| Development of a Lightweight, Multifuel-Capable, 30kWe APU for Non-Primary Power |
17-Aug-2009 |
6 pages |
| Authors:
David M Sykes; Jeffrey Ratowski; ARMY RESEARCH DEVELOPMENT AND ENGINEERING COMMAND WARREN MI
|
 | A methodology for rapid development of purpose-built, heavy-fueled engines is being created. The methodology leverages best-in-class computational tools, component supplier expertise, user-programmable ECUs, and rapid prototyping to quickly provide custom engines for demanding military applications. First-tier automotive suppliers are being used extensively on non-complex standard components to reduce the development time. Our design methodology aggressively eliminates unnecessary components and incorporates various other weight-saving features to minimize system weight. The anticipated ... |
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| Joint Light Tactical Vehicle (JLTV): Background and Issues for Congress |
18-May-2009 |
|
| Authors:
Andrew Feickert; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
 | The Joint Light Tactical Vehicle (JLTV) is currently being developed by the Army and the Marine Corps as a successor to the 11 different versions of the High Mobility, Multi-Wheeled Vehicle (HMMWV) that have been in service since 1985. There are concerns about the affordability of JLTVs and its redundancy with other tactical wheeled vehicles. This report will be updated as events warrant. |
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| Ultralight Metallic Panels with Textile Cores Designed for Blast Mitigation and Load Retention/Topologically Structured Materials: Blast and Multifunctional Implementations |
May-2009 |
18 pages |
| Authors:
Haydn N Wadley; Kumar P Dharmasena; VIRGINIA UNIV CHARLOTTESVILLE DEPT OF MATERIALS SCIENCE AND ENGINEERING
|
| Interest in periodic cellular metals has been driven by the structural and thermal management application potential of cellular metal sandwich structures. The research conducted in this program has led to the development of lattice structures which can be configured in the form of various core topologies of sandwich panels with high specific stiffness and strengths amenable for use in multifunctional applications (e.g. thermal dissipation, ballistic resistance). The applications of these ... |
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| Right Sizing the Force: Restructuring the Marine Light Attack Helicopter (HML/A) Squadron to Better Meet the Emerging Threat |
29-Apr-2009 |
|
| Authors:
Shawn J Hughes; MARINE CORPS COMMAND AND STAFF COLL QUANTICO VA
|
| To implement the Commandant's vision statement and leverage the increased performance capabilities of the modernized UH-1Y and AH-1Z helicopters, the Marine Corps must reevaluate the organizational structure of the Marine Light Attack Helicopter (HML/A) squadron to determine if the unit is adequately manned, trained, and equipped to meet the expectations of emerging threats and future requirements. The Commandant's Vision and Strategy 2025 calls for multi-capable forces to perform in a ... |
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| The Lightcraft Technology Demonstration Program. Part 1 |
NOV 2007 |
304 pages |
| Authors:
Jr Mead Franklin B.; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE
|
| Part I - The Lightcraft Technology Demonstration Program (LTD) is a report on the development of laser propulsion at the Air Force Research Laboratory (AFRL) between 1996 and 1999. The LTD Program was originally planned in five phases. Phase I, Lightcraft Concept Demonstration, was to demonstrate the feasibility of the basic concept. This phase ended in December 1998. Phase II, Lightcraft Vertical Launches to Extreme Altitudes, was a five-year effort ... |
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| Light-Weight Materials Selection for High-Speed Naval Craft |
Jun-2007 |
|
| Authors:
Joseph B Torrez; MASSACHUSETTS INST OF TECH CAMBRIDGE
|
| A decision analysis study was conducted on the process of materials selection for high-speed naval craft using the Modified Digital Logic (MDL) method. The purpose is to show how this method along with Ashby's material selection process can be integrated to provide a comprehensive tool designed specifically for light-weight material optimization. Using Ashby's Material Selection Charts and the MDL method, a step by step material selection process is outlined. Furthermore, ... |
