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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Dynamics modeling and simulation of flexible airships

Li, Yuwen, January 1900 (has links)
Thesis (Ph.D.). / Written for the Dept. of Mechanical Engineering. Title from title page of PDF (viewed 2008/05/09). Includes bibliographical references.
2

The role of technology in the failure of the rigid airship as an invention

Bradshaw, Price, January 1975 (has links)
Thesis--University of Florida. / Description based on print version record. Typescript. Vita. Includes bibliographical references (leaves 284-295).
3

The airship's potential for intertheater and intratheater airlift

Ryan, Donald E. January 1900 (has links)
Thesis--School of Advanced Airpower Studies, Maxwell Air Force Base, academic year 1991-92. / Shipping list no.: 1998-0921-M. "June 1993." Includes bibliographical references (p. 53-58). Also available via Internet from the Air University Press web site. Address as of 11/5/03: http://aupress.au.af.mil/SAAS%5FTheses/Ryan/ryan.pdf; current access is available via PURL.
4

Experimental characterization and simulation of a tethered aerostat with controllable tail fins

Howard, Alistair John George. January 1900 (has links)
Thesis (M.Eng.). / Written for the Dept. of Mechanical Engineering. Title from title page of PDF (viewed 2008/05/13). Includes bibliographical references.
5

Über die Spannungsverteilung auf den Hüllen von Prall-Luftschiffen

Heyer, Karl. January 1913 (has links)
Thesis (Dr. techn. Wiss.): Kgl. Technischen Hochschule zu Müchen, 1912. / eContent provider-neutral record in process. Description based on print version record.
6

The naval airship and the revolution at sea.

Shelby, James Richard. January 1990 (has links) (PDF)
Thesis (M.S. in Operations Research)--Naval Postgraduate School, September 1990. / Thesis Advisor(s): Hughes, Wayne P. Second Reader: Jackson, John E. "September 1990." Description based on title screen as viewed on December 21, 2009. DTIC Descriptor(s): Airships, Military Operations, Ships, Sizes(Dimensions), Naval Vessels, Ocean Surface, Models, Threats, Navy, Teams(Personnel), Costs, Surfaces, Military Force Levels, Area Defense, Fire Control Systems, Battle Group Level Organizations, Extrapolation, Surface Launched. DTIC Identifier(s): Airship, Fire Control Systems, Blimp, Lighter-than-air, SLAT Missile, Anti Ship Cruise Missile(ASCM), Over-the-horizon Targeting, Theses. Author(s) subject terms: Airship, Blimp, Lighter-than Air, SLAT Missile, Anti-ship Cruise Missile (ASCM), Over-the-Horizon Targeting. Includes bibliographical references (p. 136-138). Also available in print.
7

Development of an indoor blimp with ionic propulsion system. / 配備離子推進系統之室內飛艇的開發 / Pei bei li zi tui jin xi tong zhi shi nei fei ting de kai fa

