| Reusable Launch Vehicle Design Implications for Regeneration Time |
Mar-2009 |
88 pages |
| Authors:
Carlos A Molina; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
 | In last few years the Air Force Research Laboratory sponsored several research projects on Reusable Launch Vehicles (RLV) whose design, operation, and logistics requirements are intended to be much simpler than the Space Shuttle. Previous researchers developed a model that simulated the post-landing, ground maintenance and prelaunch operations of a RLV in order to evaluate how its design parameters affect the logistics operations. However, the next step was to investigate ... |
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| Defense Systems Modernization and Sustainment Initiative |
21-Jul-2008 |
67 pages |
| Authors:
Nabil Nasr; Edward McCarthy; Michael Haselkorn; Michael Thurston; Brian Duddy; ROCHESTER INST OF TECH NY NATIONAL CENTER FOR REMANUFACTURING AND RESOURCE RECOVERY
|
| The National Center for Remanufacturing and Resource Recovery (NC3R) at the Center for Integrated Manufacturing Studies (CIMS) at Rochester Institute of Technology has successfully researched and demonstrated technologies that are able to enhance the performance of defense weapons and support systems, while managing total life-cycle costs. The program areas supported by this ONR grant were Asset Health Management (AHM), Life-cycle Engineering and Economic Decision Systems (LEEDS), Material Aging, and Modernization ... |
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| Modeling and Simulation Resource Reuse Business Model |
13-Mar-2008 |
|
| Authors:
Dennis P Shea; CENTER FOR NAVAL ANALYSES ALEXANDRIA VA
|
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| Process Time Refinement for Reusable Launch Vehicle Regeneration Modeling |
MAR 2008 |
188 pages |
| Authors:
Joseph A. Servidio; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH DEPT OF SYSTEMS AND ENGINEERING MANAGEMENT
|
| To sustain operational effectiveness, the Air Force has invested in the research and development of space-based technologies. Certain ongoing spacelift research efforts are focused on developing operationally responsive Reusable Military Launch Vehicles (RMLV) capable of launching payloads into orbit within hours of a tasking notification. Previous Air Force Research Laboratory-sponsored AFIT studies have resulted in the development of the MILEPOST discrete-event simulation model. This model has enabled the ability to ... |
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| Development of the F-22 Canopy Container, CNU-692/E |
27 FEB 2008 |
42 pages |
| Authors:
Joel A. Sullivan; Susan J. Evans; AIR FORCE PACKAGING TECHNOLOGY AND ENGINEERING FACILITY WRIGHT-PATTERSON AFB OH
|
| The Air Force Packaging Technology Engineering Facility (AFPTEF) was tasked with the design of a new shipping and storage container for the F-22 Canopy in August of 2006. The new container is designed to replace the wood crate currently used. The current container provides minimal shock protection and no environmental protection against corrosion. Additionally, the wood crate is bulky and very difficult to maneuver. AFPTEF used proven design techniques to ... |
|
| Development of the MQ-9 Reaper Engine Container, CNU-696/E |
12 FEB 2008 |
64 pages |
| Authors:
Joel A. Sullivan; Susan J. Evans; AIR FORCE PACKAGING TECHNOLOGY AND ENGINEERING FACILITY WRIGHT-PATTERSON AFB OH
|
| The Air Force Packaging Technology Engineering Facility (AFPTEF) was tasked with the design of a new shipping and storage container for the MQ-9 Reaper Engine in March of 2006. The new container is designed to replace the fiberboard box currently used. The current container is not reusable and provides minimal shock protection and no environmental protection against corrosion. Additionally, the fiberboard box can not house the engine in the Quick ... |
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| Reusable Military Launch Systems (RMLS) |
FEB 2008 |
107 pages |
| Authors:
Gregory E. Moster; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH AIR VEHICLES DIRECTORATE
|
| The Air Force Research Laboratory (AFRL) has developed a design environment (IPAT) and approaches to assess the performance and operational capabilities of reusable launch systems in collaboration with the NASA and industry. This approach uses the AML design environment with parametric geometry modeling. This approach has been used successfully and resulted in the Rocket Boost-Back concept under development by AFRL and SMC under the FAST ground experiment program. The RMLS ... |
|
| DRMS World, Volume 33, Number 4, Fall 2008 |
01-Jan-2008 |
29 pages |
| Authors:
Twila C Gonzales; DEFENSE REUTILIZATION AND MARKETING SERVICE BATTLE CREEK MI
|