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| Strategic Materials |
2007 |
27 pages |
| Authors:
Eddie Adelman; Cassie Barlow; Eric Chamberlin; James Fulton; Jim Galvin; Chuck Good; Sue Goodyear; Igor Kosiak; Mike Moran; Tom Ockenfels; INDUSTRIAL COLL OF THE ARMED FORCES WASHINGTON DC
|
| The ability of U.S. defense firms to gain reliable, timely, and affordable access to the materials needed to produce defense products is critical to U.S. national security. When the supply of materials required by these firms becomes vulnerable and no material substitutions are available, the material can be classified as "strategic." These strategic materials warrant scrutiny to ensure associated risks are mitigated. A close examination of the "light armor" industry ... |
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| Lightweight Small Arms Technologies |
01 NOV 2006 |
9 pages |
| Authors:
Kori Spiegel; Paul Shipley; ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER PICATINNY ARSENAL NJ
|
| From the groundwork laid by the Objective Force Warrior program, the concept of the Soldier as a System was established to create a fully integrated, modular soldier system, based in part on the Future Combat System concept. One of the major reasons for this new way of thinking is that while technology advances and becomes more readily available to ground troops, it results in increasing combat load. The Lightweight Small ... |
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| Innovations for Future Gap Crossing Operations |
NOV 2006 |
6 pages |
| Authors:
Jimmy E. Fowler; Donald T. Resio; James N. Pratt; Stanley J. Boc; Francis E. Sargent; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| Even with the Army's transformation to lighter forces, problems in difficult terrains, such as coastal and riverine areas, soft soils, and man-made impediments can bring the flow of equipment and personnel to a standstill. ERDC researchers are presently developing gap-crossing technologies that use High Modulus Synthetic Fiber (HMSF) straps to achieve moment carrying capacities and increased survivability characteristics. The HMSF straps are used in conjunction with designs that combine optimized ... |
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| Naval Prototype Optical Interferometer (NPOI) Upgrade with Lightweight Telescopes and Adaptive Optics: A Status Update |
Apr-2006 |
9 pages |
| Authors:
Tom Armstrong; Sergio R Restaino; Jonathan R Andrews; Christopher C Wilcox; Robert Romeo; Robert Martin; NAVAL RESEARCH LAB KIRTLAND AFB NM REMOTE SENSING DIV
|
| The portability of meter-class telescopes has been limited by the weight of the mirror, tube assembly, and the mount required to provide pointing and tracking. The novel lightweight carbon fiber-reinforced polymer telescopes being developed for array population at the Naval Prototype Optical Interferometer are orders of magnitude lighter than traditional telescopes. When combined with a lightweight carbon fiber mount, these telescopes will be easily transportable from one telescope station to ... |
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| A Novel, Light Weight Solar Array: Comparison with Conventional Systems |
2006 |
6 pages |
| Authors:
Jr. Vendura George J.; Patrick Malone; Larry Crawford; L'GARDE INC TUSTIN CA
|
| A novel, lightweight solar panel design is described that incorporates the best features from three separate areas of development: (1) advanced solar cells; (2) light weight, flexible blanket technology; and (3) deployment by inflation. In this study, inflation-deployed panels of various powers incorporating four different types of low mass solar cells are investigated with respect to conventional systems. Depending on panel size and cell type, five-fold and three-fold improvements in ... |
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| Activelets: Light Weight Architecture for Special Operations Forces (SOF) Planning and Scheduling |
24 AUG 2005 |
147 pages |
| Authors:
Stephen F. Smith; David W. Hildum; David R. Crimm; CARNEGIE-MELLON INST OF RESEARCH PITTSBURGH PA
|
