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212
Jun 1, 2011
06/11
by
Agogino, Adria
texts
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The intelligent control of multiple autonomous agents is an important yet difficult task. Previous methods used to address this problem have proved to be either too brittle, too hard to use, or not scalable to large systems. The 'Collective Intelligence' project at NASA/Ames provides an elegant, machine-learning approach to address these problems. This approach mathematically defines some essential properties that a reward system should have to promote coordinated behavior among reinforcement...
Topics: SPACE STATION FREEDOM, DESIGN ANALYSIS, SPACECRAFT CONFIGURATIONS, CONFIGURATION MANAGEMENT, SPACE...
261
261
Jun 1, 2011
06/11
by
Oechsle, Victor L
texts
eye 261
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Rapid mixing of cold lateral jets with hot cross-stream flows in confined configurations is of practical interest in gas turbine combustors as it strongly affects combustor exit temperature quality, and gaseous emissions in for example rich-lean combustion. It is therefore important to further improve our fundamental understanding of the important processes of dilution jet mixing especially when the injected jet mass flow rate exceeds that of the cross-stream. The results reported in this...
Topics: SPACE STATION FREEDOM, TECHNOLOGY ASSESSMENT, LUNAR EXPLORATION, MARS EXPLORATION, CONFIGURATION...
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522
Jul 23, 2010
07/10
by
Tiffany, Sherwood H.; Adams, William M., Jr
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The approximation of unsteady generalized aerodynamic forces in the equations of motion of a flexible aircraft are discussed. Two methods of formulating these approximations are extended to include the same flexibility in constraining the approximations and the same methodology in optimizing nonlinear parameters as another currently used extended least-squares method. Optimal selection of nonlinear parameters is made in each of the three methods by use of the same nonlinear, nongradient...
Topics: ASTRONOMICAL OBSERVATORIES, LARGE DEPLOYABLE REFLECTOR, LARGE SPACE STRUCTURES, REFLECTORS, SPACE...
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236
May 29, 2011
05/11
by
Lissauer, Jack J
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eye 236
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The Earth is teeming with life, which, occupies a diverse array of environments; other bodies in our Solar System offer fewer, if any, niches which are habitable by life as we know it. Nonetheless, astronomical studies suggest that a large number of habitable planets-are likely to be present within our Galaxy.
Topics: TRANSIENT RESPONSE, LINEAR SYSTEMS, SPACE STATIONS, SPACE STATION STRUCTURES, STRUCTURAL...
A quick-connect fastener is arranged with a tubular body that is arranged to be engaged against the exterior surface of a hollow attachment fitting and coincidentally aligned with an opening in the fitting. A collet having normally-contracted fingers with outwardly-enlarged ends is operatively arranged in the body to be moved forwardly by an expander member mounted in the tubular body for advancing the collet fingers through the opening in the attachment fitting. Biasing means are arranged...
Topics: NASA Technical Reports Server (NTRS), BUSHINGS, CLAMPS, FASTENERS, SPACE STATION STRUCTURES,...
The Human Occupied Space Teleoperator (HOST) system currently under development utilizes a flexible tunnel/Stewart table structure to provide crew access to a pressurized manned work station or POD on the space station without extravehicular activity (EVA). The HOST structure facilitates moving a work station to multiple space station locations. The system has applications to orbiter docking, space station assembly, satellite servicing, space station maintenance, and logistics support. The...
Topics: NASA Technical Reports Server (NTRS), CREW WORKSTATIONS, EXTENSIONS, FLEXIBLE SPACECRAFT, MANNED...
The objectives are to develop a process for manufacturing superstrate assemblies; demonstrate superstrate technology through fabrication and testing; develop and analyze a preliminary solar array wing design; and fabricate a wing segment based on the wing design. The task description, project flow diagram, and schedule are outlined. The progress to date is presented.
Topics: NASA Technical Reports Server (NTRS), FABRICATION, SOLAR ARRAYS, SOLAR CELLS, SPACE STATION...
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219
Jun 1, 2011
06/11
by
Barnes, Robert H
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The tests reported herein were made for the purpose of determining the high-speed load distribution on the wing of a 3/16 scale model of the Douglas XSB2D-1 airplane. Comparisons are made between the root bending moment and section torsional moment coefficients as obtained experimentally and derived analytically. The results show good correlation for the bending moment coefficients but considerable disagreement for the torsional moment coefficients, the measured moments being greater than the...
