Computer Modeling in the Aerospace Industry

Iftikhar B. Abbasov

• Publisher: Wiley-Scrivener
• Year: 2019
• ISBN:
  9781119682301
• Edition: 1
• Topic: Technik & Maschinenbau
• Subtopic: Luft- & Raumfahrttechnik

Devoted to advances in the field of computer simulation of aerospace equipment, this study is the most up-to-date coverage of the state-of-the-art on coastal and passenger aircraft, drones, and other recent developments in this constantly changing field.

This book is devoted to unique developments in the field of computer modeling in aerospace engineering. The book describes the original conceptual models of amphibious aircraft, ground-effect vehicles, hydrofoil vessels, and others, from theory to the full implementation in industrial applications.

The developed models are presented with the design of passenger compartments and are actually ready for implementation in the aircraft industry. The originality of the concepts are based on biological prototypes, which are ergonomic, multifunctional and aesthetically pleasing. The aerodynamic layout of prospective convertible land and ship-based aircrafts of vertical and short takeoff-landing is presented, as well as the development of the original model of the unmanned aerial vehicle, or drone. The results of full-scale experiments are presented, including the technology of modeling aerospace simulators based on the virtual reality environment with technical vision devices.

Whether for the practicing engineer in the field, the engineering student, or the scientist interested in new aerospace developments, this volume is a must-have.

This groundbreaking new volume:

• Presents unique developments of coastal aircraft concepts based on biological prototypes, from the idea to the finished model
• Gives the process of modeling the original unmanned aerial vehicle
• Investigates aerospace simulators based on virtual reality environment with technical vision devices
• Covers the original ideas of creating carrier-based aviation for sea ships and the results of field experiments simulating an unmanned aerial vehicle
• Provides many useful illustrations of naval aviation

Audience:

The book is intended for aerospace engineers, mechanical engineers, structural engineers, researchers and developers in the field of aerospace industry, for aircraft designers and engineering students. It will be useful for scientists, students, graduate students and engineers in the field of naval aviation and space simulators.

Chapter 1
Computer Simulation in Aircraft

Iftikhar B. Abbasov

Southern Federal University, Engineering Technological Academy, Department of Engineering Graphics and Computer Design, Taganrog, Russia

Email: [email protected]

Abstract

The first chapter is devoted to the use of computer simulation in aircraft construction. The process of designing a conceptually new aircraft based on bionic forms is described. Presents search visual and graphical solutions of the developed model. Three-dimensional modeling of the structural parts of the aircraft was carried out according to draft designs. To simulate three-dimensional surfaces, the Koons method is used. The issues of solid-state modeling of a space rocket using the lofting method and the Be-200 amphibious aircraft were also considered. Also considered is the conceptual design of the new car. When creating the concept of a car body design, a bionic shape of lotus petals is used. Prototypes of car body contours are designed as draft designs. For three-dimensional modeling of structural parts of the car, polygonal extrusion method was applied. A three-dimensional computer model of the developed car concept is presented. For clarity, scenes are presented rendering of shaded three-dimensional models of simulated objects.

Keywords: Conceptual model, flight of bats, three-dimensional modelling, aircraft, car, bionics

1.1 Simulation of Aircraft

To simulate a certain aircraft [1, 34], the graphic system of three-dimensional modeling Mechanical Desktop is used. In this system, it is possible to carry out modeling of both technical objects and elements of the interior or landscape. To create three-dimensional models, the following commands are used: _extrude_ (extrusion), _revolve_ (rotation), _sweep_ (bending) and _loft_ (lofting). The simplest and most obvious of the 3D commands is the _extrude_ command. To create a three-dimensional body, a profile sketch is extruded along the third axis for a distance equal to a given body thickness. The profile can be extruded in any direction or in two directions at once (the so-called extrusion from the middle plane). The transformation of the sketch into a three-dimensional model is carried out after some restrictions are imposed on it. The process of imposing restrictions includes creating a profile or imposing dimensional restrictions.

Creating a model consists of several stages:

1. – at the first stage, we determine the sequence of creation of structural parts and the corresponding methods for this;
2. – at the second stage we carry out the general assembly and completion of the device as a whole;
3. – at the third stage, to create a realistic model, we perform toning and final rendering of the model of the aircraft.

At the first stage, we will create an aircraft wing in the form of an oblique wedge surface. To do this, we draw profiles of the wing on the working planes, and the creation of the wing itself is carried out by the loft method (the method of supporting sections). In the three-dimensional mechanical modeling system Mechanical Desktop, the loft method is implemented using the _loft_ command. First we create two working planes and build wing profiles on them, then we translate each figure into a profile, that is, we impose restrictions. After selecting the _loft_ command, we indicate the wing profiles in succession to the request. We create the second wing using the mirror reflection of the built wing and place them along the future fuselage.

At the second stage, to create the fuselage, we again select the same method of support sections. In this case, the support sections can play the role of guide frames. The result of the construction of the fuselage support sections (four) with wings is presented in the form of a frame model in Fig. 1.1.

Using the _loft_ command, we build the fuselage surface, and to create a jet engine nozzle, we use the _extrude_ command using the subtraction method. Then, to create realistic scenes of a three-dimensional model, we assign textures and light sources. Next we select the background for the scene as a photograph of the Earth from orbit. The rendering scene is shown in Fig. 1.2. It should be noted that this scene can be modeled in other three-dimensional systems; however, this graphic system allows you to make the design documentation of the object.

Fig. 1.1 The three-dimensional wireframe model aircraft.

Fig. 1.2 Scene of rendering of the aircraft from the Earth’s orbit.

1.2 Simulation of Rocket

Let’s create a solid model of a rocket using the lofting method [35, 36] in the AutoCAD graphic system. To use the loft method, you must create the initial path of the loft and the cross-section in the form of flat figures. In the top view, with the help of two-dimensional primitives, it is necessary to construct rocket cross-sectional figures; in the front view, the axis of the rocket height is constructed. Further, the cr...

Table of contents

• Cover
• Title Page
• Copyright
• Dedication
• Abstract
• Preface
• Chapter 1: Computer Simulation in Aircraft
• Chapter 2: Conceptual Modeling of Amphibian Aircrafts
• Chapter 3: Development of Schemes of Multirotor Convertiplanes with Cryogenic and Hybrid Powerplants
• Chapter 4: Conceptual Design of A Multifunctional Amphibious Plane
• Chapter 5: Mathematical Model of Unmanned Aircraft with Elliptical Wing
• Chapter 6: Technology of Geometric Modeling of Dynamic Objects and Processes of Virtual Environment for Aviation-Space Simulators Construction
• Index
• End User License Agreement