| This project aimed at delivering continuous planning and scheduling capabilities to support crisis response for Special Operations Forces. The principal accomplishment of this effort has been the development of Comirem (COntinuous Mixed-Initiative REsource Management tool), an interactive planning/scheduling system designed to more directly match the iterative user-centered nature of planning and scheduling in practical domains by providing the means to represent evolving scenarios; define and reuse operational templates; maintain problem ... |
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| SLMS(trademark) Athermal Technology for High Quality Wavefront Control of HEL Tactical Airborne and Relay Mirror Beam Control Applications (Postprint) |
15 JUL 2005 |
17 pages |
| Authors:
Ryan Conk; Bill Goodman; SCHAFER CORP ALBUQUERQUE NM
|
| The operational environment for tactical airborne mission is typically on the order of -20 degrees C. Relay mirror systems typically must operate at colder temperatures, on the order of -50 degrees C. The desirable attributes for the mirrors and beam directors for systems operating under these conditions are high quality wavefront control. Wavefront control can be improved through the use of very low absorption coatings which minimize thermal distortion, by ... |
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| A Comparison of Mamdani and Sugeno Methods for Modeling Visual Perception Lab Data |
01 JUN 2005 |
6 pages |
| Authors:
Thomas J. Meitzler; Euijung Sohn; TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
|
| A laboratory test procedure is described by the authors in which a baseline Light Armored Vehicle (LAV) is compared to a treated LAV in the TARDEC Visual Perception Laboratory (VPL). The test imagery was collected from the field and then adjusted for display in the laboratory. The experimental visual detection values obtained in the lab were modeled using the Mamdani and Sugeno/ANFIS Fuzzy Reasoning techniques. The results of each modeling ... |
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| Aluminum Cartridge Case Concept |
MAY 2005 |
69 pages |
| Authors:
Brian Tasson; Lucian Sadowski; ALLIANT TECHSYSTEMS INC PLYMOUTH MN
|
| The infantryman in the field is expected to carry over 60 lbs of material. In order to reduce the weight carried by the soldier, a lightweight alternative to the brass cartridge case is an aluminum cartridge case. This comprehensive detailed report describes the design of the cartridge case, the finite element analysis, the quality functional deployment analysis, the manufacturing of over 2,500 cases using production methods, and the results of ... |
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| Development of a Lightweight Ammunition Concept Using an Alternative Case Material and Enhanced Propellant |
MAY 2005 |
15 pages |
| Authors:
Todd Cloutier; Lucian Sadowski; VERITAY TECHNOLOGY INC EAST AMHERST NY
|
| Soldiers are carrying additional high technology equipment to increase effectiveness at additional weight. To achieve a significant weight reduction and to enhance soldier's effectiveness, the Joint Service Small Arms Program Office is developing a Lightweight Family of Weapons and Ammunition. The ammunition concept developed during this contract combines a lightweight cartridge case and a high-density consolidated propellant charge that substantially reduces the cartridge volume. This report describes the lightweight cartridge ... |
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| Omni-Azimuthal Pattern Generator for VLF and LF Communication |
18 FEB 2005 |
18 pages |
| Authors:
David A. Tonn; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| It is a general purpose and object of the present invention to generate an antenna pattern that does not change as a function of azimuth angle, but has equally good reception from all azimuth angles. It is an additional purpose to generate such an omni-azimuthal antenna pattern over a broad range of frequencies in a manner that does not require manual retuning or adjustment. These objects are accomplished through the ... |
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| Did the Marine Corps Fix Fires or Save an Airframe |
07-Feb-2005 |
11 pages |
| Authors:
Waco Lane; MARINE CORPS COMMAND AND STAFF COLL QUANTICO VA
|
| In 1999 General Jones stated that the Marine Corps needed to fix Marine artillery. He was particularly interested in replacing the aging M198 with a lighter, more mobile 155mm howitzer. The Marine Corps has since developed, tested, and fielded a replacement howitzer. However, by the time the requirements for this new howitzer were finalized, the weapon was no longer designed to make improvements over the M198. Instead the requirements were ... |
