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Geometry Aircraft:     more books (55)

Reliability Analysis of the 4.5 Roller Bearing by Cole Miller, 2003 Test at a mach number of 2.0 on a rectangular, twin-duct air intake with variable geometry, situated in the flow field of a slender wing (Technical report) by M. D Dobson, 1968 Software Support Cost Estimating Models: A Comparative Study of Model Content and Parameter Sensitivity by Kevin L. Brummert, Philip Mischler, 1998 Users manual for the improved NASA Lewis ice accretion code LEWICE 1.6 (SuDoc NAS 1.26:198355) by William B. Wright, 1995 Aerodynamic shape optimization of a HSCT type configuration with improved surface definition progress report for the period ended June 30, 1994 (SuDoc NAS 1.26:197011) by A. M. Thomas, 1994 Aeroacoustic characteristics of a rectangular multi-element supersonic jet mixer-ejector nozzle (SuDoc NAS 1.26:195460) by Ganesh Raman, 1996 Ultra-high bypass ratio jet noise (SuDoc NAS 1.26:195394) by John, K. C. Low, 1994 Computational methods for global local analysis (NASA technical memorandum) by Jonathan B Ransom, 1992 Geometric modeling for computer aided design summary of research (final report) for the period ended June 30, 1995 (SuDoc NAS 1.26:198828) by James L. Schwing, 1995 Radiant energy measurements from a scaled jet engine axisymmetric exhaust nozzle for a baseline code validation case (SuDoc NAS 1.15:106686) by Joseph F. Baumeister, 1994 Sequential Transformation of Carbon Tetrachloride, Perchloroethylene, and 1,1, 1-Trichloroethane Using Methanogenic and Methanotrophic Conditions by Sarah J. Christ, 1997 Computer-aided light sheet flow visualization using photogrammetry (SuDoc NAS 1.60:3416) by Kathryn Stacy, 1994 HOMAR:a computer code for generating homotopic grids using algebraic relations users' manual (SuDoc NAS 1.26:4243) by Anutosh Moitra, 1989

lists with details

61. Continuous Moldline Technology
    to enable adaptation of aircraft geometry to different flight conditions and An air vehicle s external geometry largely dictates its aerodynamic,  
    http://www.afrlhorizons.com/Briefs/Dec02/VA0203.html
    
    Extractions: Adaptive structures technology development is currently of high interest in aeronautics, evidenced by many activities at the Defense Advanced Research Projects Agency, the National Aeronautics and Space Administration (NASA), and AFRL. Recent technology developments in compact actuators are providing a foundation for future adaptive structures applications. Some advanced materials enable an integral structure and actuation mechanism. The development of highly flexible structures, such as CMT, is also enabling to future adaptive structures applications. As shown in Figure 1, CMT consists of an elastomeric matrix, reinforced with stiffening rods that are able to slide within the matrix to achieve very high deformation. Researchers demonstrated CMT structures to 30% elongation and compression as well as very large bending and twisting deformation. While the wind tunnel testing verified some of the aerodynamic and control benefits associated with this application, transition of this technology would ultimately require the demonstration of CMT structure at the highest dynamic pressures and Mach numbers associated with a typical fighter aircraft flight environment. The team performed an analysis of test environments, cost, and data collection possibilities and identified the NASA F-15B Flight Test Fixture (FTF) as the best test bed for continuing the development of CMT.

62. Swing-wing - Slider
    The term variablegeometry is often used synonymously with swing-wing, meanwhile, adopted variable geometry for the Multi-Role Combat aircraft (MRCA)  
    http://enc.slider.com/Enc/Variable_geometry_wing
    
    Extractions: Vaz (Redirected from Variable geometry wing A swing-wing is a type of pivoted wing planform that attempts to combine the advantages of a swept wing at high speeds, while avoiding its problems at lower speeds. The design is successful in this respect, but the added mass and complexity are currently believed to outweigh the advantages. The term variable-geometry is often used synonymously with swing-wing, though strictly speaking swing-wing is a specific type of variable geometry. F-14 Tomcat with wings unswept F-14 Tomcat with wings swept Swing-wing aircraft developed from earlier experimental aircraft that were built to study the effects of a swept wing. The first of these was the Messerschmitt P.1101 which allowed its sweep angle to be changed on the ground. A number of test flights were carried out at various angles to try to examine the tradeoffs. At the end of World War II the P.1101 was taken to the United States for further study at Bell Aircraft , where further versions were built that could vary their angle in flight. One problem that was discovered while testing the Bell X-5 was that as the wing was pivoted rearward, the center of lift also moved to the rear, pushing the nose down. Some sort of system needs to be added to overcome this effect.