| I want to talk about a part of our mission that is so central to our efforts that it sometimes is taken for granted: REUTILIZATION. You can't have DRMS without reutilization. It is at the heart of what we do. But when we talk to the public, our family or friends and say, "I work for the Defense Reutilization and Marketing Service," we get blank looks, followed by "What is ... |
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| DRMS World, July/August 2007 |
AUG 2007 |
32 pages |
| Authors:
DEFENSE REUTILIZATION AND MARKETING SERVICE BATTLE CREEK MI
|
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| Determination of Effective Recombination Probability: Detailed Aspects of a Macroscopic Methodology |
01 JUL 2007 |
47 pages |
| Authors:
P. Rini; G. Degrez; UNIVERSITE LIBRE DE BRUXELLES (BELGIUM)
|
| The purpose of the present Lecture Series is to provide an up-to-date review of the experimental techniques, the theoretical models, as well as the numerical simulation strategies involved in the treatment of the chemical character of high temperatures gases. To this end, aspects of both materials and high temperatures uid sciences are discussed together, with the aim of enhancing the improvements in the understanding of the processes of heat release ... |
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| DRMS World, April/May 2007 |
MAY 2007 |
16 pages |
| Authors:
DEFENSE REUTILIZATION AND MARKETING SERVICE BATTLE CREEK MI
|
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| Decks for Rapid Runway Mat Application (Postprint) |
APR 2007 |
25 pages |
| Authors:
Dean C. Foster; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING DIRECTORATE
|
| Since the 1960s the Air Force has employed an aluminum matting system, AM-2, for rapid aircraft parking ramp expansion (RPRE) in austere environments. While functional and durable, AM-2 is heavy and cumbersome to install. The restrictive weight of AM-2 and its tedious installation complicate the process of deploying aircraft. The Air Force Research laboratory (AFRL) is developing an AM-2 alternative made from composite materials. This next generation matting system, AM-X, ... |
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| Demonstration and Analysis of Reusable Launch Vehicle Operations |
AUG 2006 |
39 pages |
| Authors:
John Garvey; GARVEY SPACECRAFT CORP LONG BEACH CA
|
| Report developed under SBIR contract for topic AF05-201. The increased use of reusable systems continues to be one of the most promising options for creating advancements in the daily maintenance of rocket systems, lowering hours for preparation and diminishing expenses for preparation. However, since the end of the DC-X/XA Delta Clipper program, flight testing of candidate reusable launch vehicle (RLV) designs, technologies and operations has come to a halt. This ... |
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| RLV Flight Operations Demonstration with a Prototype Nanosat Launch Vehicle |
12 JUL 2006 |
17 pages |
| Authors:
John M. Garvey; Eric Besnard; GARVEY SPACECRAFT CORP LONG BEACH CA
|
| Actual flight-based test and evaluation of vertical take-off reusable launch vehicles (RLVs) has been dormant in the U.S. since the end of the SDIO/NASA/McDonnell Douglas Delta Clipper - Experimental Advanced (DC-X/XA) project in 1996. A joint industry-academic team working under sponsorship from the Air Force Research Laboratory's Propulsion Directorate took a small step in 2005 towards re-invigorating such RLV test and evaluation activities, using an early, low-fidelity prototype of the ... |
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| RLV Flight Operations Demonstration with a Prototype Nanosat Launch Vehicle (PREPRINT) |
01 JUN 2006 |
17 pages |
| Authors:
John M. Garvey; Eric Besnard; GARVEY SPACECRAFT CORP LONG BEACH CA
|
| Actual flight-based test and evaluation of vertical take-off reusable launch vehicles (RLVs) has been dormant in the U.S. since the end of the SDIO/NASA/McDonnell Douglas Delta Clipper - Experimental Advanced (DC-X/XA) project in 1996. A joint industry-academic team working under sponsorship from the Air Force Research Laboratory's Propulsion Directorate took a small step in 2005 towards reinvigorating such RLV test and evaluation activities, using an early, low-fidelity prototype of the ... |
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| Responsive Payload Accommodations and Integration Operations for Dedicated CubeSat Missions (POSTPRINT) |
13 APR 2006 |
11 pages |
| Authors:
John M. Garvey; Lori Brooks; Jordi Puig-Suari; GARVEY SPACECRAFT CORP LONG BEACH CA
|
| A key factor for responsive space operations is the availability of standardized payload accommodations that can simplify integration tasks and reduce costs. Several such standards are beginning to emerge in the very small end of the payload market that is characterized by the so-called CubeSat class of spacecraft. These also happen to be compatible with proposed nanosat launch vehicle (NLV) concepts that are intended to enable dedicated CubeSat missions that ... |
