218
218
Jul 9, 2010
07/10
by
ANTONIDES, G. J
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A TEMPERATURE CYCLING TEST FACILITY HAS BEEN DESIGNED AND CONSTRUCTED FOR THE STUDY OF THERMAL STRESS AND FATIGUE IN SOLAR ARRAYS. TWO BELL JAR TYPE THERMAL VACUUM CHAMBERS AND THEIR ASSOCIATED EQUIPMENT AND INSTRUMENTATION PROVIDE CLOSE SIMULATION OF THE SPACE ENVIRONMENT, AUTOMATIC TEMPERATURE CYCLING AND DATA ACQUISITION, AND ECONOMICAL OPERATION.
Topics: HYDROGEN, LIQUID AIR CYCLE ENGINES, TURBOROCKET ENGINES, FUEL CONSUMPTION, HEAT EXCHANGERS, LIQUID...
Zapfluft und Wellenleistung wird den Triebwerken entnommen, um die Energie für beispielsweise die Kraftstoffpumpen, das Inflight Entertainment oder die Flügelvorderkantenenteisung zu erzeugen. Diese Energiegenerierung, hat einen Anstieg des Kraftstoffverbrauches zur Folge. Es hat sich herausgestellt, dass die Stelle der Zapfluftentnahme einen starken Einfluss auf den Gradienten des Brennstoffverbrauches hat. Das Projekt beschäftigt sich mit zwei- und dreiwelligen Turbofantriebwerken und...
Topics: Luftfahrt, Luftfahrzeug, Flugtriebwerk, Sekundärenergie, aeronautics, aerospace engineering,...
National Agricultural Library
52
52
Oct 14, 2015
10/15
by
Ahouissoussi, Nicolas B. C; Wetzstein, Michael Eugene; United States. Department of Agriculture. Economic Research Service
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Cover title
Topics: Diesel motor Alternate fuels Costs, Compressed natural gas Costs, Methanol as fuel Costs, Buses...
4
4.0
Nov 12, 2020
11/20
by
Alexander Bolonkin
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In several important previous works [1,2,8-24], each based on the laws of conservation of energy and momentum, the author proposed a new type of rocket engine. The innovated rocket engine extracts energy from the atmosphere as it moves through the atmosphere and uses the harnessed energy to create a powerful propelling thrust. The author shows that if the mass of gas from which the engine is repelled is several times greater than the mass of gas that the engine brakes when receiving energy,...
Topics: In several important previous works [1, 2, 8-24], each based on the laws of conservation of energy...
45 p. 22 cm
Topic: Locomotives -- Fuel consumption
248
248
Jun 1, 2011
06/11
by
Anderson, David N.; Botura, Galdemir C.; Broeren, Andy P
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The Ruff method with matched scale and reference velocity was used to determine appropriate 1/2-scale test conditions to simulate a full-size icing encounter for an NACA 23012 wing section protected with a pneumatic boot deicing system. Intercycle ice accretions were recorded on a 36-in-chord model used to represent 1/2-scale and compared with a hybrid reference model (full-size leading-edge and truncated aft section) representing a 72-in-chord full-size airfoil. The intercycle ice thickness...
Topics: FUEL CONSUMPTION, XYLENE, PARAFFINS, ELECTRODES, CRACKS, DETERIORATION, FUEL-AIR RATIO, GASKETS,...
99
99
May 22, 2011
05/11
by
Barnes, Jeff R
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The Mars pathfinder MET experiment will make pressure, temperature, and wind measurements on the surface of Mars. The Viking Lander Meteorology Experiment measurements were marked by the presence of variations associated with synoptic weather disturbances throughout the fall and winter season. Numerical simulations of the Mars atmospheric circulation show that the winter midlatitudes are the center of activity for traveling disturbances of planetary scale, disturbances that have their...
Topics: BASE FLOW, DRAG REDUCTION, POROSITY, PRESSURE DISTRIBUTION, SURFACE VEHICLES, AERODYNAMIC DRAG,...
2
2.0
Jun 8, 2020
06/20
by
Beaton, W. Patrick
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281 pages ; 24 cm
Topics: Transportation and state -- United States -- Mathematical models, Vehicles -- Fuel consumption --...
Purpose - This master thesis evaluates the hybrid-electric aircraft project E-Fan X with respect to its economical and environmental performance in comparison to its reference aircraft, the BAe 146-100. The E-Fan X is replacing one of the four jet engines of the reference aircraft by an electric motor and a fan. A turboshaft engine in the cargo compartment drives a generator to power the electric motor. --- Methodology - The evaluation of this project is based on standard aircraft design...