Topics: SPACE STATION FREEDOM, SPACECRAFT DESIGN, SPACE STATION STRUCTURES, SPACE STATION MODULES,...
In early 1993, President Clinton mandated that NASA look at lower cost alternatives to Space Station Freedom. He also established an independent advisory committee - the Blue Ribbon Panel - to review the redesign work and evaluate alternatives. Daniel Goldin, NASA Administrator, established a Station Redesign Team that began operating in late March from Crystal City, Virginia. NASA intercenter teams - one each at Marshall Space Flight Center, Johnson Space Center, and Langley Research Center...
Topics: NASA Technical Reports Server (NTRS), COST REDUCTION, SPACE STATION FREEDOM, SPACECRAFT DESIGN,...
This report is the result of the Space Station Redesign Team's activity. Its purpose is to present without bias, and in appropriate detail, the characteristics and cost of three design and management approaches for the Space Station Freedom. It was presented to the Advisory Committee on the Redesign of the Space Station on 7 Jun. 1993, in Washington, D.C.
Topics: NASA Technical Reports Server (NTRS), COST ANALYSIS, MANAGEMENT METHODS, SPACE STATION FREEDOM,...
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208
Jul 25, 2010
07/10
by
Rebstock, Rainer; Lee, Edwin E., Jr
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An initial wind tunnel test was made to validate a new wall adaptation method for 3-D models in test sections with two adaptive walls. First part of the adaptation strategy is an on-line assessment of wall interference at the model position. The wall induced blockage was very small at all test conditions. Lift interference occurred at higher angles of attack with the walls set aerodynamically straight. The adaptation of the top and bottom tunnel walls is aimed at achieving a correctable flow...
Topics: COMPUTERIZED SIMULATION, TELEOPERATORS, MODULES, ORBITAL ASSEMBLY, PHOTOVOLTAIC CELLS, SPACE...
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247
Jul 26, 2010
07/10
by
Spreemann, Kenneth P.; Davenport, Edwin E
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No Abstract Available
Topics: LARGE DEPLOYABLE REFLECTOR, SYSTEMS ANALYSIS, WEIGHT REDUCTION, ORBITAL ASSEMBLY, ROBOTICS, SPACE...
This document reviews certain issues in relationship to the operation of the Space Station Freedom. The document is in outline format and includes some organizational hierarchy charts, pert charts and decision charts.
Topics: NASA Technical Reports Server (NTRS), SPACE STATION FREEDOM, SPACE STATION PAYLOADS, SPACE STATION...
613
613
May 29, 2011
05/11
by
Quinn, Robert D.; Gong, Lesli
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This report describes a method that can calculate transient aerodynamic heating and transient surface temperatures at supersonic and hypersonic speeds. This method can rapidly calculate temperature and heating rate time-histories for complete flight trajectories. Semi-empirical theories are used to calculate laminar and turbulent heat transfer coefficients and a procedure for estimating boundary-layer transition is included. Results from this method are compared with flight data from the X-15...
Topics: INTERNATIONAL SPACE STATION, EVOLUTION (DEVELOPMENT), SPACE COMMERCIALIZATION, SPACE STATION...
172
172
May 31, 2011
05/11
by
Johnson, W. S.; Saltysiak, Bethan
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Over the past five years there has been much excitement about the development of nanotubes and nanofibers and the potential that these materials may offer in enhancing electrical and mechanical properties of systems. The purpose of this paper is to present research into improving the mechanical performance of polymers by using nanofibers as a reinforcement to make high performance composite materials. This paper will present theoretical predictions of the composite modulus and then present the...
Topics: VARIABLE GEOMETRY STRUCTURES, FREIGHT COSTS, COST REDUCTION, ARCHITECTURE, TRUSSES, FOLDING...
Solar dynamic power generation has been selected by NASA to provide power for the space station. Solar dynamic concentrator technology has been demonstrated for terrestrial applications but has not been developed for space applications. The object of the Solar Concentrator Advanced Development program is to develop the technology of solar concentrators which would be used on the space station. The first task of this program was to develop conceptual concentrator designs and perform trade-off...
Topics: NASA Technical Reports Server (NTRS), CONCENTRATORS, SOLAR DYNAMIC POWER SYSTEMS, SPACE STATION...