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| Aluminum Foams Processed by Rapid Prototyping for Lightweight Structures |
DEC 2004 |
8 pages |
| Authors:
R. Vaidyanathan; M. Patterson; T. Phillips; R. Cipriani; K. A. Dannemann; A. E. Nicholls; ADVANCED CERAMICS RESEARCH TUCSON AZ
|
| The demand for faster and lighter land transportation for the troops has increased the need for more efficient structures. Sandwich panels form one type of efficient structure enabling the application of steel, aluminium or composites in the construction. Cellular metals for sandwich structures have been available for decades (Ashby 1998, Fleck 1998, and Gibson 1997), but new opportunities are emerging for two reasons. Novel manufacturing approaches have beneficially affected performance ... |
|
| iMAST Quarterly, Number 1, 2004 |
Jan-2004 |
9 pages |
| Authors:
APPLIED RESEARCH LABORATORY STATE COLLEGE PA
|
| This quarterly briefly addresses engine fretting evaluation. The feature article is titled Light Armored Vehicle Noise Control. Exploiting the acoustics expertise resident at ARL Penn State, engineers were asked by the Marine Corps to address noise issues related to the Light Armored Vehicle. The integration of advanced materials, manufacturing processes, health monitoring, and acoustic tailoring promotes reductions in gross weight, vibration, interior noise, and life-cycle cost, as well as increases ... |
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| The XM777 Joint Lightweight 155mm Howitzer program (LW155): A Case Study in Program Management Considerations Concerning the Use of National Arsenal Assets |
SEP 2003 |
107 pages |
| Authors:
Philip R. Clark; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The end of the Cold War signaled hard times ahead for both public and private manufacturers in the Nation's Defense Industry. Army-controlled manufacturing Arsenals, subject to Governmental control and requirements to maintain excess mobilization capacity, found themselves increasingly unable to compete with private industry on cost. Set-aside protectionist legislation, especially the Army Arsenal Act and the Stratton Amendments, played an increasing role in the ability of the Arsenals to obtain ... |
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| Multifunctional Mechatronic Materials |
21 FEB 2003 |
|
| Authors:
Anthony Evans; PRINCETON UNIV NJ OFFICE OF RESEARCH AND PROJECT ADMINISTRATION
|
| Contributions have been made in two basic areas: ultralight structures based on sandwich panels with truss and textile cores, and high authority actuating structures based on the properties of the Kagome system. This final report contains the following studies: (1) Effective Properties of the Octet-truss Lattice Material, by V.S. Deshpande, N.A. Fleck, and M.F. Ashby; (2) Kagome Plate Structures for Actuation, by R.G. Hutchinson, N. Wicks, A.G. Evans, N.A. Fleck, ... |
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| Light Armored Vehicles in Operations Other Than War |
01 MAY 2002 |
58 pages |
| Authors:
R. A. DeForest; MARINE CORPS COMMAND AND STAFF COLL QUANTICO VA
|
| This study proposes that the Light Armored Vehicle (LAV) is an ideal system for service in Military Operations Other Than War (MOOTW), and that the Marine Corps must preserve this capability if it is to be able to continue to contribute effectively to these missions. The flexibility, mobility, and relative firepower of the Light Armored Vehicle (LAV) has been tested in real world operations in Panama, Somalia, and Kosovo. The ... |
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| The Lightweight Artillery Projectile |
SEP 2001 |
44 pages |
| Authors:
James M. Bender; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| This report discusses the logistical advantages of using composite materials as a substitute for steel in 155-mm cargo-carrying artillery shells. A weight savings of 25-30% per projectile can be realized. Combined with the weight savings offered by the XM777 lightweight howitzer, Light and Rapid Deployment Forces can be equipped with the firepower of the 155-mm cannon utilizing projectiles with a four-to-one lethality advantage over their 105-mm counterpart, while weighing approximately ... |