Topics: Luftfahrt, Luftfahrzeug, Elektroantrieb, Flugmechanik, Betriebskosten, Kraftstoffverbrauch,...
Purpose of this project is a) the evaluation of the Thrust Specific Fuel Consumption (TSFC) of jet engines in cruise as a function of flight altitude, speed and thrust and b) the determination of the optimum cruise speed for maximum range of jet airplanes based on TSFC characteristics from a). Related to a) a literature review shows different models for the influence of altitude and speed on TSFC. A simple model describing the influence of thrust on TSFC seems not to exist in the literature....
Topics: Luftfahrt, Luftfahrzeug, Flugmechanik, Flugtriebwerk, aeronautics, airplanes,...
423
423
Jul 23, 2010
07/10
by
Benz, Frank J.; Zhu, S
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Tests in which metals were rubbed against themselves in oxygen have revealed that increasing oxygen pressure does not always increase the potential for ignition. It is believed that there exists a specific pressure above which convective heat loss due to higher oxygen density will overcome the potential increase in the oxidation rate afforded by the increase in oxygen pressure. Test results have shown that, once a specific oxygen pressure is exceeded, greater rates of frictional energy were...
Topics: AIRCRAFT CONTROL, TERRAIN FOLLOWING, APPROACH CONTROL, FLIGHT PATHS, MANEUVERS, TRAJECTORY...
14
14
Oct 30, 2018
10/18
by
Bjornlund, Lydia, 1961-
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80 pages : 24 cm
Topics: Alternative fuel vehicles, Automobiles -- Fuel consumption, Automobiles -- Technological...
Fuel efficiency is a priority for the Chief of Naval Operations (CNO), as stated in the CNO’s Position Report: 2014. While a number of fuel-saving measures have been implemented in recent years, the effects of operational transit speed on fuel consumption have not been adequately understood as a variable. Ships’ commanding officers use fuel-usage curves to determine the most efficient propulsion-plant speed. Fuel efficiency is typically gauged by maintaining a consistent optimal speed....
Topics: OTTER, fuel optimization, transit fuel planner, fuel savings, fuel consumption, replenishment at...
529
529
May 29, 2011
05/11
by
Blanchard, Robert C.; Wilmoth, Richard G.; Glass, Christopher E.; Merski, N. Ronald, Jr.; Berry, Scott A.; Bozung, Timothy J.; Tietjen, Alan; Wendt, Jodean; Dawson, Do
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Major elements of an experiment called the Infrared Sensing Aeroheating Flight Experiment are discussed. The primary experiment goal is to provide reentry global temperature images from infrared measurements to define the characteristics of hypersonic boundary-layer transition during flight. Specifically, the experiment is to identify, monitor, and quantity hypersonic boundary layer windward surface transition of the X-33 vehicle during flight. In addition, the flight data will serve as a...
Topics: AIRCRAFT ENGINES, WAVE ROTORS, DESIGN ANALYSIS, GAS TURBINE ENGINES, DISTRIBUTION FUNCTIONS,...
305
305
May 31, 2011
05/11
by
Blandino, Joseph R
texts
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Experiments were performed and results obtained to determine the temperature dependence of the modulus of elasticity for a thermoplastic isogrid tube. The isogrid tube was subjected to axial tensile loads of 0-100 lbf and strain was measured at room and elevated temperatures of 100, 120, 140, 160, 180, 190, and 200 F. These were based on tube manufacturer specifying an incorrect glass transition temperature of 210 F. Two protocols were used. For the first protocol the tube was brought to...
Topics: THERMODYNAMIC CYCLES, COMPUTATIONAL FLUID DYNAMICS, AIR BREATHING ENGINES, PULSE DETONATION...
2
2.0
Jul 19, 2020
07/20
by
Bleviss, Deborah Lynn
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xiv, 268 p. : 25 cm
Topics: Automobiles -- Fuel consumption, Automobiles -- Technological innovations, Energy policy
Naval Postgraduate School
22
22
May 3, 2019
05/19
by
Burns, Joseph; Cibull, Sarah; Cohort 311-142M; Colby, Kye; Gardner, Benjamin; Monera, Shaun; Streeter, Jared; Team E2O
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TheUnited States Marine Corps is too dependent on fossil fuel, which leaves logistics fuel support and supply lines vulnerable to attack, potentially degrading Marine Corps capabilities and ultimately putting Marines at risk. A need exists to identify doctrine, organization, training, materiel, leadership and education, personnel, and facilities (DOTMLPF) changes that provide a positive impact on energy efficiency while maintaining or improving operational effectiveness, essentially improving...