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1.0K
Jul 12, 2010
07/10
by
NON
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Activities in space communication, radio navigation, radio science, and ground-based astronomy are reported. Advanced systems for the Deep Space Network and its Ground-Communications Facility are discussed including station control and system technology. Network sustaining as well as data and information systems are covered. Studies of geodynamics, investigations of the microwave spectrum, and the search for extraterrestrial intelligence are reported.
Topics: LARGE SPACE STRUCTURES, TECHNOLOGY UTILIZATION, TRUSSES, PROJECT MANAGEMENT, SCHEDULING, SPACE...
Rocketdyne plans to generate a system level specification for the Space Station Electric Power System (EPS) in order to facilitate the usage, accountability, and tracking of overall system level requirements. The origins and status of the verification planning effort are traced and an overview of the Space Station program interactions are provided. The work package level interfaces between the EPS and the other Space Station work packages are outlined. A trade study was performed to determine...
Topics: NASA Technical Reports Server (NTRS), EQUIPMENT SPECIFICATIONS, REQUIREMENTS, SPACE STATION POWER...
A system for coupling an orbital replacement unit (ORU) to a space station structure via the actions of a robot and/or astronaut is described. This system provides mechanical and electrical connections both between the ORU and the space station structure and between the ORU and the ORU and the robot/astronaut hand tool. Alignment and timing features ensure safe, sure handling and precision coupling. This includes a first female type spline connector selectively located on the space station...
Topics: NASA Technical Reports Server (NTRS), ELECTRIC CONNECTORS, END EFFECTORS, ORBITAL SERVICING, SPACE...
249
249
May 30, 2011
05/11
by
LeVine, D. M.; Jackson, T. J.; Swift, C. T.; Haken, M.; Bidwell, S
texts
eye 249
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During the Southern Great Plains experiment, the synthetic aperture radiometer, ESTAR, mapped L-band brightness temperature over a swath about 50 km wide and about 300 km long extending west from Oklahoma City to El Reno and north from the Little Washita River watershed to the Kansas border. ESTAR flew on the NASA P-3B Orion aircraft at an altitude of 7.6 km and maps were made on 7 days between July 8-20, 1999. The brightness temperature maps reflect the patterns of soil moisture expected from...
Topics: CONSTRUCTION, CONTAMINATION, ELECTRICAL MEASUREMENT, LIFE (DURABILITY), MICROMETEOROIDS, OXYGEN...
335
335
Sep 20, 2010
09/10
by
Craft, William; Klett, David; Lai, Steve
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The principle goal of the educational component of NASA CORE is the creation of aerospace engineering options in the mechanical engineering program at both the undergraduate and graduate levels. To accomplish this goal, a concerted effort during the past year has resulted in detailed plans for the initiation of aerospace options in both the BSME and MSME programs in the fall of 1993. All proposed new courses and the BSME aerospace option curriculum must undergo a lengthy approval process...
Topics: HYPERVELOCITY IMPACT, PROJECTILES, SPACE DEBRIS, SPACE STATION STRUCTURES, MONTE CARLO METHOD,...
In March of 1994, STS-62 carried the NASA Lewis Research Center's Solar Array Module Plasma Interactions Experiment (SAMPIE) into orbit, where it investigated the plasma current collected and the arcs from solar arrays and other space power materials immersed in the low-Earth-orbit space plasma. One of the important experiments conducted was the plasma current collected by a four-cell coupon sample of solar array cells for the international space station. The importance of this experiment dates...
Topics: NASA Technical Reports Server (NTRS), CONTACTORS, ELECTRICAL GROUNDING, INTERNATIONAL SPACE...
The task assigned to the Mission Planning and Analysis Division for FY89 was to produce a video tape depicting the assembly of a Mars Piloted Vehicle at a man tended vehicle assembly platform, co-orbiting with Space Station Freedom. This request was made by the Transportation Node Integration Agent of the Lunar/Mars Exploration Office. Along with the request, a data package was provided which contained the latest technical briefings by the Transportation Node and Space Transportation...
Topics: NASA Technical Reports Server (NTRS), VIDEO TAPES, MARS MISSIONS, ORBITAL ASSEMBLY, MISSION...
A method is described for naming the Space Station Freedom nodes and truss members that enhances the management, maintenance, and record keeping methods utilized by the space station.