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| Highly Damped Lightweight Wavy Composite |
JUL 2001 |
147 pages |
| Authors:
William F. Pratt; Matthew S. Allen; Troy J. Skousen; PATTERNED FIBER COMPOSITES INC LINDON UT
|
| Wavy composite had its origin in the Star Wars programs of the late 1980s as part of a space-based laser anti-missile program and is a new material that exhibits both high stiffness and damping when combined with capable viscoelastic materials. If high modulus fibers are used in the production of the wavy composite, it is possible to attain the stiffness of steel, thousands of times the damping, with the lightweight ... |
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| Bolt-Load Retention Behavior of a Die Cast Magnesium-Rare Earth Alloy |
25 JUN 2001 |
|
| Authors:
Ian P. Moreno; MICHIGAN UNIV ANN ARBOR
|
| The need for improved understanding of new magnesium alloys for the automotive industry continues to grow as the application for these lightweight alloys expands to more demanding environments, particularly in drivetrain components. Their use at elevated temperatures, such as in transmission cases, presents a challenge because magnesium alloys generally have lower creep resistance than aluminum alloys currently employed for such applications. In this study, a new die cast magnesium alloy, ... |
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| Active Structural Acoustic Control as an Approach to Acoustic Optimization of Lightweight Structures |
JUN 2001 |
8 pages |
| Authors:
Dirk Mayer; Bernd Vogl; Holger Hanselka; OTTO VON GUERICKE UNIV MAGDEBURG (GERMANY) DEPT OF ADAPTRONICS
|
| Conventional approaches to optimizing the acoustic behavior of lightweight structures have mainly been restricted to the concept of Active Noise Control(ANC). This concept is aimed to attenuating primary noise sources with secondary controlled noise sources by taking advantage of destructive interference. However it is also possible to actively control the vibrating structure using piezoceramic actuators to alter very intensively sound-radiating operating deflection shapes. This approach is referred to as Active ... |
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| 120-MM Ammunition Feasibility Assessment for Light Artillery |
MAR 2000 |
31 pages |
| Authors:
Stephen G. Floroff; Bryan L. Salatino; ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER PICATINNY ARSENAL NJ
|
| A study was undertaken to determine the feasibility of a 120-mm solution for future light artillery systems using existing U.S. 120-mm ammunition. By combining existing U.S. 120-mm mortar and tank ammunition, a complete direct and indirect firing solution is created without significant ammunition development costs. Improvements in lethality over 105-mm artillery ammunition as well as a reduction in weight, size, and logistics burden over ... |
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| Report to the Senate and House Appropriations Subcommittees on Defense. Regarding a Plan for the Utilization of Rock Island Arsenal |
DEC 1999 |
16 pages |
| Authors:
MARINE CORPS WASHINGTON DC
|
| Congress expressed concern in the Fiscal Year 2000 Defense Appropriations Conference Report 106-371 to the 2000 Department of Defense Appropriations Act that the Marine Corps and Army are not utilizing the expertise of Army arsenals in the development and design of the Lightweight 155mm Howitzer (LW155). In particular, Congress requested a plan to include Rock Island Arsenal (RIA) in producibility and manufacturing aspects of LW155 ... |
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| Report on the Evaluation of Two Prototype Chemical Protective Clothing Garments |
AUG 1998 |
33 pages |
| Authors:
W. R. Santee; L. A. Blanchard; J. A. Gonzalez; D. W. MacLeod; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
|
| The study evaluated the heat strain experienced by seven soldiers exposed to heat stress while exercising in prototype and issue chemical protective (CP) garments in Mission Oriented Protective Posture (MOPP-1). The control garments were the issue Chemical Protective Undergarment (CPU) and Marine Saratoga Overgarment (CPO). The prototype (X) garments were lightweight CPO and CPUs. Testing consisted of 100 min exposures to thermoneutral (20C, 50% ... |
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| High Performance Ultra-Lightweight Metals |
MAY 1998 |
7 pages |
| Authors:
Donald S. Shih; BOEING AEROSPACE CO ST LOUIS MO
|
| LDC (Low Density Core) AlBeMet - In this quarter, Brush Wellman (BWI) and Boeing were scaling up the LDC process in order to produce 20 billets/ cans of LDC AlBeMet 162 for the Subscale Structural Porous Al-Be Production task (1. 2.3.3). The HIP can dimensions increased from 0.75 x 1.5 x 3 inch3 to 0.75 x 3 x 4 inch3, a 266 % increase in volume. With this size, external ... |
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| Guidance and Control Developments for the First Lightweight AGM-130 Missile |
1998 |
|
| Authors:
William J. Marx; Ralph D. Ehrich; James R. Beaty; BOEING INFORMATION SPACE AND DEFENSE SYSTEMS DULUTH GA AIRCRAFT AND MISSILESYSTEMS DIV
|
| The AGM-130 air-to-ground missile is a stand-off weapon with an extensive product ancestry. The GBU-15 guided bomb unit, developed in the mid- 1970s was the first in this series of weapons. In the early 1980s, a rocket motor was attached to the underside of the GBU-15, resulting in the AUM-130A air-to-ground, precision-guided missile. In the early 1990s, the BLU-109/B penetrator warhead was integrated into the ... |
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| Test and Evaluation of the LMTV Driveline |
1998 |
34 pages |
| Authors:
Stephen J. Aamodt; TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
|
| A Light Medium Tactical Vehicle (LMTV) was tested on a chassis dynamometer at the US Army Tank Automotive Research, Development and Engineering Center (TARDEC) test labs from the months of August through October of 1998. The purpose was to determine the strains and accelerations in the driveline system and to determine the effect of different driveline configurations on these values. Tested variations included the OEM 3.5 inch diameter rear driveshaft, ... |
|
| JTCG/AS Interlaboratory Ballistic Test Program |
DEC 97 |
62 pages |
| Authors:
Albert L. Chang; Barry A. Bodt; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| A two-phase study was conducted to determine the efficacy of MIL-STD- 662E in ballistic protection limit determination for advanced lightweight armor technologies. The first-phase results demonstrated an unacceptable variability in limit estimates across sites. It was concluded that more stringent controls in implementing MIL-STD-662E, particularly as to test velocity selection, would be required to achieve adequate reproducibility. An unusual pattern in the data from the first phase suggested that there ... |
|
| Ultralight Metal Structures |
SEP 97 |
18 pages |
| Authors:
Anthony G. Evans; HARVARD UNIV CAMBRIDGE MA
|
| The major challenge for implementation of cellular metals involves their multifunctional nature. That is, their performance attributes relative to competing materials are rarely based on a single property category. Moreover, few applications rely solely on specific mechanical or thermal properties. Combinations of these with other attributes, such as energy absorption, acoustic damping, etc. provide a performance benefit. Furthermore, implementation opportunities may not depend on performance, but rather on cost relative ... |
|
| Construction Productivity Advancement Research (CPAR) Program. Development of High-Performance Lightweight Concrete Masonry Units |
JUN 97 |
145 pages |
| Authors:
Steven C. Sweeney; Pamalee A. Brady; Maher K. Tadros; Gary L. Krause; Joan D. Bowser; CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL
|
| Masonry construction continues to predominate in U.S. military construction and other sectors, but there has been little improvement in masonry structural technology for several decades. Without improvements in materials and productivity, the cost of masonry construction will significantly increase. To help keep masonry construction affordable, the U.S. Army Construction Engineering Research Laboratories (USACERL) initiated a Cooperative Research and Development Agreement with the University of Nebraska Center for Infrastructure Research to ... |
|
| The National Shipbuilding Research Program. 1997 Ship Production Symposium, Paper Number 18: Development of a Production Optimization Program for Design and Manufacture of Light Weight/High Strength Hull |
APR 1997 |
10 pages |
| Authors:
Robert Latorre; Paul Herrington; NEW ORLEANS UNIV LA
|