Topics: systems engineering, model based systems engineering, fuel consumption, close air support, ground...
In order to uncover the best kept secret in today’s commercial aviation, this project deals with the calculation of fuel consumption of aircraft. With only the reference of the aircraft manufacturer’s information, given within the airport planning documents, a method is established that allows computing values for the fuel consumption of every aircraft in question. The aircraft's fuel consumption per passenger and 100 flown kilometers decreases rapidly with range, until a near constant...
Topics: Luftfahrt, Luftfahrzeug, Flugmechanik, Flugtriebwerk, aeronautics, airplanes,...
Purpose – Find optimal flight and design parameters for three objectives: minimum fuel consumption, Direct Operating Costs (DOC), and environmental impact of a passenger jet aircraft. --- Approach – Combining multiple models (this includes aerodynamics, specific fuel consumption, DOC, and equivalent CO2 mass) into one generic model. In this combined model, each objective's importance is determined by a weighting factor. Additionally, the possibility of further optimizing this model by...
Topics: Luftfahrt, Flugzeugaerodynamik, Flugmechanik, Betriebskosten, Flugzeug, Flugtriebwerk,...
287
287
Jul 9, 2010
07/10
by
Campbell, J. F.; Schetz, J. A
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The development of a theoretical model is investigated of the incompressible jet injection process. The discharge of a turbulent jet into a cross flow was mathematically modeled by using an integral method which accounts for natural fluid mechanisms such as turbulence, entrainment, buoyancy, and heat transfer. The analytical results are supported by experimental data and demonstrate the usefulness of the theory for estimating the trajectory and flow properties of the jet for a variety of...
Topics: AIR TRANSPORTATION, ECONOMIC FACTORS, ENERGY BUDGETS, COMBUSTION EFFICIENCY, ENERGY DISSIPATION,...
206
206
Jul 23, 2010
07/10
by
Carlson, Leland A
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A versatile inviscid direct-inverse wing design method and program were developed. Also developed was an additional design strategy option to the program.
Topics: AIRCRAFT MANEUVERS, FIGHTER AIRCRAFT, FUEL CONSUMPTION, TIME DEPENDENCE, CONTROL THEORY, CRUISING...
250
250
Jun 15, 2011
06/11
by
Casasent, D
texts
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Advanced problems in computational fluid dynamics, finite element structural analysis, and related areas require the solution of large partial differential equations and matrices of large size and dynamic range. This project considers an advanced parallel linear algebra processor and associated novel parallel algorithms for such applications. Research on system fabrication, quantitative performance evaluation and new parallel algorithms are described and considered. Case studies in structural...
Topics: FUEL CONSUMPTION, OPTIMAL CONTROL, POSITIONING, SPIN STABILIZATION, ALGORITHMS, BOUNDARY VALUE...
A method of optimizing the selection of a powerplant based upon engine and fuel weight is developed for use in a conceptual helicopter design course. Historical data is analyzed to verify and modify existing formulae used to estimate engine performance and engine installation weight Computational programs for use on a hand-held computer and the IBM 3033 are developed to predict analytically engine fuel flow characteristics and to optimize engine selection.
Topics: Aeronautics, Engine, Turboshaft engine, Powerplant selection, Helicopter design, Fuel consumption,...
This research examines the requirements of a capability portfolio for protecting a maritime force against a conventional small boat swarm attack. It provides decision makers with insights gleaned from exploring the trade space between weapon consumption, fuel consumption, and cost against the need to protect the force. Such an attack can deplete a force's resources and create risk to overall mission accomplishment. In this research, the Iranian training attack on a mock U.S. aircraft carrier in...
Topics: small boat swarm, small boat threat, tradeoff studies, operational energy, weapon consumption, fuel...
Zweck – In dieser Bachelorarbeit werden die öffentlich nicht zugänglichen Technologieparameter von Passagierflugzeugen näherungsweise bestimmt. Das sind maximaler Auftriebsbeiwert bei Start und Landung, maximale Gleitzahl und spezifischer Kraftstoffverbrauch im Reiseflug. Folgende Flugzeuge werden paarweise untersucht und verglichen: A340-300 und IL-96-300, Boeing 727-200 Advanced und TU-154M, Fokker 100 und MD-82, A319-100 und An-72. --- Methodik – Die Berechnung erfolgt mit dem...