Topics: NASA Technical Reports Server (NTRS), BAYS (STRUCTURAL UNITS), IDENTIFYING, SPACE STATION FREEDOM,...
Viewgraphs on structures for Space Station Freedom are presented. The structures subsystem, mechanical subsystem, and evolution issues are addressed.
Topics: NASA Technical Reports Server (NTRS), FUNCTIONAL DESIGN SPECIFICATIONS, SPACE STATION FREEDOM,...
NASA's Office of Aeronautics and Space Technology conducted a workshop on technology for space station evolution 16-19 Jan. 1990. The purpose of the workshop was to collect and clarify Space Station Freedom technology requirements for evolution and to describe technologies that can potentially fill those requirements. These proceedings are organized into an Executive Summary and Overview and five volumes containing the Technology Discipline Presentations. Volume 2 consists of the technology...
Topics: NASA Technical Reports Server (NTRS), AEROSPACE ENGINEERING, SPACE STATION FREEDOM, SPACE STATION...
Designing Space Station Freedom has given NASA many opportunities to develop expert systems that automate onboard operations of space based systems. One such development, TROUBLE 3, an expert system that was designed to automate the fault diagnostics of Space Station Freedom's electric power system is described. TROUBLE 3's design is complicated by the fact that Space Station Freedom's power system is evolving and changing. TROUBLE 3 has to be made flexible enough to handle changes with minimal...
Topics: NASA Technical Reports Server (NTRS), ERROR ANALYSIS, EXPERT SYSTEMS, SPACE STATION FREEDOM, SPACE...
The issues and recommendations of a conference on the Space Station are presented. The subjects are organized under three headings of: materials and processing in space, earth and ocean observations, and industrial services. One hundred and two issues and recommendations which resulted from the workskop are categorized for each discipline subpanel. Responses to these issues and recommendations are based on more than twenty interviews with highly qualified NASA personnel and represent the best...
Topics: NASA Technical Reports Server (NTRS), LARGE SPACE STRUCTURES, MICROGRAVITY, REMOTE SENSING, SPACE...
275
275
Jun 1, 2011
06/11
by
Whitcomb, Richard T
texts
eye 275
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An untwisted wing, which when unswept has an NACA 65-210 section, an aspect ratio of 9.0 and a taper ration of 2.5:1.0, has been tested with no sweep, and 30 deg and 45 deg of sweepback and sweepforward in conjunction with a typical fuselage at Mach numbers from 0.60 to 0.96 at angles of attack generally between -2 deg and 10 deg in the Langley 8-foot high-speed tunnel. Sweep was obtained by rotating the wing semispans about a point in the plane of symmetry. The normal-force, pitching-moment,...
Topics: SPACE STATION FREEDOM, SUPPORT SYSTEMS, SPACE TRANSPORTATION, ORBIT TRANSFER VEHICLES, ORBITAL...
The double lead spiral platen parallel jaw end effector is an extremely powerful, compact, and highly controllable end effector that represents a significant improvement in gripping force and efficiency over the LaRC Puma (LP) end effector. The spiral end effector is very simple in its design and has relatively few parts. The jaw openings are highly predictable and linear, making it an ideal candidate for remote control. The finger speed is within acceptable working limits and can be modified...
Topics: NASA Technical Reports Server (NTRS), END EFFECTORS, REMOTE CONTROL, ROBOTICS, SPACE STATION...
A proposed evolutionary growth scenario for Space Station Freedom was defined recently by a NASA task force created to study requirements for a Human Exploration Initiative. The study was an initial response to President Bush's July 20, 1989 proposal to begin a long range program of human exploration of space including a permanently manned lunar base and a manned mission to Mars. This growth scenario evolves Freedom into a critical transportation node to support lunar and Mars missions. The...
Topics: NASA Technical Reports Server (NTRS), DYNAMIC STRUCTURAL ANALYSIS, SPACE STATION FREEDOM, SPACE...
Viewgraphs on structures and materials technology discipline for Space Station Freedom are presented. Topics covered include: spacecraft materials; space construction; and structural dynamics.
Topics: NASA Technical Reports Server (NTRS), ORBITAL ASSEMBLY, SPACE STATION FREEDOM, SPACE STATION...