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| Discrete Event Simulation Model of the Ground Maintenance Operations Cycle of a Reusable Launch Vehicle |
MAR 2006 |
249 pages |
| Authors:
John T. Pope III; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| The Air Force uses a family of expendable launch vehicles to meet its spacelift needs. Unfortunately, this method is not responsive: months of preparation are typically required and launch costs are high. Consequently, the Air Force seeks a reusable military launch vehicle that can be launched inexpensively and quickly regenerated between flights. Air Force Research Laboratory personnel desire a tool to help evaluate candidate designs and perform tradeoff studies necessary ... |
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| Challenges in Detecting Damage in the Presence of Microstructural Inhomogenities in a Friction Stir Welded Aluminum Alloy for Reusable Cryotanks (Preprint) |
MAR 2006 |
12 pages |
| Authors:
Shamachary Sathish; Kumar V. Jata; Richard W. Martin; Richard Reibel; DAYTON UNIV RESEARCH INST (UDRI) OH ENERGY AND ENVIRONMENTAL ENGINEERING DIV
|
| Continuous real time structural health monitoring will be a requirement for future space launch missions. Reusable metallic cryotanks manufactured using Friction Stir Welding (FSW) technology for multiple missions, demands weld and microstructural integrity. The FS weld contains multiple interfaces and a variety of microstructures. To develop NDE-based health monitoring capability which detects damage and monitors the progression of damage, in the presence of these microstructural inhomogeneities, is a challenging task. ... |
|
| Cost Comparison Of Expendable, Hybrid and Reusable Launch Vehicles |
MAR 2006 |
118 pages |
| Authors:
Greg J. Gstattenbauer; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| This study compares the developmental, production, and maintenance costs (DPM) of twostage- to-orbit (TSTO) expendable (ELV), hybrid (HLV), and reusable (RLV) launch systems. This comparison was accomplished using top level mass and cost estimating relations (MERs, CERs). Mass estimating relationships were correlated to existing launch system data and ongoing launch system studies. Cost estimating relations were derived from Dr. Dietrich Koelle's 'Handbook of Cost Engineering for Space Transportation Systems'. Hybrid ... |
|
| Permeability of Polymer Composites for Cryogenic Applications (Preprint) |
MAR 2006 |
13 pages |
| Authors:
Vernon T. Bechel; Fred Arnold; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING DIRECTORATE
|
| Previous cryogenic cycling research has focused on improving our understanding of the mechanisms that lead to a leakage-producing network of cracks in carbon/epoxy and carbon/bismaleimide composites and to evaluate a number of materials for use in cryogenic pressure vessels. However, the large fuel tanks and other cryogenic components of future reusable launch vehicles may benefit from the use of even higher temperature composite materials through the reduction in the weight ... |
|
| Smooth Function Modeling for On-Line Trajectory Reshaping Application (Preprint) |
FEB 2006 |
19 pages |
| Authors:
Ajay Verma; Kaylan Vadakkeveedu; Michael W. Oppenheimer; David B. Doman; KNOWLEDGE BASED SYSTEMS INC COLLEGE STATION TX
|
| Online vehicle trajectory reshaping is desired for a class of autonomous air vehicles such as RLVs in order to avoid catastrophic failure when subjected to performance restricting damages and failures. An Adaptive Trajectory Reshaping and Control (ATRC) system is envisioned that responds to altered vehicle conditions by continuously retargeting and reshaping the reference RLV trajectory satisfying the feasibility constraints. On-line trajectory reshaping to determine a feasible reference trajectory is computationally ... |
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| Optimal Guidance Command Generation and Tracking for the Reentry of a Reusable Launch Vehicle (PREPRINT) |
JAN 2006 |
|
| Authors:
Michael W. Oppenheimer; David D. Doman; Kevin P. Bollino; AIR FORCE RESEARCH LAB (AFRL/VACA) WRIGHT-PATTERSON AFB OH CONTROL THEORY OPTIMIZATION BRANCH
|
 | In this work, optimal outer-loop guidance commands are generated from an off-line reference trajectory and then tracked by a reconfigurable inner-loop control law. The primary motivation for this work is a "stepping-stone" towards online, optimal trajectory generation, footprint determination, and retargeting capabilities in the presence of control effector failures or vehicle structural/ aerodynamic degradation, uncertainty, and external disturbances. The presented guidance and control architecture uses a 6-degree-of-freedom simulation and an ... |