Topics: Luftfahrt, Luftfahrt, Luftfahrzeug, Passagierflugzeug, Reverse Engineering, Luftfahrttechnik,...
65
65
Aug 30, 2018
08/18
by
Clemens Pellenwessel
texts
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This report is written for the NASA/DLR Design Challenge 2018 in order to design an Ultra Efficient Passenger Aircraft of the future. It will indicate, how the Breguet range equation can be used as a simple but significant model for the fuel consumption on transportation aircrafts. There is an increasing public, political and economic demand for reducing the fuel consumption for aircrafts. In order to meet this interest, this evaluation will present how Aircraft Design can make a contribution...
Topics: Aircraft Design, Breguet range equation, payload range diagram, Fuel fraction, specific fuel...
225
225
Jul 21, 2010
07/10
by
Colburn, D. S.; Reynolds, R. T
texts
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Electrical currents should flow in the Galilean satellite, Europa, because it is located in Jupiter's corotating magnetosphere. The possible magnitudes of these currents are calculated by assuming that Europa is a differentiated body consisting of an outer H2O layer and a silicate core. Two types of models are considered here: one in which the water is completely frozen and a second in which there is an intermediate liquid layer. For the transverse electric mode (eddy currents), the calculated...
Topics: AUTOMOBILE ENGINES, PROPULSION SYSTEM CONFIGURATIONS, ROTORS, SEALS (STOPPERS), SILICON CARBIDES,...
293
293
Jul 11, 2010
07/10
by
Conner, D. W.; Thompson, G. O
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Active controls technology offers great promise for significantly smoothing the ride, and thus improving public and air carrier acceptance, of certain types of transport aircraft. Recent findings which support this promise are presented in the following three pertinent areas: (1) Ride quality versus degree of traveler satisfaction; (2) significant findings from a feasibility study of a ride smoothing system; and (3) potential ride problems identified for several advanced transport concepts.
Topics: AIR TRANSPORTATION, TURBOPROP AIRCRAFT, AIRLINE OPERATIONS, COMMERCIAL AIRCRAFT, COST ANALYSIS,...
246
246
May 6, 2010
05/10
by
Craig, A. J.; Flugge-Lotz, I
texts
eye 246
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Pontryagin optimal principle applied to control system problems where optimization criterion is minimum fuel consumption
Topics: CRITERIA, FUEL CONSUMPTION, OPTIMAL CONTROL, OPTIMIZATION, PONTRYAGIN PRINCIPLE, FUEL CONSUMPTION,...
We explore the United StatesNavy's surface fleet policies and practices that, if changed, could provide significant fuel savings for fossil fuel ships. Recent and potential future budget cuts give fuel conservation and efficiency extreme importance. The policies and practices explored incur no overhead cost, and to reap the benefits of these changes, we simply need to prudently change in the way we operate. Conducting drift operations 10% of the nights while underway can save the Navy $14.1...
Topics: Fuel, efficiency, surface fleet, fuel savings, fuel consumption, Military Sealift Command, Transit...
0
0.0
Mar 5, 2021
03/21
by
D. C. Driver, President; A. B. Guha, Member; J. W. Whitaker, Member; M. V. Kamlani, Member
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Topics: Locomotives - Fuel consumption, Locomotives Economic aspects - India, Locomotives - Fuel, Railroads...
246
246
Jun 16, 2014
06/14
by
Daniel Sperling
texts
eye 246
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Topics: Transportation, Automotive -- Environmental aspects, Alternative fuel vehicles, Motor fuels, Motor...
0
0.0
Sep 28, 2019
09/19
by
Davidson, Jim
texts
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123 p. ; 18 cm
Topics: Automobiles -- Fuel consumption, Automobiles -- Carburants -- Consommation
This thesis explains how the classified design parameters of existing passenger jets can be determined. The classified design parameters are; the maximum lift coefficient for landing and take-off, the maximum aerodynamic efficiency and the specific fuel consumption. The entire concept is based on the preliminary sizing of jet powered civil aeroplanes. This preliminary sizing is explained in detail because it is the foundation of the final result. The preliminary sizing is combined using reverse...
Topics: Luftfahrt, Luftfahrzeug, Passagierflugzeug, Reverse Engineering, Luftfahrttechnik, Aerodynamik,...