A series of light gas gun shots (4 to 7 km/sec) were performed with 5 mg nylon and aluminum projectiles to determine the size, mass, velocity, and spatial distribution of spall and ejecta from a number of graphite/epoxy targets. Similar determinations were also performed on a few aluminum targets. Target thickness and material were chosen to be representative of proposed Space Station structure. The data from these shots and other information were used to predict the hazard to Space Station...
Topics: NASA Technical Reports Server (NTRS), DAMAGE ASSESSMENT, IMPACT DAMAGE, IMPACT TESTS,...
This slide presentation reviews selected lessons that were learned during the design, development, assembly and operation of the International Space Station. The critical importance of standards and common interfaces is emphasized to create a common operation environment that can lead to flexibility and adaptability.
Topics: NASA Technical Reports Server (NTRS), INTERNATIONAL COOPERATION, INTERNATIONAL SPACE STATION,...
The responses to issues and questions raised at the Space Station Freedom Workshops are compiled. The findings are presented under broad divisions of general, materials processing in space, commercial earth and ocean observations, life sciences, infrastructure services, and infrastructure policy. The responses represent the best answers available at this time and future modifications may be expected. Contact names, telephone numbers, and organizations are included.
Topics: NASA Technical Reports Server (NTRS), LARGE SPACE STRUCTURES, LIFE SCIENCES, REMOTE SENSING, SPACE...
Tensegritoy, inspired by the tensegrity concepts of R. Buckminster Fuller, is an erector set like toy designed to give students an understanding of structural stability. It is used by children, architects, engineers, and teachers. The manufacturer, Tensegrity Systems Corporation, also offers a collapsible point of purchase display which incorporates technology developed for space station trusses described in "NASA Tech Briefs." The tech brief described deployable trusses that can be...
Topics: NASA Technical Reports Server (NTRS), VARIABLE GEOMETRY STRUCTURES, TRUSSES, FOLDING STRUCTURES,...
This viewgraph presentation explores scenarios in which the configuration of Space Station Freedom evolves to support lunar and Mars exploration. The document includes a Lunar Evolution Case Study Assessment and a Mars Evolution Case Study Assessment, as well as a Lunar/Mars Exploration Initiative Assessment and a Technology Needs Assessment.
Topics: NASA Technical Reports Server (NTRS), SPACE STATION FREEDOM, TECHNOLOGY ASSESSMENT, LUNAR...
545
545
Jul 12, 2010
07/10
by
Wojciechowski, C. J.; Kurzius, S. C.; Doktor, M. F
texts
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The design of a subscale jet engine driven ejector/diffuser system is examined. Analytical results and preliminary design drawings and plans are included. Previously developed performance prediction techniques are verified. A safety analysis is performed to determine the mechanism for detonation suppression.
Topics: ARCHITECTURE, SPACEBORNE EXPERIMENTS, SPACECRAFT COMMUNICATION, TECHNOLOGICAL FORECASTING,...
Viewgraphs and discussion on automated assembly of large space structures are presented. The program research objective is to develop technology and demonstrate the potential for automated inspace assembly of large erectable structures. This is accomplished by merging experience in structural assembly and robotics at LaRC into an interdisciplinary program with focused effort on automated assembly of a generic structural configuration with a standard cell and by building into the system the...
Topics: NASA Technical Reports Server (NTRS), LARGE SPACE STRUCTURES, ORBITAL ASSEMBLY, ROBOTICS, SPACE...
Structural performance of orthogonal tetrahedral and Warren-type full truss beams and platforms are compared. In addition, degradation of truss structural performance is determined for beams, platforms and a space station when individual struts are removed from the trusses. The truss beam, space station, and truss platform analytical models used in the studies are described. Stiffness degradation of the trusses due to single strut failures is determined using flexible body vibration modes. Ease...
Topics: NASA Technical Reports Server (NTRS), SPACE STATION STRUCTURES, SPACE STATIONS, STRUCTURAL FAILURE,...
One of the responsibilities of the Space Station Platform Management System (PMS) is to maintain constraint-free, short-term plans for platform and free-flyer activities. Both the replanning function and the associated constraint-checking function are viewed as potentially requiring expert system assistance. The PMS Resource Envelope Scheduling System (PRESS) expert system, which is currently under development, is described. The PRESS capabilities will include the following: plan, replan, and...
Topics: NASA Technical Reports Server (NTRS), ARTIFICIAL INTELLIGENCE, EXPERT SYSTEMS, RESOURCES...