63. Gallery
    The geometry was also used to demonstrate the ability of the laser forming which protects the final geometry of the aircraft fitting illustrated above.  
    http://www.aerometcorp.com/Gallery.htm
    
    Extractions: Gallery Fully machined aircraft structural "Keel", (Titanium 6Al-4V), (L)aser (A)dditive (M)anufactured by AeroMet Corporation for the Boeing Company and exhibited at the Defense Manufacturing Conference, November 2001 in Las Vegas, Nevada. Image shown courtesy of the Boeing Company. Frank Arcella, CTO and Founder, AeroMet Corporation with fully machined aircraft structural "Spar" (Titanium 6Al-4V) LAM manufactured by AeroMet Corporation for the Boeing Company and exhibited at the Defense Manufacturing Conference, November 2001 in Las Vegas, Nevada. Image shown courtesy of the Boeing Company. The Laser Additive Manufacturing technique used by AeroMet to rapidly manufacture full scale aircraft components is illustrated in the following figures. The Laser Additive Manufacturing technique used by AeroMet to rapidly manufacture full scale aircraft components is illustrated in the following figures. The sample parts in the photo to the left illustrate the different types of geometries which have been laser formed at AeroMet. Some specific examples are described in greater detail below. A typical aerospace component is pictured at left in the as-formed and machined (inset) condition. This machining preform is approximately 36 inches (900 mm) in length. Protruding features such as stiffener ribs and bosses were deposited onto both sides of a conventional baseplate, with the baseplate providing the material for the webbing of the final machined structural component. Savings of 20-40% have been forecast for these components versus conventional approaches.

64. Aircraft Design Software Rev.
    This section includes descriptions of several purely geometry related programs. judged to be better than FLOFT/WLOFT for developing aircraft geometry.  
    http://www.aoe.vt.edu/~mason/Mason_f/ACDesSR/softgeom.html

65. SimHQ.com - Air Combat Zone - The Falcon 3.0 Manual Tactics Section - Introducti
    Attack geometry describes the path that the offensive fighter takes as he Where you position the nose of the aircraft is very important when a pilot  
    http://www.simhq.com/_air/air_038a.html
    
    Extractions: Homepage Air Combat Land Combat Naval Combat ... Community Links Feature Article The Falcon 3.0 Manual Tactics Section - Introduction to the Geometry of Air Combat by Ed "Skater" Lynch For those of you that are "old salts" when it comes to flight sims, and for those of you that are new to flight sims, this article should be of some value to you. This is largely a reprint from the manual of one of the best combat flight sims ever released. Spectrum Holobyte's Falcon 3.0 was indeed the father of all modern, "realistic" combat flight sims. The F3 manual was one hell of a paper weight. Weighing in at something like seven pounds, the F3 manual was jam packed with information on flying the sim, and the usage of tactics, and the deployment of weapons and the employment of the aircraft. Here is a little jewel from the tactics section. Enjoy!

66. X31 Aircraft Configuration
    The X31 is an experimental aircraft developed to test ultrahigh maneuverability via The geometry modeled includes the wings, fuselage, tail, canards,  
    http://www.centaursoft.com/examples/aerospace/x31/
    
    Extractions: The X31 is an experimental aircraft developed to test ultra-high maneuverability via the use of thrust vectoring. The aircraft is a supersonic aircraft with canards instead of a horizontal tail to control the pitch of the aircraft. The geometry modeled includes the wings, fuselage, tail, canards, engine inlet and the engine outlet. View Mesh Surface Mesh Hybrid Mesh - Isometric View Hybrid Mesh - Planar View The final grid contains: 996834 Total Nodes 2670521 Total Elements 1536906 Prisms 21989 Pyramids 1111626 Tetrahedra 107257 Total Boundary Faces 380 Panels 15 Boundary Groups 23126 faces in group: Fuselage 1799 faces in group: Farfield 15105 faces in group: Symmetry 7176 faces in group: Canard 636 faces in group: Canopy 7336 faces in group: Vertical Tail 5852 faces in group: Horizontal Half Tail 309 faces in group: Engine Outlet 627 faces in group: Engine Outlet Passage 157 faces in group: Engine Inlet 4361 faces in group: Engine Inlet Passage 4768 faces in group: Inboard Hardpoint 4621 faces in group: Outboard Hardpoint 24879 faces in group: Wing 6505 faces in group: Forewing All images shown have been produced using FieldView from Intelligent Light

67. Desktop Aeronautics, Inc.
    The designer can make minor and even major changes to the aircraft design Once a candidate design has been developed, the geometry can be output into a  
    http://www.desktopaero.com/products/RAGECatalogPage.html
    
