Author: Joel Beckerman
Publisher: Houghton Mifflin Harcourt
ISBN: 0544191749
Category : Business & Economics
Languages : en
Pages : 213
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Book Description
A guide to the effective use of sound in marketing, revealing the surprising ways sound can influence our emotions, opinions, and preferences
Author: United States. National Bureau of Standards
Publisher:
ISBN:
Category : Buildings
Languages : en
Pages : 32
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Book Description
Author: United States. Environmental Protection Agency
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
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Book Description
Author: North Atlantic Treaty Organization. Research and Technology Organization
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 342
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Book Description
Contains the lecture notes prepared for a Special Course on Fluid Dynamics Research on Supersonic Aircraft organized by the RTO Applied Vehicle Technology Panel (AVT). The Course was held at the von Kármán Institute for Fluid Dynamics (VKI) Institute, Rhode-Saint-Genèse, Belgium 25-29 May 1998. The following topics were covered: History & Economics of Supersonic Transports, Supersonic Aerodynamics, Sonic Boom Theory and Minimization, Multi-Point Design Challenges, Vortex Plume Interactions, Propulsion System Design. Presentations on the major world wide supersonic transport programs were also included. The material assembled in this publication was prepared under the combined sponsorship of the RTO Applied Vehicle Technology Panel, the Consultant and Exchange Program of RTO, and the von Kármán Institute (VKI) for Fluid Dynamics.
Author: Lawrence R. Benson
Publisher:
ISBN: 9781626830042
Category : Aerodynamics, Supersonic
Languages : en
Pages : 388
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Book Description
Author: Harvey H. Hubbard
Publisher:
ISBN:
Category : Sonic boom
Languages : en
Pages : 52
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Book Description
Author: Florian Ion Petrescu
Publisher: BoD – Books on Demand
ISBN: 3848229900
Category : Science
Languages : en
Pages : 82
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Book Description
The Doppler effect (or Doppler shift), named after Austrian physicist Christian Doppler who proposed it in 1842 in Prague, is the change in frequency of a wave for an observer moving relative to the source of the wave. It is commonly heard when a vehicle sounding a siren or horn approaches, passes, and recedes from an observer. The received frequency is higher (compared to the emitted frequency) during the approach, it is identical at the instant of passing by, and it is lower during the recession. The relative changes in frequency can be explained as follows. When the source of the waves is moving toward the observer, each successive wave crest is emitted from a position closer to the observer than the previous wave. Therefore each wave takes slightly less time to reach the observer than the previous wave. Therefore the time between the arrival of successive wave crests at the observer is reduced, causing an increase in the frequency. While they are travelling, the distance between successive wave fronts is reduced; so the waves \\\\\\\"bunch together\\\\\\\". Conversely, if the source of waves is moving away from the observer, each wave is emitted from a position farther from the observer than the previous wave, so the arrival time between successive waves is increased, reducing the frequency. The distance between successive wave fronts is increased, so the waves "spread out". For waves that propagate in a medium, such as sound waves, the velocity of the observer and of the source is relative to the medium in which the waves are transmitted. The total Doppler Effect may therefore result from motion of the source, motion of the observer, or motion of the medium. Each of these effects is analyzed separately. For waves which do not require a medium, such as light or gravity in general relativity, only the relative difference in velocity between the observer and the source needs to be considered.
Author: Kevin A. Bradley
Publisher:
ISBN: 9780309446846
Category : Aerodynamic noise
Languages : en
Pages : 179
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Book Description
Abstract: "Commercial space launch vehicle activities are expected to continue to increase. As they begin testing and become operational, many noise issues as well as the effects from sonic booms will need to be evaluated. The Aviation Environmental Design Tool (AEDT) is designed to evaluate the effects of noise and emissions from aircraft, but doesn't have the ability to predict noise and sonic boom effects from commercial space operations. Two tools were developed in this project to predict noise and sonic boom to be used in the noise modeling evaluation process. RUMBLE 2.0 predicts rocket noise, and PCBoom4 was modified to predict sonic boom from commercial space operations. ACRP Research Report 183 is the user's guide for each tool, and ACRP Web-Only Document 33: Commercial Space Operations Noise and Sonic Boom Modeling and Analysis is the contractor's final report on the methodology and development of these tools."
Author: Russell J. Foster
Publisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 76
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Book Description
Author: Antonio Filippone
Publisher: Elsevier
ISBN: 0080461034
Category : Technology & Engineering
Languages : en
Pages : 594
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Book Description
Calculation and optimisation of flight performance is required to design or select new aircraft, efficiently operate existing aircraft, and upgrade aircraft. It provides critical data for aircraft certification, accident investigation, fleet management, flight regulations and safety. This book presents an unrivalled range of advanced flight performance models for both transport and military aircraft, including the unconventional ends of the envelopes. Topics covered include the numerical solution of supersonic acceleration, transient roll, optimal climb of propeller aircraft, propeller performance, long-range flight with en-route stop, fuel planning, zero-gravity flight in the atmosphere, VSTOL operations, ski jump from aircraft carrier, optimal flight paths at subsonic and supersonic speed, range-payload analysis of fixed- and rotary wing aircraft, performance of tandem helicopters, lower-bound noise estimation, sonic boom, and more.This book will be a valuable text for undergraduate and post-graduate level students of aerospace engineering. It will also be an essential reference and resource for practicing aircraft engineers, aircraft operations managers and organizations handling air traffic control, flight and flying regulations, standards, safety, environment, and the complex financial aspects of flying aircraft. - Unique coverage of fixed and rotary wing aircraft in a unified manner, including optimisation, emissions control and regulation. - Ideal for students, aeronautical engineering capstone projects, and for widespread professional reference in the aerospace industry. - Comprehensive coverage of computer-based solution of aerospace engineering problems; the critical analysis of performance data; and case studies from real world engineering experience. - Supported by end of chapter exercises