Twenty-two papers are documented regarding aeronautical and spacecraft hardware. Technological areas include actuators, latches, cryogenic mechanisms, vacuum tribology, bearings, robotics, ground support equipment for aerospace applications, and other mechanisms.
Topics: NASA Technical Reports Server (NTRS), ACTUATORS, AEROSPACE ENGINEERING, CONFERENCES, CRYOGENICS,...
This document explains which countries and agencies participate in the development of Space Station Freedom, what the different structures on the station will be, and who is responsible for constructing them. The systems which will be operational in the baseline configuration of the station are listed, as is its assembly schedule. An overview of plans for space station evolution is also given.
Topics: NASA Technical Reports Server (NTRS), SPACE STATION FREEDOM, SPACECRAFT DESIGN, SPACE STATION...
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Aug 2, 2010
08/10
by
Huff, Dennis L
texts
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The unsteady flow field around an oscillating cascade of flat plates is studied using a time marching Euler code. Exact solutions based on linear theory serve as model problems to study pressure wave propagation in the numerical solution. The importance of using proper unsteady boundary conditions, grid resolution, and time step is demonstrated. Results show that an approximate non-reflecting boundary condition based on linear theory does a good job of minimizing reflections from the inflow and...
Topics: ARTIFICIAL INTELLIGENCE, DYNAMIC CONTROL, ELASTIC PROPERTIES, POSITIONING, SPACE STATION...
The large space structures technology development missions to be performed on an early manned space station was studied and defined and the resources needed and the design implications to an early space station to carry out these large space structures technology development missions were determined. Emphasis is being placed on more detail in mission designs and space station resource requirements.
Topics: NASA Technical Reports Server (NTRS), LARGE SPACE STRUCTURES, PROJECT MANAGEMENT, SCHEDULING, SPACE...
A docking mechanism is presented for the docking of a space vehicle to a space station comprising a flexible tunnel frame structure which is deployable from the space station. The tunnel structure comprises a plurality of series connected frame sections, one end section of which is attached to the space station and the other end attached to a docking module of a configuration adapted for docking in the payload bay of the space vehicle. The docking module is provided with trunnions, adapted for...
Topics: NASA Technical Reports Server (NTRS), ACTIVE CONTROL, FABRICS, NUMERICAL CONTROL, SPACE STATION...
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374
Sep 20, 2010
09/10
by
NON
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NASA administrative and organizational information is presented along with summaries of space flight activity including the NASA Major Launch Record, and NASA procurement, financial and manpower data. The Major Launch Record includes all launches of Scout class and larger vehicles. Vehicle and spacecraft development flights are also included. Shuttle missions are counted as one launch and one payload, where free flying payloads are not involved. Satellites deployed from the cargo bay of the...
Topics: DYNAMIC STRUCTURAL ANALYSIS, MODAL RESPONSE, NASTRAN, NONLINEARITY, PERTURBATION THEORY,...
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Jul 23, 2010
07/10
by
NON
texts
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The research interests of the staff of the Fluid Dynamics Research Branch in the general area of vortex flows are summarized. A major factor in the development of enchanced maneuverability and reduced drag by aerodynamic means is the use of effective vortex control devices. The key to control is the use of emerging computational tools for predicting viscous fluid flow in close coordination with fundamental experiments. In fact, the extremely complex flow fields resulting from numerical...
Topics: COOLING FINS, ALUMINUM, METHYL ALCOHOL, SPACE STATIONS, SPACECRAFT CONSTRUCTION MATERIALS,...
436
436
Jul 26, 2010
07/10
by
Speas, K. J
texts
eye 436
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No Abstract Available
Topics: ORBIT TRANSFER VEHICLES, PROPULSION SYSTEM CONFIGURATIONS, SPACE BASES, SPACE STATION STRUCTURES,...
A concept is described for the assembly of the outboard PV modules for Space Station Freedom. Analysis of the on-orbit assembly operations was performed using CADAM design graphics software. A scenario for assembly using the various assembly equipment, as currently defined, is described in words, tables and illustrations. This work is part of ongoing studies in the area of space station assembly. The outboard PV module and the assembly equipment programs are all in definition and preliminary...
Topics: NASA Technical Reports Server (NTRS), COMPUTERIZED SIMULATION, MODULES, ORBITAL ASSEMBLY,...
