses in which and its alternatives change value a finite number of times during the test. The operating characteristic functions and the average time to termination of the test are derived. Additionally, SPR tests are derived for the normal and Weibull distributions. The OC function and the average time to termination of the test in these cases are approximated by applying the previous results, and assuming that the failure function, (t), of these distributions may be approximated in a finite number of intervals in which the failure rate is constant. Replacement and nonreplacement of items are treated. Two numerical examples illustrate the theory. (Author)
1 edition published in 1963 in English and held by 1 WorldCat member library worldwide
Sequential life testing involving the Wald sequential probability ratio test (SPR) has been widely developed for the exponential case. In the present paper the SPR ideas for the exponential case is extended to include testing of hypotheses in which and its alternatives change value a finite number of times during the test. The operating characteristic functions and the average time to termination of the test are derived. Additionally, SPR tests are derived for the normal and Weibull distributions. The OC function and the average time to termination of the test in these cases are approximated by applying the previous results, and assuming that the failure function, (t), of these distributions may be approximated in a finite number of intervals in which the failure rate is constant. Replacement and nonreplacement of items are treated. Two numerical examples illustrate the theory. (Author)
BACKSCATTER FROM INHOMOGENEOUS MEDIA(
)
1 edition published in 1962 in English and held by 0 WorldCat member libraries worldwide
A WKB approximation is used to calculate cross sections for the 180 degree scattering of scalar and vector waves by a class of spherically symmetric, repulsive potentials. These potentials are such that the corresponding index of refraction has a unique zero. The scalar problem is discussed in the framework of quantum mechanics, and the result is just the classical cross section. Electromagnetic backscatter from a dielectric is found to be threequarters of the scalar approximation in the extreme geometricaloptics limit
1 edition published in 1962 in English and held by 0 WorldCat member libraries worldwide
A WKB approximation is used to calculate cross sections for the 180 degree scattering of scalar and vector waves by a class of spherically symmetric, repulsive potentials. These potentials are such that the corresponding index of refraction has a unique zero. The scalar problem is discussed in the framework of quantum mechanics, and the result is just the classical cross section. Electromagnetic backscatter from a dielectric is found to be threequarters of the scalar approximation in the extreme geometricaloptics limit
Improved Analytic Longitudinal Response Analysis for Axisymmetric Launch Vehicles. Volume 2: Computer Program Description(
)
1 edition published in 1965 in English and held by 0 WorldCat member libraries worldwide
This program uses an improved linear analytical model for the calculation of launch vehicle steady state response to applied sinusoidal loads acting in the longitudinal direction. The present approach utilizes a finite element technique to construct the total launch vehicle stiffness [K] and mass [M] characteristics by subdividing the prototype structure into a consistent set of (1) axisymmetric shell components a1 to represent as separate units the fairing, interstage structure, bulkhead, tank walls and engine thrust structure; (2) fluid components b1 and (3) massspring components c1 to provide the inertial and stiffness characteristics of the equipment and engines and vehicle supporting structure. The total vehicle characteristics are obtained by superposition of the stiffness and inertial characteristics of the individual shell, fluid and mass spring components which are computed using a generalized coordinate approach. Fluid force and inertial coupling between all structural components is accomplished by assuming fluid motions consistent with the shell component distortions. The superposition technique automatically assures displacement compatibility and satisfies force equilibrium at the joints between components. After the complete system matrix bas been formulated, displacement boundary conditions are introduced by removing appropriate rows and columns of matrix coefficients corresponding to points on the vehicle and its supports which are rigidly restrained from motion
1 edition published in 1965 in English and held by 0 WorldCat member libraries worldwide