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| On-Line Adaptive Estimation and Trajectory Reshaping |
SEP 2005 |
14 pages |
| Authors:
Ajay Verma; Michael W. Oppenheimer; David B. Doman; KNOWLEDGE BASED SYSTEMS INC COLLEGE STATION TX
|
| An Adaptive Trajectory Reshaping and Control (ATRC) system is envisioned for RLVs to avoid catastrophic failure when subjected to performance restricting damages and failures. The ATRC is a response system that continuously reshapes and optimizes the reference RLV trajectory, such that, if physically possible, the feasibility constraints are satisfied. The focus of this paper is on two important features of the ATRC system that allow (a) estimation of a parameter ... |
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| SmartSwarms: Distributed UAVs that Think |
JUN 2004 |
23 pages |
| Authors:
Armand Prieditis; Mukesh Dalal; Andrew Arcilla; Brett Groel; Michael Van Der Bock; Richard Kong; LOOKAHEAD DECISIONS INC DAVIS CA
|
| Unmanned Aerial Vehicles (UAVs) have demonstrated tremendous capability in recent military operations. Recently swarm technology has been suggested as a possible solution to automatically control and coordinate multiple UAVs. The idea behind a swarm is that simple local rules that govern the behavior of individual entities can lead to complex emergent behavior of the system as a whole. Although such systems have achieved limited success in simulated applications, finding good ... |
|
| Reusable Space Vehicle Baseline Conceptual Vehicle |
MAR 2004 |
166 pages |
| Authors:
Dennis R. Maynard; Patricia Pettit; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
|
| Modeling efforts for future space operation vehicles at the United States Air Force Research Labs Air Vehicles Directorate have been focused towards the in flight mission. To better serve the research and development effort, a simulation of the ground operations is required allowing for trade- offs within turnaround operations and between the components that drive those procedures. However, before a simulation can be developed a conceptual model must be generated ... |
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| Flight Test Results of an Adaptive Guidance System for Reusable Launch Vehicles |
FEB 2004 |
18 pages |
| Authors:
John D. Schierman; Neha Gandhi; Jason R. Hull; David G. Ward; BARRON ASSOCIATES INC CHARLOTTESVILLE VA
|
| To enable autonomous operations in future Reusable Launch Vehicles (RLVs), reconfigurable control and adaptive guidance will often be required to facilitate recovery of the mission following a major anomalous event such as an effector failure. An adaptive guidance system that works in conjunction with a reconfigurable controller and an autonomous trajectory command reshaping algorithm is presented. The guidance law utilizes a backstepping architecture to generate pitch rate commands that drive ... |
|
| Reusable Design Processes via Modular, Executable, Decision-Centric Templates |
01-Jan-2004 |
14 pages |
| Authors:
Jitesh H Fern Panchal; Marco G ndez; Christiaan J Paredis; Farrokh Mistree; GEORGIA INST OF TECH ATLANTA SCHOOL OF MECHANICAL ENGINEERING
|
| While there have been many advances with respect to reusability and scalability of product architectures over the past several decades, little progress has been made in applying the same concepts to underlying design processes. It is on this aspect of design process design that we focus in this paper. Design processes play a key role in product design and their configuration has a significant effect on both the efficiency and ... |
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| Value Recovery from the Reverse Logistics Pipeline |
2004 |
|
| Authors:
David Diener; Eric Peltz; Art Lackey; Darlene J. Blake; Karthik Vaidyanathan; RAND ARROYO CENTER SANTA MONICA CA
|
| Value recovery, in the form of the return and repair of reparable spare parts, involves large amounts of time as well as inventory investment for the Army. Sometimes it is cheaper to buy a new part rather than repair, but some parts are so expensive that it makes economic sense to repair them and return them to the inventory, typically as spares to replace other broken assemblies. This monograph reports ... |
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| Highly Operable Propulsion for Reusable Launch Vehicle Applications |
2003 |
11 pages |
| Authors:
Michael Marlow; AEROJET SACRAMENTO CA
|
| A wide variety of reusable launch vehicle concepts for placing various payloads into low earth orbit are currently being evaluated for potential civil, commercial and military applications. This recent interest is being driven by a desire to achieve reduced payload launch costs and, in some cases, very rapid response capability. In most of these cases, the general requirements of the main propulsion system are similar: a high level of operational ... |