| There is an interest in introducing a high speed marine vehicle for crew boat service to the offshore oil and gas fields in the Gulf of Mexico. Consequently, it is necessary to develop a light weight hull structure suitable for rapid modular construction. This paper presents the authors numerical and experimental evaluation of a lightweight aluminum hull panel. An optimization routine was developed to investigate the sensitivity of the design ... |
|
| Dual Frequency Lightweight Deployable Antenna System. |
11 JUN 1996 |
|
| Authors:
Paul M. Mileski; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| A lightweight deployable antenna system capable of operating at two frequencies concurrently includes a canister providing an elongated chamber and mast therewithin. A conductor extends into the mast to provide radio signals to an antenna assembly and three broadband coaxial cables, which are coiled about a spacer and are electrically connected to the antenna assembly. The antenna assembly comprises four antenna elements of resiliently deflectable wire spaced at 90 degree ... |
|
| Circularly Polarized Dual Frequency Lightweight Deployable Antenna System. |
21 MAY 1996 |
|
| Authors:
Paul M. Mileski; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| A deployable antenna assembly includes a canister providing an elongated chamber and an elongated hollow mast with a mounting member on its upper end. A coaxial cable extends into the hollow mast to provide radio signals to the antenna assembly of four antenna members of resiliently deflectable members spaced at 90 degree intervals about the periphery of a mounting plate. In the non-deployed position elongated arms extend downward along the ... |
|
| High Frequency Alternator, Power Frequency Conversion (HFA-PFC) technology for Lightweight Tactical Power Generation |
22 SEP 1995 |
142 pages |
| Authors:
Peter Shapiro; Sabina Shapiro; JSP INDUSTRIES INC OVERLAND PARK KS
|
| This document describes Variable Speed High Frequency Alternators for diesel engine gen-sets with variable speeds in the range of from 600 RPM to 3, 600 RPM and High Frequency Alternators for gas turbine gen-sets with variable speeds in the range of from 8,700 RPM to 60,000 RPM. This document also describes two-step and single-step Power Frequency Converters for conversion of the variable high frequency AC power ... |
|
| Lightweight Cold Weather Underwear Investigation |
OCT 94 |
22 pages |
| Authors:
Tina M. Phaneuf; NAVY CLOTHING AND TEXTILE RESEARCH FACILITY NATICK MA
|
| The Navy Clothing and Textile Research Facility was tasked by the Marine Corps Systems Command to conduct testing of various types of lightweight cold weather underwear materials for physical and thermal characteristics. These tests were conducted in order to develop a Marine Corps standard for future product development. Based on test results, two fabrics were recommended as good candidates for use in lightweight cold weather underwear. |
|
| An Ada Binding to the SAFENET Lightweight Application Services |
DEC 93 |
|
| Authors:
B. C. Meyers; Gary Chastek; CARNEGIE-MELLON UNIV PITTSBURGH PA SOFTWARE ENGINEERING INST
|
| This document describes an Ada binding to the Survivable Adaptable Fiber Optic Embedded Network (SAFENET) lightweight application services. The major goal in the design of the binding was schedulability. The document contains the Ada package specifications for the binding as well as a rationale for the design. Ada, Survivable Adaptable Fiber Optic Embedded Network (SAFENET) , Ada binding, Lightweight application services, Distributed systems, Networks, Realtime |
|
| Physiological Efficacy of a Lightweight Ambient Air Cooling Unit for Various Applications |
OCT 93 |
18 pages |
| Authors:
Yasu T. Chen; Susan H. Bomalaski; Stefan H. Constable; ARMSTRONG LAB BROOKS AFB TX
|
| In an attempt to further advance intermittent conditioned air cooling (IC) concept, a strategy of supplementing continuous air cooling (CC) was conceived. With this approach, ambient air cooling (AC) is added during work with conditioned air cooling delivered during rest periods. A compact, battery- powered beltpack cooling unit (8.5 lb), designed and fabricated at the USAF armstrong Laboratory, was used to deliver 12 cfm filtered ambient air during work cycles: ... |
|
| The Measurement of Dynamic Structural Stresses in a Light Armoured Vehicle |
15 SEP 1993 |
|
| Authors:
S. J. Cimpoeru; MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA)
|