This program uses an improved linear analytical model for the calculation of launch vehicle steady state response to applied sinusoidal loads acting in the longitudinal direction. The present approach utilizes a finite element technique to construct the total launch vehicle stiffness [K] and mass [M] characteristics by subdividing the prototype structure into a consistent set of (1) axisymmetric shell components a1 to represent as separate units the fairing, interstage structure, bulkhead, tank walls and engine thrust structure; (2) fluid components b1 and (3) massspring components c1 to provide the inertial and stiffness characteristics of the equipment and engines and vehicle supporting structure. The total vehicle characteristics are obtained by superposition of the stiffness and inertial characteristics of the individual shell, fluid and mass spring components which are computed using a generalized coordinate approach. Fluid force and inertial coupling between all structural components is accomplished by assuming fluid motions consistent with the shell component distortions. The superposition technique automatically assures displacement compatibility and satisfies force equilibrium at the joints between components. After the complete system matrix bas been formulated, displacement boundary conditions are introduced by removing appropriate rows and columns of matrix coefficients corresponding to points on the vehicle and its supports which are rigidly restrained from motion
A THEOREM ON ELECTROMAGNETIC BACKSCATTER(
)
1 edition published in 1962 in English and held by 0 WorldCat member libraries worldwide
1 edition published in 1962 in English and held by 0 WorldCat member libraries worldwide
RELATIVISTIC CORRECTIONS TO DOPPLER MEASUREMENTS(
)
1 edition published in 1962 in English and held by 0 WorldCat member libraries worldwide
1 edition published in 1962 in English and held by 0 WorldCat member libraries worldwide
INVISCID HYPERSONIC FLOW FOR POWERLAW SHOCK WAVES(
)
1 edition published in 1963 in English and held by 0 WorldCat member libraries worldwide
The blast wave solutions for the axisymmetric flow fields associated with a family of power law shocks, y sub s equals approximately x to the n power, were modified to properly account for the entropy layer near the surface of the body. The method of inner and outer expansions was used. It was shown that this method is of limited usefulness for n only slightly greater than 1/2 due to the slow convergence of the inner expansions, but for (gamma 2)/(3 gamma 2) less than or equal to n <1 the expansions converge rapidly enough for the method to be useful. The case n 1/2 is singular and causes no difficulty. In the range (gamma 1) /(2 gamma 1) less than or equal to n<1 the body shape given by blast wave theory is correct, but the blast wave flow profiles must be modified near the body
1 edition published in 1963 in English and held by 0 WorldCat member libraries worldwide
The blast wave solutions for the axisymmetric flow fields associated with a family of power law shocks, y sub s equals approximately x to the n power, were modified to properly account for the entropy layer near the surface of the body. The method of inner and outer expansions was used. It was shown that this method is of limited usefulness for n only slightly greater than 1/2 due to the slow convergence of the inner expansions, but for (gamma 2)/(3 gamma 2) less than or equal to n <1 the expansions converge rapidly enough for the method to be useful. The case n 1/2 is singular and causes no difficulty. In the range (gamma 1) /(2 gamma 1) less than or equal to n<1 the body shape given by blast wave theory is correct, but the blast wave flow profiles must be modified near the body
The development of reciprocity procedures for utilizing data from underground explosion tests by
Y. C Fung(
)
1 edition published in 1963 in English and held by 0 WorldCat member libraries worldwide
A procedure for predicting underground cavity motions resulting from surface airblast loading is developed on the basis of a dynamicreciprocity principle for a nonhomogeneous, anisotropic, linear, viscoelastic half space. A computer program for evaluating the integral equations for this medium is presented. Experimental measurements from the RAINIER Event of Operation PLUMBBOB are used to postulate cavity motions arising from a surface burst at the RAINIER site. The effects of variations in the cavity pressure signature, number of measured ground motions, and instrumentation errors are examined. Recommendations are made for experimental programs to obtain needed additional data, and, in general, to ascertain the applicability of the reciprocity to soils
1 edition published in 1963 in English and held by 0 WorldCat member libraries worldwide
A procedure for predicting underground cavity motions resulting from surface airblast loading is developed on the basis of a dynamicreciprocity principle for a nonhomogeneous, anisotropic, linear, viscoelastic half space. A computer program for evaluating the integral equations for this medium is presented. Experimental measurements from the RAINIER Event of Operation PLUMBBOB are used to postulate cavity motions arising from a surface burst at the RAINIER site. The effects of variations in the cavity pressure signature, number of measured ground motions, and instrumentation errors are examined. Recommendations are made for experimental programs to obtain needed additional data, and, in general, to ascertain the applicability of the reciprocity to soils
Investigation of diplexing transducers for voice communications by Alan Dale Bredon(
)
1 edition published in 1963 in English and held by 0 WorldCat member libraries worldwide
1 edition published in 1963 in English and held by 0 WorldCat member libraries worldwide
LOSS OF STABILITY OF THIN ELASTIC SHELLS UNDER THE EFFECT OF IMPULSIVE LOADS(
)
1 edition published in 1963 in English and held by 0 WorldCat member libraries worldwide