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| Combat Modeling by Using Simulation Components |
OCT 2002 |
|
| Authors:
Oray Kulac; Murat Gunal; TURKISH NAVAL HEADQUARTERS ANKARA (TURKEY) DEPT OF R AND D AND DECISION SUPPORT
|
| Growing cost of operational trials and limited budgets make extensive live tests of military systems and frequent live exercises nearly impossible. Also defense planning dealing with extremely complex military system behaviors necessitates the utilization of innovative analysis tools. Simulation is one of the most employed tools for the military analyses training and acquisition. Its increasing importance is now well- recognized in most of the armed forces and in NATO. Dramatic ... |
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| Evaluation of Monopropellants for Reusable Launch Vehicles |
05 NOV 2001 |
3 pages |
| Authors:
Paul F. Jones; Tom W. Hawkins; Adam J. Brand; Milton B. McKay; Stephen L. Rodgers; AIR FORCE RESEARCH LAB EDWARDS AFB CA SPACE AND MISSILE PROPULSION DIV
|
| Previously, the Air Force has been investigating high performance salt-based, liquid monopropellants for low thrust spacecraft applications. The focus of this effort has been on finding a reduced toxicity monopropellant with a predicted density performance impulse greater than 50% over hydrazne. During this same period of time, NASA has been investigating reusable launch vehicle (KLV) concepts and has considered using monopropellants in this application. Anticipating a possible RLV payoff, NASA ... |
|
| DII COE for Real Time: Becoming Reality |
01-Oct-2001 |
8 pages |
| Authors:
Lucie M Robillard; H R Callison; Marilynn B Goo; John Maurer; ELECTRONIC SYSTEMS CENTER HANSCOM AFB MA
|
| The Defense Information Infrastructure (DII) Common Operating Environment (COE) provides an environment in which common reusable infrastructure and applications across information systems help achieve goals for interoperability. The Department of Defense has been working for the past three years toward realization of a vision for extending these reuse and commonality initiatives to improve the effectiveness of systems performing real-time missions. This article describes the products, processes, tools, and techniques that ... |
|
| Space Transporation: Critical Areas NASA Needs to Address in Managing Its Reusable Launch Vehicle Program |
20 JUN 2001 |
15 pages |
| Authors:
Allen Li; GENERAL ACCOUNTING OFFICE WASHINGTON DC
|
| I am pleased to be here today to discuss our work, requested by this Subcommittee, on the National Aeronautics and Space Administration's (NASA) X-33 and X-34 programs. As you know, the purpose of these efforts was to significantly reduce the cost of access to space by partnering with private industry to develop and demonstrate technologies needed for future reusable launch vehicles reaching orbit in one stage (single-stage-to-orbit). In essence, these ... |
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| Quality Initiatives in the Air Force Development of Reusable Launch Vehicles |
08 MAR 2001 |
111 pages |
| Authors:
Charles S. Galbreath; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH SCHOOL OF ENGINEERING
|
| This thesis identifies useful tools and techniques available to aid the Air Force development of a reusable launch vehicle (RLV). These tools are identified by comparing traits found within the Lean Aerospace Initiative, Six Sigma and systems engineering. While identified specifically for the RLV effort, these tools and techniques will be of use to many development programs. Historical perspectives of both RLV development efforts within the Air Force and origins ... |
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| A Method for Integrating Aeroheating into Conceptual Reusable Launch Vehicle Design |
22 AUG 2000 |
191 pages |
| Authors:
Karl K. Cowart; GEORGIA INST OF TECH ATLANTA SCHOOL OFAEROSPACE ENGINEERING
|
| A method for integrating Aeroheating analysis into conceptual reusable launch vehicle RLV design is presented in this thesis. This process allows for faster turn-around time to converge a RLV design through the advent of designing an optimized thermal protection system (TPS). It consists of the coupling and automation of four computer software packages: MINIVER1, TPSX2, TCAT3 and ADS4. MINIVER is an Aeroheating code that produces ... |
|
| Reusable Launch Vehicles and Space Operations |
MAY 2000 |
85 pages |
| Authors:
John E. Ward; AIR UNIV PRESS MAXWELL AFB AL
|
| As a result of technological progress, we are now on verge of developing cost-effective reusable launch vehicles (RLV) for space. This study reviews the strategic implications of the emerging vision within the U.S. Department of Defense for using these vehicles. Although the U.S. Air Force is making the transition to a force that relies increasingly on space, the best path does not necessarily involve replicating the traditional air missions in ... |