    Extractions: (Java available for most platforms) RAGE allows for the generation of a variety of computational aerodynamic models from a central parameterized geometry definition. Designers can quickly and easily develop aircraft geometries that range from very simple to quite detailed for analysis with an assortment of computational aerodynamics tools. This allows the designer to avoid CADD-based preliminary design, which is often a bottleneck in efficiency. The designer can make minor and even major changes to the aircraft design very efficiently. Once a candidate design has been developed, the geometry can be output into a format most CADD systems can read for the next stage in the design process. Currently RAGE can generate aerodynamic models for the high-order panel code A502 and the Euler CART3D package (PLOT3D format). Development is ongoing for generating models for LinAir, overset Navier-Stokes analyses (such as OVERFLOW), and unstructured analyses (such as USM3D and FUN3D). Many different kinds of aircraft can be modeled with RAGE. Thus far several different aircraft configurations have been modeled including supersonic business jets, oblique flying wings, a modern sailplane, and a light sport general aviation airplane. Extensive nacelle and inlet integration and design (on supersonic business jets) has also been accomplished with RAGE. Many other geometries are possible including general aviation aircraft, conventional commercial transports, rockets, missiles, and similar designs. RAGE can also be customized to handle more specialized geometries by Desktop Aeronautics or directly by the user.

68. Desktop Aeronautics, Inc.
    A versatile aircraft geometry modeler for a wide range of computational aerodynamic analyses. Designers can quickly develop parameterized aircraft  
    http://www.desktopaero.com/software.html
    
    Extractions: This page contains short descriptions of our products and links to more detailed information. Please order products by phone, fax or email using this order form On-Line Manuals A library of manuals for Desktop Aeronautics software. PASS Program for Aircraft Synthesis Studies A powerful and full-featured aircraft preliminary design tool, allowing for rapid evaluations of design concepts. Incorporates a vortex-lattice model for evaluating low-speed performance, and linear axisymmetric theory for inviscid drag estimation. Prediction of ground signatures (sonic boom) for supersonic cases. Weight buildup and CG estimation with CG travel in-flight due to fuel burn. Full mission analysis based on the range of available analyses. Non-gradient based optimizer to allow for optimizations of configurations. Java-based, available for most platforms. RAGE Rapid Geometry Modeler A versatile aircraft geometry modeler for a wide range of computational aerodynamic analyses. Designers can quickly develop parameterized aircraft configuration models that can be very simple or quite detailed. RAGE is ideal for quick analyses, parametric trade studies, and especially optimization. Most aircraft designs can be modeled using the fuselage, wing, and nacelle components that are currently available as aircraft components. Geometry components and subcomponents can be easily customized by the user for specialized applications.

69. RAYMER RDS AIRCRAFT DESIGN CONCEPTUAL RESEARCH SHORTCOURSE
    of a credible aircraft configuration arrangement including external geometry, geometry, and propeller sizing. aircraft fuel system considerations.  
    http://www.aircraftdesign.com/shortcrs.html

70. RAYMER RDS AIRCRAFT DESIGN CONCEPTUAL RESEARCH SHORTCOURSE
    LECTURE 4 ANALYTICAL geometry FOR aircraft LOFT Geometric reference systems, Cartesian vectors, coordinate transformations, rotations and direction  
    http://www.aircraftdesign.com/newcrs.html
    
    Extractions: IN-HOUSE OFFERINGS: Contact Conceptual Research Corp. for price and schedule availability. This intensive two-day short course in aircraft configuration design, layout, and loft offers an in-depth presentation of the technical skills needed for creating a new and viable aircraft configuration design drawing, and includes an overview of aircraft surface definition and lofting. The class includes an overview of computer-aided configuration design and loft, and covers the key mathematics and graphical techniques for both CAD and drafting-table design layout and loft. Those attending will learn how to put a new aircraft design together, and will learn specific useful skills to create smooth aerodynamic contours, incorporate concerns for production and maintenance, and construct and model component intersections (including considerations for geometric input to CFD and RCS analysis). Primarily aimed at the working configuration design engineer in industry or government, the course is also useful for those who teach aircraft design and desire a better insight into "how it's really done."