The problem of the stability of a cylindrical panel resting on a rectangular boundary, under the effect of a normal impulse which is characterized by a rapid increase in load to a certain magnitude and subsequent decrease according to the exponential law is discussed. The main objective is to construct a range of parameters which characterizes this impulse and in the presence of which snapthrough buckling of the shell does not occur (i.e., stability 'in the large'). The effect of the initial compression and damping decrements on the boundary of the stability region, as well as on the maximum deflections attainable under the effect of the impulse were investigated. Partial differential equations of the nonlinear shell theory are, by applying the PapkovichGalerkin method, reduced to nonlinear ordinary differential equations and solved on continuouslyacting analog computers (the MN7 computer was used)
1 edition published in 1963 in English and held by 0 WorldCat member libraries worldwide
The problem of the stability of a cylindrical panel resting on a rectangular boundary, under the effect of a normal impulse which is characterized by a rapid increase in load to a certain magnitude and subsequent decrease according to the exponential law is discussed. The main objective is to construct a range of parameters which characterizes this impulse and in the presence of which snapthrough buckling of the shell does not occur (i.e., stability 'in the large'). The effect of the initial compression and damping decrements on the boundary of the stability region, as well as on the maximum deflections attainable under the effect of the impulse were investigated. Partial differential equations of the nonlinear shell theory are, by applying the PapkovichGalerkin method, reduced to nonlinear ordinary differential equations and solved on continuouslyacting analog computers (the MN7 computer was used)
Method of preserving frozen food during an aerospace mission by Robert R Reddy(
)
1 edition published in 1963 in English and held by 0 WorldCat member libraries worldwide
Analyses of three nonelectrical methods for maintaining frozen foods between 10 F and 5 F during aerospace missions of 1 to 28 days are presented. The methods considered are: (1) a heat sink, (2) active refrigeration, and (3) radiation cooling. All method appear feasible. The heat sink method appears to be the simplest and most reliable. A design study of a heat sink system for a 3man, 14day mission is included
1 edition published in 1963 in English and held by 0 WorldCat member libraries worldwide
Analyses of three nonelectrical methods for maintaining frozen foods between 10 F and 5 F during aerospace missions of 1 to 28 days are presented. The methods considered are: (1) a heat sink, (2) active refrigeration, and (3) radiation cooling. All method appear feasible. The heat sink method appears to be the simplest and most reliable. A design study of a heat sink system for a 3man, 14day mission is included
OPERATIONS RESEARCH STUDY OF COMMAND AND CONTROL TRADEOFFS IN AN AMPHIBIOUS ENVIRONMENT(
)
1 edition published in 1963 in English and held by 0 WorldCat member libraries worldwide
This study demonstrates the use of analytical techniques to quantitatively describe the interrelationships between mobility, dispersion, surveillance, and fire power as they affect the survival of tactical units on the battlefield. The purpose of such a study was to emphasize the possible use of analytical models to explore areas of Marine Corps/Navy advanced warfare military systems and operations in which outputs obtained from such analyses could lead, by implication, to recommendations for requirements for surveillance, fire power, force size, logistics, and command and control subsystems. The basic problem analyzed in this study can be summarized as follows: An amphibious landing force x, at sea, is to assault a limited area defended by a force y. The landing force x is to be split up into an air mobile force x sub a and a surface mobile force x sub s. The defending y, in turn, commits its forces by allocating part of y, beta sub 1 y, in defense of the beach and the remaining force, beta sub 2 y, to defend against the air mobile attack
1 edition published in 1963 in English and held by 0 WorldCat member libraries worldwide
This study demonstrates the use of analytical techniques to quantitatively describe the interrelationships between mobility, dispersion, surveillance, and fire power as they affect the survival of tactical units on the battlefield. The purpose of such a study was to emphasize the possible use of analytical models to explore areas of Marine Corps/Navy advanced warfare military systems and operations in which outputs obtained from such analyses could lead, by implication, to recommendations for requirements for surveillance, fire power, force size, logistics, and command and control subsystems. The basic problem analyzed in this study can be summarized as follows: An amphibious landing force x, at sea, is to assault a limited area defended by a force y. The landing force x is to be split up into an air mobile force x sub a and a surface mobile force x sub s. The defending y, in turn, commits its forces by allocating part of y, beta sub 1 y, in defense of the beach and the remaining force, beta sub 2 y, to defend against the air mobile attack
LIQUID LASER RESEARCH(
)
2 editions published between 1962 and 1963 in English and held by 0 WorldCat member libraries worldwide