|
| Reusable Launch Vehicles: Rethinking Access to Space (cover title: Reusable Launch Vehicles and Space Operations) |
MAY 2000 |
85 pages |
| Authors:
Jr Ward John E.; AIR WAR COLL MAXWELL AFB AL CENTER FOR STRATEGY AND TECHNOLOGY
|
| As a result of technological progress, the United States is now on the verge of developing cost-effective reusable launch vehicles (RLV) for space. This study reviews the strategic implications of the emerging vision within the U.S. Department of Defense for using these vehicles. Although the U.S. Air Force is making the transition to a force that relies increasingly on space, the best path does not necessarily involve replicating the traditional ... |
|
| East Coast Abort Modeling with RTLS Elimination for the Space Shuttle- Liquid Fly Back Booster Launch System |
MAR 1999 |
184 pages |
| Authors:
Thomas L. Miller; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
|
| This study investigates the ability of the proposed Liquid Fly Back Booster, a replacement for the Space Shuttle's Solid Rocket Boosters (SRBs), to eliminate the need for the Return to Launch Site (RTLS) abort mode. A Fortran model of a nominal launch trajectory was perturbed to simulate a single Space Shuttle Main Engine-out (SSME-out) abort scenario at different times in the launch with the goal being to abort to the ... |
|
| Behavioral Relationships Between Software Components |
27 OCT 97 |
187 pages |
| Authors:
David S. Gibson; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
|
| Building software systems from reusable software components has been a goal of software engineers for nearly three decades. Despite progress, the realization of this goal remains surprisingly elusive. Expensive hardware systems such as aircraft, communication networks, and factory assembly lines are designed so that various subsystems (both hardware and software) can be removed and replaced in order to change the performance and functionality of the overall system. In a similar ... |
|
| Certification of Reusable Software Components |
JUN 97 |
250 pages |
| Authors:
Sharon Rohde; Pamela Geriner; SOFTWARE PRODUCTIVITY SOLUTIONS INC INDIALANTIC FL
|
| Recognizing that software will not he reused unless its quality can be accurately and effectively determined, Rome Laboratory has initiated a research project in reusable software asset certification. Certification, as used in this document, refers to a process in which inspection, analysis, and testing techniques are used to achieve assurance of th quality of reusable assets. This process might be performed by a reuse repository, by a renser, by an ... |
|
| Informal Technical Data for Software Technology for Adaptable, Reliable Systems (STARS). Domain Architecture-Based Generation for Ada Reuse (DAGAR) guidebook, Version 1.0 |
28 JUN 96 |
146 pages |
| Authors:
Carol Klingler; James Solderitsch; LOCKHEED MARTIN FEDERAL SYSTEMS MANASSAS VA
|
| This guidebook describes the Domain Architecture-Based Generation for Ada Reuse (DAGAR) domain architecture and implementation development method. DAGAR has been developed to provide a repeatable, documented method for domain architecture engineering. The method is consistent with the Organization Domain Modeling (0DM) domain engineering method and can be used to support the definition of an asset base architecture and implementation of assets within 0DM. The EDGE/Ada (Enhanced Domain Generation Environment for ... |
|
| The Costs and Benefits of Domain-Oriented Software Reuse: Evidence From the STARS Demonstration Projects |
JUN 96 |
|
| Authors:
Thomas P. Frazier; INSTITUTE FOR DEFENSE ANALYSES ALEXANDRIA VA
|
| For more than twelve years, the Defense Advanced Research Projects Agency (DARPA) has funded software technology initiatives under its Software Technology for Adaptable, Reliable Systems (STARS) program. Between 1992 and 1995, DARPA funded three case studies to demonstrate the use of STARS technologies on three moderately sized software development projects, one in each military department. This paper describes the costs and benefits of using STARS technologies for these demonstration projects. ... |
|
| The Impact of Case Tools, ADA, and Software Reuse on a DOD Software Development Project |
MAR 96 |
134 pages |
| Authors:
Loren J. Dugan; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Software continues to be the single greatest challenge facing DoD systems developers. The criticality of software as a integral component of system design, continues to grow in importance as DoD moves into the 21st Century. To meet this ever increasing challenge, software development organizations are incorporating new design requirements and practices into their development processes. These new requirements/practices, properly implemented into the development process, can reduce software development and maintenance ... |