71. Read About Fixed-wing Aircraft At WorldVillage Encyclopedia. Research Fixed-wing
    Fixedwing aircraft. Everything you wanted to know about Fixed-wing aircraft days of their development, these were termed variable geometry aircraft.  
    http://encyclopedia.worldvillage.com/s/b/Airplane
    
    Extractions: Culture Geography History Life ... WorldVillage (Redirected from Airplane Fixed-wing aircraft is a term used to refer to what are more commonly known as aeroplanes in Commonwealth English (excluding Canada) or airplanes in North American English Fixed-wing aircraft include monoplanes biplanes and triplanes ; in fact all conventional aircraft that are neither balloons airships autogyros helicopters or tiltrotors are fixed-wing aircraft. An American Airlines fixed-wing aircraft The term embraces a minority of aircraft that have folding wings, intended to fold when on the ground, perhaps to ease stowage or facilitate transport on, for example, a vehicle trailer or the powered lift connecting the hangar deck of an aircraft carrier to its flight deck. It also embraces an even smaller number of aircraft, such as the General Dynamics F-111 Aardvark Grumman F-14 Tomcat and the Panavia Tornado , which can vary the sweep angle of their wings during flight. In the early days of their development, these were termed "variable geometry" aircraft. When the wings of these aircraft are fully swept, usually for high speed cruise, the trailing edges of their wings abut the leading edges of their tailplanes, giving an impression of a single delta wing if viewed from above or below. There are also rare examples of aircraft which can vary the

72. Mty24.htm, AIRPORTS - Airport Geometry
    An airport provides takeoff, landing, and parking for aircraft. Current commercial and private aircraft can remain airborne for relatively short periods  
    http://www.unb.ca/web/transpo/mynet/mty24.htm
    
    Extractions: An airport provides takeoff, landing, and parking for aircraft. It also allows interchange between air transport service and other modes. Current commercial and private aircraft can remain airborne for relatively short periods of time. Only orbiting spacecraft overcome this limitation. Lighter than airships can remain in the air for long periods, but at present they are not important transport vehicles. The characteristics of the aircraft and traffic dictate the requirements. Airports began their evolution with the early flights by the Wright brothers. Early airports catered mostly to the small airplanes of the time. They required a relativly flat even surface so that straightline takeoffs and landings could take advantage of the wind conditions present when a landing or takeoff was attempted. High traffic airorts usually serve large metropolitan areas. Ideal airline service is nonstop direct from origin to destination airports. This usually means that ideally there are a range of traffic loads and trip lengths that vary from the smallest to the largest practical aircraft capacities and flight distances. Many studies have shown that air travel cannot compete with surface modes when the surface time is about two hours or less. For even three or four hour surface trips air travel may not be competitive. With current aircraft and ground transport speeds the critical unencumbered distance is between 300 and 400 km.

73. The Cambridge-MIT Institute -
    The CambridgeMIT Institute s Silent aircraft Initiative was launched in on weight and fuel efficiency by using a variable geometry exhaust system.  
    http://silentaircraft.org/
    
    Extractions: Research Contacts The Cambridge-MIT Institute's 'Silent' Aircraft Initiative was launched in November 2003 with a bold aim: to discover ways to reduce aircraft noise dramatically, to the point where it would be virtually unnoticeable to people outside the airport perimeter. Silent Aircraft Initiative brochure (Adobe pdf format, file size: 643KB) Silent Aircraft Initiative one-page flyer (Adobe pdf format, file size: 376KB) The approach of the 'Silent' Aircraft 10 November 2003 The initiative aims to improve competitiveness in the UK aerospace sector by changing the way research is undertaken, through extensive collaboration with a much wider franchise of stakeholders than ever before. By embracing this larger community, the Silent Aircraft Initiative seeks to produce a truly optimised concept design that contributes to the prosperity of the UK in an environmentally sustainable way.

74. Gridgen Application - Geometry Repair On The C-5 Aircraft
    C5 Transport aircraft geometry Repair. (an example of work described in the paper Gridgen s Synergistic Implementation of CAD and Grid geometry Modeling ,  
    http://www.pointwise.com/apps/c5.shtml
    
    Extractions: Company Products Gridgen Support ... Site Map Search: Applications Aerospace 727 T-Tail 747 Nacelle Airfoils Apache AH-64D ... X-29 Automotive Exhaust Gas Ahmed Body Acoustics Wind Tunnel Model ... Helical Intake Chemical Process Combustor Thermal Spray Electromagnetics Gyrotron Americas Cup 2000 Dalles Dam Fin Optimization ... Yacht Keel Materials Cyclonic Separator Other Carotid Artery Swine Linkage Arm IGES Test Case ... Bats Power Generation Turbomachinery Advanced Turbine Volute Quick Links Try Gridgen FREE! Request Product Literature Current Release: Gridgen V15.08 Read Native CAD Files ... Focal Point, our newsletter An example of work described in the paper "Gridgen's Synergistic Implementation of CAD and Grid Geometry Modeling", from the proceedings of the 5th International Conference on Numerical Grid Generation in Computational Field Simulations, held at Mississippi State University, 01-05 Apr 96. The goal of this study is to demonstrate some of Gridgen's geometry modeling tools that are useful in repairing geometry models in preparation for gridding. Useful features of Gridgen shown in this study are: removing extraneous components from a geometry model to make the grid generation process simpler