Two diesel engines representative of the four-stroke cycle and two-stroke cycle main propulsion units installed in U.S. Coast Guard WPB class cutters were operated in a test environment in an attempt to demonstrate significant fuel savings associated with water-in-fuel emulsions. The engines were connected to a dynamometer in a laboratory test cell. A prototype fuel system was assembled that would supply unstabilized emulsions for which the water concentration could range form zero to 25...
Topics: DTIC Archive, Coon,C W , Jr, SOUTHWEST RESEARCH INST SAN ANTONIO TX, *DIESEL ENGINES, *WATER, *FUEL...
The primary objective of this work is to demonstrate improved fuel economy of a M1078-A1R vehicle through the application of hybrid hydraulic technology. A secondary objective is to evaluate ways that hybrid hydraulic technology may be applied to benefit ancillary vehicle functions and enhance the mission usefulness of the vehicle. A hybrid hydraulic drivetrain was designed, developed, and integrated into a M1079-A1R vehicle.
Topics: DTIC Archive, SOUTHWEST RESEARCH INST SAN ANTONIO TX BELVOIR FUELS AND LUBRICANTS RESEARCH...
This report presents the results of the annual General Aviation and Air Taxi Activity and Avionics Survey. The survey is conducted by the FAA to obtain information on the activity and avionics of the United States registered general aviation and air taxi aircraft fleet. The report contains breakdowns of active aircraft, annual flight hours, average flight hours and other statistics by manufacturerlmodel group, aircraft type, state and region of based aircraft, and primary use. Also included are...
Topics: DTIC Archive, DIMENSIONS INTERNATIONAL INC ALEXANDRIA VA, *CIVIL AVIATION, AVIONICS, FLIGHT...
The United States Army Aviation Engineering Flight Activity conducted level flight performance tests of the OH-58C helicopter at Edwards AFB, California from 22 September to 20 November 1981, and at St. Paul, Minnesota, from 12 January to 9 February 1982. Nondimensional methods were used to identify effects of compressibility and blade stall on performance, and increased referred rotor speeds were used to supplement the range of currently available level flight data. Maximum differences in...
Topics: DTIC Archive, Belte, Daumants, ARMY AVIATION ENGINEERING FLIGHT ACTIVITY EDWARDS AFB CA, *FLIGHT...
This report is comprised of two parts. In Part I a predictive model for an apparent flame length in a co-axial jet diffusion flame combustor is described. According to this model a diffusion flame is considered as thin cylindrical reactive zone composed of chemically active and dead regions. Fuel consumption by surface oxidation is assumed. Mass transport of oxygen to the reactive surface is considered to control the overall combustion process. Overall mass transfer coefficient, evaluated from...
Topics: DTIC Archive, Sandhu,S S, DAYTON UNIV OH DEPT OF CHEMICAL ENGINEERING, *Flames, *Combustion, *Jet...
During the period from 29 September - 17 October 2014, the U. S. Army Natick Soldier Research, Development and Engineering Center (NSRDEC) collected data on technologies related to the objectives of the SLB-STO-D at the Base Camp Integration Laboratory (BCIL), Fort Devens, MA. The goal of the SLB-STO-D is to demonstrate through operationally relevant field experimentation and subsequent analysis that emerging materiel solution technologies and associated non-materiel solutions can reduce the...
Topics: DTIC Archive, Benasutti,Patrick B, ARMY NATICK SOLDIER RESEARCH DEVELOPMENT AND ENGINEERING CENTER...
This report examines short- and long-term measures to reduce the consumption of petroleum jet fuels by the Air Force. Engine retrofits and aerodynamic modifications to existing aircraft can save significant quantities of jet fuel; however, savings in fuel expenditures are not enough to offset high initial costs of engine retrofits. If accomplished early in an aircraft's life cycle, relatively lower costs of modest aerodynamic modifications may be recoverable through savings in fuel...
Topics: DTIC Archive, Gebman,J R, RAND CORP SANTA MONICA CALIF, *JET ENGINE FUELS, *ENERGY CONSERVATION,...
Regression analysis is used to estimate the effects of a ship's steaming on the failure rate of its equipment, holding constant the effects of other factors such as a ship's class, fleet, time since overhaul, and point in the deployment cycle. Equipment failures are measured with data on 14,000 CASREPTs for destroyer-type ships in 1970-75. It is widely thought that steaming would increase the number of equipment failures because of more wearout. However, we find the failure rate of equipment...