January 2009 (has links)
Poon, Ho Shing. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2009. / Includes bibliographical references (leaves 66-69). / Abstracts in English and Chinese. / ACKNOWLEDGEMENTS --- p.III / TABLE OF CONTENTS --- p.IV / TABLE OF FIGURES --- p.VI / LIST OF TABLES --- p.IX / Chapter CHAPTER 1: --- INTRODUCTION --- p.1 / Chapter 1.1 --- Intrinsic Problem of Conventional Aerodynamic Flying Devices --- p.1 / Chapter 1.2 --- Novel Ionic Propulsion Technology - Ionic Flyer --- p.2 / Chapter 1.3 --- Historical Development and Related Work of Ionic Flyer --- p.2 / Chapter 1.4 --- Existing Results in Our Group --- p.3 / Chapter 1.5 --- Objective and Current Achievements --- p.4 / Chapter 1.6 --- Organization of the remaining thesis --- p.5 / Chapter CHAPTER 2: --- FUNDAMENTAL KNOWLEDGE OF IONIC FLYERS --- p.6 / Chapter 2.1 --- Basic structure of Ionic Flyers --- p.6 / Chapter 2.2 --- Working Principle of Ionic Flyers --- p.7 / Chapter 2.3 --- Parametric models of the Ionic Flyers --- p.8 / Chapter 2.3.1 --- Electrical Current-Voltage Model --- p.8 / Chapter 2.3.2 --- Mechanical Lift-Force Model --- p.9 / Chapter CHAPTER 3: --- STRUCTURAL ANALYSIS OF IONIC FLYERS --- p.11 / Chapter 3.l --- Analysis on the Electrode Length --- p.11 / Chapter 3.2 --- Analysis on the Emitter radius --- p.12 / Chapter 3.3 --- Analysis on the Gap Distance between Emitter and Collector --- p.13 / Chapter 3.4 --- Analyses on the Emitter-Collector Electrodes Configuration --- p.15 / Chapter 3.4.1 --- Single-Emitter-Single-Collector Wire-Plate Configuration --- p.15 / Chapter 3.4.2 --- Multiple-Emitter-Single-Collector Wire-Plate Configuration --- p.16 / Chapter 3.4.3 --- Single-Emitter-Multiple-Collector Wire-Plate Configuration --- p.17 / Chapter 3.4.4 --- Single-Emitter-Surface-Collector Wire-Plate Configuration --- p.19 / Chapter 3.5 --- Summary - Optimization Design Methodology --- p.21 / Chapter CHAPTER 4: --- HIGH VOLTAGE POWER GENERATION SYSTEM --- p.22 / Chapter 4.1 --- Existing Marketable High Voltage Power Supplies --- p.22 / Chapter 4.2 --- design of the High Voltage Power Supply --- p.24 / Chapter 4.2.1 --- Battery --- p.25 / Chapter 4.2.2 --- Step-up Transformer --- p.25 / Chapter 4.2.3 --- Voltage Multiplier --- p.26 / Chapter 4.2.4 --- Driving Circuit --- p.27 / Chapter 4.3 --- Testing prototypes --- p.28 / Chapter 4.3.1 --- First Prototype --- p.28 / Chapter 4.3.2 --- Second Prototype --- p.29 / Chapter 4.3.3 --- Third Prototype --- p.30 / Chapter 4.3.4 --- Fourth Prototype --- p.31 / Chapter 4.3.5 --- Comparison of the Four Prototypes --- p.32 / Chapter 4.4 --- Performance of the High Voltage Power Supply --- p.34 / Chapter 4.4.1 --- Vary with Frequency --- p.34 / Chapter 4.4.2 --- Vary with Duty Cycle --- p.34 / Chapter 4.4.3 --- Efficiency --- p.35 / Chapter 4.5 --- Resonance Frequency Tracking Algorithm --- p.36 / Chapter 4.5.1 --- Fixed Frequency --- p.37 / Chapter 4.5.2 --- Scan Through a Frequency Range --- p.37 / Chapter 4.5.3 --- Continuous Comparison of Feedback Voltages --- p.38 / Chapter 4.5.4 --- Comparison of the Three Approaches --- p.40 / Chapter 4.6 --- Possibility Analysis on Self-Sufficient On-board Power Supply --- p.41 / Chapter 4.6.1 --- Analysis Based on the Parametric models --- p.41 / Chapter 4.6.2 --- Proposed Solution - Ionic Propulsion Blimp --- p.43 / Chapter CHAPTER 5: --- DEVELOPMENT OF IONIC PROPULSION BLIMP --- p.44 / Chapter 5.l --- Design and Structure of Ionic Propulsion Blimp --- p.44 / Chapter 5.1.1 --- Required Volume of the Blimp --- p.45 / Chapter 5.1.2 --- Initial Experimental results of Ionic Propulsion Blimp --- p.46 / Chapter 5.2 --- Advanced Navigation System for Ionic Propulsion Blimp --- p.47 / Chapter 5.2.1 --- Direction Control System --- p.47 / Chapter 5.2.2 --- Vision-Based Sensing and Control System --- p.48 / Chapter 5.3 --- Experimental results of the Advanced Navigation System --- p.55 / Chapter 5.3.1 --- Manual Control for Directional Movement --- p.55 / Chapter 5.3.2 --- Object Tracking using L-K Feature Tracking method --- p.56 / Chapter 5.3.3 --- Object Tracking using CamShift method --- p.57 / Chapter 5.3.4 --- Short summary for Vision-Based Control --- p.57 / Chapter CHAPTER 6: --- FURTHER DEVELOPMENT --- p.58 / Chapter 6.1 --- Improvement on Fabrication of Ionic Flyer --- p.58 / Chapter 6.2 --- Feasibility study on decreasing the operation voltage by minimizing the Gap Distance --- p.59 / Chapter 6.3 --- Improvement of the Design of Ionic Propulsion Blimp --- p.60 / Chapter 6.3.1 --- Design of Configuration of the Navigation System --- p.60 / Chapter 6.3.2 --- Design of the Ionic Flyer --- p.60 / Chapter 6.4 --- Commercialization Issue --- p.61 / Chapter 6.4.1 --- Safety Concerns --- p.61 / Chapter 6.4.2 --- Potential Application of Ionic Propulsion Technology --- p.63 / Chapter CHAPTER 7: --- CONCLUSION --- p.64 / BIBLIOGRAPHY --- p.66 / PUBLICATIONS --- p.69
8