75. Weight, Geometry, Lift, Drag And Thrust Properties.
    aircraft geometry. A typical aircraft planform layout is shown below. The wing planform area (S) is shaded as shown. The wing taper ratio can be calculated  
    http://www.ae.su.oz.au/aero/perf/perf_ac.html
    
    Extractions: maximum landing weight. It is not simply a matter of adding the components together to obtain a final answer for the aircraft weight. For example it may be necessary to remove fuel weight so that additional payload may be carried while still maintaining the requirement of a maximum take-off weight. For stability and hence flight safety considerations an accurate "weight and balance" calculation should be performed prior to the flight of the aircraft. In flight the aircraft weight will change as fuel is burnt by the propulsion system or possibly dumped in an emergency situation.

76. Geometry Project
    From geometry Generator to Numerical Simulation and Windtunnel tests. The geometry Generator E88 is designed especially for aircraft definition.  
    http://www.pagendarm.de/trapp/geometry/
    
    Extractions: The Geometry Generator is designed especially for aircraft definition. A Series of different generators from this series support several aircraft speeds and configuration types. The geometry definition is different from conventional CAD systems. First some 2 dimensional key curves are specified. The curves are compositions of different basic curves like arcs, quintics, splines etc. The keys specify characteristic lines such as the crownlines or planform of an airplane. Special functions calculate the 3 dimensional model from the 2 dimensional curves. The functions are specialized to the different configuration types such as low speed, transonic or supersonic transport. Special algorithms can be used for smooth connections between wings and bodies. We destinguish between wing-type and body-type parts. Proven airfoil sections from catalogs or which have already been tested, can be used for wing definition. The body cross sections are for example given by superelliptical functions, box type shapes or refined cross sections derived by special flow modelling calculations.

77. Tyndall MACA 7
    depending on the human, type of aircraft, and geometry of the collision situation. On top of this time, aircraft reaction time must be added.  
    http://www.tyndall.af.mil/MACA/maca07.htm
    
    Extractions: Click Here for Reaction Time and Closure Rate Chart 1. Closure Speed: This chart shows the effect of closure speed. Size is that of a F-15 aircraft. Times and distances shown are based on "head on" closure speeds. Assuming 12 seconds to perceive another aircraft and then avoid it, the chart shows that recognition under 3 miles will normally result in a collision. 2. Reaction Time: The time to perceive and recognize an aircraft, become aware of a collision potential, and decide appropriate action, may vary from as little as 2 or 3 seconds to 10 seconds or more, depending on the human, type of aircraft, and geometry of the collision situation. On top of this time, aircraft reaction time must be added. Also remember that any evasive action contemplated should include maintaining visual contact with other aircraft, if practical. Click here for a Chart of the Geometry of a Collision Course GUIDE TO AN EFFICIENT SCAN How well do you scan? Next time you are out and about, check yourself. See how long you go without looking out the window. If you find that you glance out and give the old one-two without stopping to focus on anything or you stare out into one spot for an extended period of time, your "scan" is inadequate and you may be headed for an in-flight collision. So what can you do? LEARN AN EFFICIENT SCAN PATTERN! There are currently two basic methods that have proven best for pilots. The first, is the "side to side" (figure 1). Start at the far left of your visual area and make a methodical sweep to the right, pausing in each block to focus. At the end of the scan, return to your instruments. The second is the "front to side" (figure 2). Start with a fixation in the center of the block of your visual field. Move your eyes to the left, focusing in each block, swing quickly back to the center block, and repeat the procedure to the right.

78. Read From 'Simplified Aircraft Design For Homebuilders' By Daniel P. Raymer ...
    aircraft Conceptual Design resources for industry, academia, and research Selection of wing geometry comes next, along with airfoil selection and tail  
    http://www.atlasbooks.com/marktplc/rr00839.htm

79. DARPA Defense Sciences Office - Morphing Aircraft Structures
    The Morphing aircraft Structures (MAS) Program seeks to create and advance enabling Examples of specific controlled geometry changes include,  
    http://www.darpa.mil/dso/thrust/matdev/mas.htm

80. Program For Aircraft Synthesis Studies
    PASS Program for aircraft Synthesis Studies. This page provides a 3D view of the airplane geometry. Performance Trade Studies The effect of weight and  
    http://adg.stanford.edu/aa241/pass/pass4.html

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