Topics: DTIC Archive, LGoldberg,Lawrence, CENTER FOR NAVAL ANALYSES ALEXANDRIA VA INST OF NAVAL STUDIES,...
This study developed data on General Electric common core derivative engines for use in Maritime Patrol Aircraft (MPA) concept formulation studies. The study included the screening of potential General Electric turbofan and turboprop/turboshaft engines and the preparation of technical and planning information on three of the most promising engine candidates. Screening of General Electric derivative candidates was performed utilizing an analytical MPA model using synthesized mission profiles to...
Topics: DTIC Archive, Hirschkron,R, GENERAL ELECTRIC CO LYNN MA AIRCRAFT ENGINE GROUP, *TURBOPROP ENGINES,...
This report describes follow-on work performed under the auspices of AE 4900, Directed Studies in Aeronautical Engineering at the Naval Postgraduate School, to complement the original design of a Flight Performance Advisory System (FPAS) for the E-2C aircraft. The original design fulfilled the requirements of AE 3001, Aircraft Energy Conservation. AE 3001, offered in the Fall Quarter 1981, and conducted by Professor Allen E. Fuhs, was sponsored in part by the Naval Air Development Center...
Topics: DTIC Archive, Ferrell, Dennis R., NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *FUEL CONSUMPTION,...
Mission profiles and maintenance procedures relating to the T56-A-14 turboprop engine were investigated to develop duty cycle information. This information was applied to a derivative engine designated as the 501-M71. A survey of fleet squadron pilots revealed that two profiles account for the majority of flight hours; anti-submarine warfare and pilot training. The T56 duty cycle was compared with the duty cycle for the 501-M71 derivative. The T56 uses twice as many cycles but less than one...
Topics: DTIC Archive, Cote,S M, NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA AIRCRAFT AND CREW SYSTEMS...
Ammonia can be used successfully as a spark ignition engine fuel and at presently existing compression ratios, if introduced as a vapor and if first partly dissociated to hydrogen and nitrogen. Under such circumstances little engine modification is necessary other than a means for flow control of the ammonia and adjustment of the spark timing. Maximum experimental power output for ammonia was 72 per cent of that for iso-octane. This result compares favorably with a theoretically predicted...
Topics: DTIC Archive, CALIFORNIA UNIV BERKELEY THERMAL SYSTEMS DIV, *AMMONIA, PERFORMANCE(ENGINEERING),...
This report completes the research conducted on the regenerator section of Advancement of Small Gas Turbine Engine Component Technology. Work conducted by the Boeing Company under this task also included research on high- temperature turbine materials and high-pressure-ratio centrifugal compressors. The regenerator program covered by this report was started in May, 1964, and included (1) analytical studies of the heat transfer and pressure drop characteristics associated with small diameter,...
Topics: DTIC Archive, Wheeler, Anthony J, BOEING CO SEATTLE WA TURBINE DIV, *HEAT EXCHANGERS, *GAS...
The report describes the development of the rotor for the 2.8:1 single stage supersonic axial compressor design. The rotor performance was evaluated through experimental testing with the inlet guide vanes but without the exit stator. The experimental results are analyzed and compared to the design data and criteria. Although a circumferential flow distortion at the rotor exit prevented a very accurate assessment of the performance potential, the data provided ample evidence that the rotor...
Topics: DTIC Archive, Muller, Charles H, CURTISS-WRIGHT CORP WOOD-RIDGE NJ, *GAS TURBINE ROTORS, *GAS...
DOD and the military services estimate total funding needs for fuel in annual budget requests by using planned consumption (measured in barrels of fuel) and a standard price per barrel set by DOD. Senate Report 114-49, accompanying a bill for the National Defense Authorization Act for fiscal year 2016, included a provision for GAO to review DODs approach to estimating fuel consumption. Among other objectives, this report (1) describes the military services reported actual spending on fuel...
Topics: DTIC Archive, Russell,Cary, U.S. Government Accountability Office Washington United States,...
This study investigated the feasibility of using a microsatellite to accomplish an orbital rendezvous with a noncooperative target, with a focus on the control laws necessary for achieving such a rendezvous. The relative motions of the microsatellite and the target satellite are described using Hill's equations. The results of an investigation of two different controller methodologies show that an impulsive thrust controller based on the Clohessey-Wiltshire solution used little fuel, but was...
Topics: DTIC Archive, Tschirhart, Troy A, AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF...