Rebirth of the cool : to awake a sleeping beauty

Magnusson, Oscar January 2007 (has links)
My project is split in two, one theoretical part and one empirical part. The first part is based on existing theories within design and marketing. I focused my research on management theories, research methods and consumer behavior theories. The second part is based upon a case study "Rebirth of the airship", where I test the method identified in the first part. The case study also includes a straight forward design process and a qualitative field research. In the final part of the project I conclude my findings and reflect upon the work method and the result at hand.
9

Grundeigentum und Luftschiffahrt : unter besonderer Berücksichtigung der Schadensersatzpflicht des Luftschiffes /

Lange, Kurth. January 1913 (has links)
Thesis (doctoral)--Universität Erlangen, 1913. / Includes bibliographical references (p. [vii]-x).
10

EYE IN THE SKY: AIRSHIP SURVEILLANCE

Sullivan, Arthur, Turner, William C. 11 1900 (has links)
International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada / The first airship was invented and designed in 1852 by Henri Giffard, a French engineer. Airships were used by both the Allied and German military for surveillance and bomb dropping in WWI. There was a steady increase in airship use up until the Hindenburg exploded while docking in 1937 at Lakehurst, New Jersey. This tragedy almost ended the use of airships. Significant use of airships next occurred during WWII for submarine surveillance and depth charging. Airships for advertising, surveillance, and command control came of age in the late 1980s and early 1990s. Airships can be fitted with several telemetry options or instrumented with sensor systems for surveillance purposes. The telemetry or sensor data can be relayed, real-time, to a remote station as much as 150 km from the airship either encrypted or plain when cruising at 3000 feet altitude. Small vehicles (3 meters long) can be detected at 50 km using radar; 12 km using FLIRs; and, depending on weather conditions and real-time imaging processing, up to 20 km using video cameras. Cooperating airborne targets can be tracked out to 150 km. The major advantages of the airship over conventional aircraft are: • ENDURANCE Up to 20 hours without refueling. • LOW OPERATING COST Less than the cost of a helicopter. • SHOCK-FREE ENVIRONMENT Allows commercial electric equipment usage. • VIBRATION-FREE ENVIRONMENT Yields personnel comfort and endurance. • SAFETY Safer than any aircraft, automobile, or bicycle.

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