|
| Populating the Software Database |
MAR 96 |
317 pages |
| Authors:
Tuan A. Nguyen; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The cost of software development could be reduced if relevant reusable software components could be retrieved efficiently. The few libraries currently in existence have no standard method for selecting components germane to the intended application. This thesis focuses on the actual formation and population of library components for an improved software library model proposed in Ref. 1. This library would provides the codes for users to implement the desired system ... |
|
| Informal Technical Report for Software Technology for Adaptable Reliable Systems (STARS). Learning and Inquiry Based Reuse Adoption (LIBRA): A Field Guide to Reuse Adoption through Organizational Learning. Version 1.1 |
06 FEB 96 |
118 pages |
| Authors:
Sidney Bailin; Mark Simos; Larry Levine; Dick Creps; LORAL DEFENSE SYSTEMS-EAST MANASSAS VA
|
| This document presents a new and innovative learning oriented approach to reuse assessment and adoption. The approach, entitled Learning and Inquiry Based Reuse Adoption (LIBRA), focuses on highly participative scenario- based techniques derived from the fields of organizational learning and theatrical scripting. |
|
| Software Reuse |
96 |
13 pages |
| Authors:
Jacqueline Wall; Regina Ratcliff; Padma Reddy; Y. B. Reddy; GRAMBLING STATE UNIV LA
|
| Software reuse is defined as the process of creating software systems from existing software rather than building software from scratch. Reuse can occur: (1) during maintenance, reengineering, or in the implementation of new systems; (2) within a system, between systems, or between a system and a library of reusable components; and, (3) at the level of code components or abstract designs. The properties of reuse and the role of the ... |
|
| Software Maintenance and Software Reuse |
96 |
15 pages |
| Authors:
Y. B. Reddy; Dachelle Weems; GRAMBLING STATE UNIV LA
|
| Maintenance is the process of modifying a software system or component after delivery to correct faults, improve performance or other attributes, or adopt to a changed environment. Software maintenance has been classified into three categories: corrective, adaptive and perfective. During the maintenance it may be necessary to disassemble an old system into components and resemble them into new system (reengineering) with old and need new software components. In this paper ... |
|
| Correction of a Memory Management Method for Lock-Free Data Structures |
DEC 95 |
10 pages |
| Authors:
Maged M. Michael; Michael L. Scott; ROCHESTER UNIV NY DEPT OF COMPUTER SCIENCE
|
| Memory reuse in link-based lock-free data structures requires special care. Many lock-free algorithms require deleted nodes not to be reused until no active pointers point to them. Also, most lock-free algorithms use the compare. and. swap atomic primitive, which can suffer from the ABA problem' (l) associated with memory reuse. Valois (3) proposed a memory management method for link-based data structures that addresses these problems. The method associates a reference ... |
|
| Objectism 3.0: A Software Architecture for the Development of Portable Visual Simulation Applications |
DEC 95 |
156 pages |
| Authors:
Shawn M. Hannan; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
|
| A visual simulation software architecture is a reusable design for visual simulation applications. This thesis effort was the third stage in an ongoing refinement of such an architecture, named ObjectSim. The primary goals of this stage were to improve the architecture by eliminating its dependence on two platform-specific graphics libraries (named GL and Performer, from Silicon Graphics, Inc.), and to examine the potential for expanding the architecture to accommodate distributed ... |
|
| Satellite Domain Analysis Report for Reusable Software Architecture for Spacecraft |
DEC 95 |
63 pages |
| Authors:
Amy Flanagan; Benjamin Moultrie; MARTIN MARIETTA TECHNOLOGIES INC DENVER CO
|
| The Reusable Software Architecture for Spacecraft (RSAS) project has as an objective, the of an engineering 'Workbench' which will partially automate the production of flight software. The Workbench will house a generic flight software domain architecture which will be tailorable to mission requirements. Guided by the tailored domain architecture, the Workbench will assemble reusable software components to synthesize a mission flight application. This report provides an overview of the flight ... |
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Reports by Keyword(s)
*REUSABLE EQUIPMENT