Recent theoretical considerations indicate that low temperatures may greatly increase the possibility of observing stimulated emission for such compounds as benzophenone. Experiments on rigid solutions of benzophenone in EPA (ether, isopentane and ethyl alcohol in the volume ratio 5:5:2) were continued. On the preparative side a number of new plastic systems were made. Optical quality rods of crosslinked polymethyl methacrylate containing benzophenone, naphthalene and benzophenone/naphthalene mixtures at several concentrations were prepared. Experiments on incorporating organic rareearth chelates into plastics were continued. The europium chelate of orthohydroxy benzophenone was synthesised
2 editions published between 1962 and 1963 in English and held by 0 WorldCat member libraries worldwide
Recent theoretical considerations indicate that low temperatures may greatly increase the possibility of observing stimulated emission for such compounds as benzophenone. Experiments on rigid solutions of benzophenone in EPA (ether, isopentane and ethyl alcohol in the volume ratio 5:5:2) were continued. On the preparative side a number of new plastic systems were made. Optical quality rods of crosslinked polymethyl methacrylate containing benzophenone, naphthalene and benzophenone/naphthalene mixtures at several concentrations were prepared. Experiments on incorporating organic rareearth chelates into plastics were continued. The europium chelate of orthohydroxy benzophenone was synthesised
SPECIFICATION DESIGN STUDY FOR FLIGHT TESTING INERTIAL GUIDANCE SYSTEMS GEM (GUIDANCE EVALUATION MISSILE)(
)
2 editions published in 1962 in English and held by 0 WorldCat member libraries worldwide
2 editions published in 1962 in English and held by 0 WorldCat member libraries worldwide
MINUTEMAN WING I ENVIRONMENTAL CONTROL SYSTEM RELIABILITY ANALYSIS REPORT(
)
1 edition published in 1962 in English and held by 0 WorldCat member libraries worldwide
An evaluation of environmental control system reliability data for Air Force Minuteman Wing I is presented. The data submitted by American Air Filter Co., are found to be a fair estimate of mean time between failures (MTBF), although modifying factors were not always applied. The data supplied by Holladay and Westcott were found to be unrealistic, mainly because not all sources of data were considered. Recommendations for system upgrading are made by STL for future wings of the Minuteman Program. These recommendations include such things as over design allowances, redundancy, use of best equipment, complete failure reporting, and use of modifying factors for correct determination of MTBF
1 edition published in 1962 in English and held by 0 WorldCat member libraries worldwide
An evaluation of environmental control system reliability data for Air Force Minuteman Wing I is presented. The data submitted by American Air Filter Co., are found to be a fair estimate of mean time between failures (MTBF), although modifying factors were not always applied. The data supplied by Holladay and Westcott were found to be unrealistic, mainly because not all sources of data were considered. Recommendations for system upgrading are made by STL for future wings of the Minuteman Program. These recommendations include such things as over design allowances, redundancy, use of best equipment, complete failure reporting, and use of modifying factors for correct determination of MTBF
ERROR ANALYSIS OF THE LINEARIZED METHOD OF CHARACTERISTICS FOR NONEQUILIBRIUM FLOW(
)
1 edition published in 1962 in English and held by 0 WorldCat member libraries worldwide
The pressure on an infinite sinusoidal wall in steady twodimensional supersonic flow of an inviscid gas in vibrational or chemical nonequilibrium is obtained by the linearized method of characteristics and compared to the analytical solution of the linearized equations previously obtained by Vincenti. The system of ''frozen'' characteristics is used. At near equilibrium conditions the error in the method of characteristics is due entirely to the error in integrating the rate equation along the streamlines and can be made arbitrarily small by decreasing the size of the characteristic net. There appears to be no approximate criteria for reducing the error at nearequilibrium conditions by switching over to the system of equilibrium characteristics which are applicable to the entire flow field
1 edition published in 1962 in English and held by 0 WorldCat member libraries worldwide
The pressure on an infinite sinusoidal wall in steady twodimensional supersonic flow of an inviscid gas in vibrational or chemical nonequilibrium is obtained by the linearized method of characteristics and compared to the analytical solution of the linearized equations previously obtained by Vincenti. The system of ''frozen'' characteristics is used. At near equilibrium conditions the error in the method of characteristics is due entirely to the error in integrating the rate equation along the streamlines and can be made arbitrarily small by decreasing the size of the characteristic net. There appears to be no approximate criteria for reducing the error at nearequilibrium conditions by switching over to the system of equilibrium characteristics which are applicable to the entire flow field
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