| The measurement of dynamic stresses in the structural armour of an LAV-25 light armoured vehicle is described along with a preliminary analysis of the data. Stresses were measured using strain gauge rosettes mounted at critical locations as the vehicle traversed over a range of terrain types. The mean, root mean square and maximum effective stresses for selected strain gauged locations are compared for the different terrain types. Overall, the measured ... |
|
| Research in Lightweight Elastic Robotic Arms |
10 JUN 93 |
23 pages |
| Authors:
T. A. Nartker; NEVADA UNIV LAS VEGAS
|
| The program involved a series of individual projects coordinated to develop controls for a flexible light weight robot arm. A hydraulically actuated 3-link robot arm was installed on a PRAB hydraulic base, and was designed of tubular steel. A PERT program chart was prepared (appendix B) on which various interrelated project milestones were projected. Robot design, Robotics, Robotic arms, Elastic robotic arm. |
|
| Lightweight Flexible Composite Tent Materials |
23 OCT 92 |
30 pages |
| Authors:
Robert N. King; ORCON CORP UNION CITY CA
|
| The program investigated the theory that flexible composite materials can be engineered to provide the physical properties desirable for tent materials, particularly at reduced weights relative to currently available materials. The technology for combining materials into high performance composites is uncommon in the textile industry as a whole, but is commonly practiced by manufacturers specializing in high strength-to-weight ratio materials for applications such as sailcloth and aerospace insulation systems. High ... |
|
| Lightweight Transformer |
MAY 1990 |
87 pages |
| Authors:
Daniel W. Swallom; George Enos; AVCO RESEARCH LAB INC EVERETT MA
|
| The creation of the Strategic Defense Initiative Organization (SDIO) in 1983 has established a challenge to the technical community to provide the required science and engineering necessary to achieve the objectives of the SDIO. This technical challenge is present in the requirements for minimum mass, high performance power conditioning systems capable of achieving the space-based SDIO mission applications. Transformers and their related structure are major components of the power conditioning ... |
|
| Development of Lightweight Titanium Base Alloys |
15 APR 89 |
54 pages |
| Authors:
R. J. Lederich; T. C. Peng; J. E. O'Neal; D. S. Schwartz; J. E. Deffeyes; MCDONNELL DOUGLAS RESEARCH LABS ST LOUIS MO
|
| The goal of the program on Development of Lightweight Titanium Base Alloys was to develop new titanium alloys with 10% lower density, 50% higher elastic modulus, and 50% higher strength than Ti-6Al-4V and a 150 deg C increase in service temperature above that of Ti-6Al-2Sn-4Zr-2Mo. The feasibility of adding significant amounts of Be, Li, and Mg to Ti base alloys to effect these improvements was investigated. Rapid solidification processing was ... |
|
| Development of Multi-Purpose Low Fragility Container System for Small, Lightweight Items |
JUN 87 |
|
| Authors:
Larry A. Wood; AIR FORCE PACKAGING EVALUATION AGENCY WRIGHT-PATTERSON AFB OH MATERIALS ENGINEERING BRANCH
|
| This agency initiated a project to develop a multipurpose, low fragility container system for small, light-weight items. Former attempts to develop a system of this type have failed. The success of this effort is believed to be due to two factors. The first was a carefully constructed analytical model, calculated to reduce the number of variables introduced. This was achieved by using a cubical pack, with the resulting symmetry greatly ... |
|
| Human Factors Assessment: Light Armored Vehicle, Maintenance/Recovery Vehicle (LAVM/RV) |
DEC 86 |
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| Authors:
Gregory S. Krohn; ESSEX CORP ALEXANDRIA VA
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| This report describes the human factors evaluation of the Light Armored Vehicle Maintenance/Recovery Vehicle (LAVM/RV) that took place at Twentynine Palms, California, from December 1983 to April 1984. The evaluation was in conjunction with Operational Test II of the LAVM/RV conducted jointly by the Marine Corps Operational Test and Evaluation Agency (OTEA) and the Army OTEA. The report documents man-machine interface and safety problems recommended for correction before full-scale production ... |
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