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Book

Advances in Aeroacoustics

2010-06-01
The importance of aeroacoustics for the aerospace industry cannot be underestimated. It is vital in terms of traveler comfort, environmental perception and industry expansion. This special edition of the International Journal of Aeroacoustics contains 12 papers originally presented at the Noise & Turbulence: Perspectives Past & Present Symposium (2009: University of Southampton). The symposium was held in honor of Professor Geoffrey M. Lilley, a multi-faceted educator and researcher. Selected are the papers specific to aeroacoustics covering aerodynamic noise theory, airframe noise, flow control, and experimental jet noise studies. Topics include a brief biography of Lilley, the relation between the generalized acoustic analogy and Lilley's contributions to aeronautics, solving the Lilley equation with quadrupole and dipole jet noise sources, hot jets and sources of jet noise, wave packet modules for large-scale mixing noise, and plasma actuators for noise control. Editor Dr.
Magazine

Aerospace Engineering 2011-09-07

2011-09-07
Hypersonic possibilities When it comes to reviving high-speed air travel, it all comes down to propulsion, propulsion, propulsion. Shrinking electronics help fuel rising usage Integration helps UAVs carry more sensors and send data faster, making unmanned aircraft more valuable. A greener flight path 'Eco-efficient Innovation Leading the Future of Aviation' is the theme of SAE's 2011 AeroTech conference to be held OCt. 18-21 in Toulouse, France. Manufacturing advanced materials A look at some of the challenges of additive layer manufacturing, as well as the advantages it brings to the aerospace industry.
Magazine

Aerospace Engineering 2006-05-01

2006-05-01
Materials mature The growth of air travel has always been dependent on the development of materials technology for structures and engines. Keeping track of production Aircraft manufacturers are making greater use of RFID and bar code technology, while also using new software that helps them keep production lines running smoothly. Breaking records via fuel management Onboard sensors reported lower-than-expectedfuel-tank readings not far into the around-the-world flight of the GlobalFlyer, jeopardizing the entire mission.
Book

Polymers in Aerospace Applications

2010-01-01
This review report gives an overview of how polymers are used in aerospace applications. Some of the topics covered are composites, including thermosets, thermoplastics and nanocomposites; fiber reinforcement of composites; and specialized applications. For each type of composite, the chemistry, cure methods, fabrication methods, mechanical properties, thermal properties and environmental degradation are considered. From the applications’ perspective, the title discusses sealants, structural adhesives, foams, primer paint, shape memory alloys, electroactive devices, MEMS, vibration damping, NLO properties and ablative polymers. This review report is accompanied by approximately 400 abstracts compiled from the iSmithers Polymer Library, the largest dedicated resource of polymer information in the world, to facilitate further reading on this subject. A subject index and a company index are included.
Magazine

Tech Briefs: April 2018

2018-04-01
Laser Detecting Systems Enhancing Survivability and Lethality on the Battlefield Designing With Plastics for Military Equipment Engine Air-Brakes Paving the Way to Quieter Aircraft Nett Warrior Enhancing Battlefield Connectivity and Communications XPONENTIAL 2018 - An AUVSI Experience Communications in Space: A Deep Subject First Air-Worthy Metal-Printed RF Filter Ready for Takeoff Validation of Automated Prediction of Blood Product Needs Algorithm Processing Continuous Non-Invasive Vital Signs Streams (ONPOINT4) Using a combination of non-invasive sensors, advanced algorithms, and instruments built for combat medics could reduce hemorrhaging and improve survival rates. Calculation of Weapon Platform Attitude and Cant Using Available Sensor Feedback Successful development of mobile weapon systems must incorporate operation on sloped terrain.
Book

Field Guide to Lidar

2015-01-01
Field Guide to Lidar covers the various components and types of active electro-optical sensors—referred to as lidars in the text—from simple 2D direct-detection lidars to multiple sub-aperture synthetic aperture lidars. Other topics covered include receivers, apertures, atmospheric effects, and appropriate processing of different lidars. Lasers and modulation are presented in terms of their use in lidars. The lidar range equation in its many variations is discussed along with receiver noise issues that determine how much signal must be received to detect an object. Field Guide to Lidar is a handy reference to quickly look up any aspect of active electro-optical sensors. It will be useful to students, lidar scientists, or engineers needing an occasional reminder of the correct approaches or equations in certain applications, and systems engineers interested in gaining a perspective on this rapidly growing technology.
Book

LiDAR Technologies and Systems

2019-07-10
LiDAR is one of many active sensor technologies that uses electromagnetic radiation. Operating in the optical and infrared wavelengths, it is similar to more-familiar passive EO/IR sensor technology. It is also similar to radar in that it uses reflected electromagnetic radiation emitted by the sensor. LiDAR is commonly used for making high-resolution maps and has applications in geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swath mapping, and laser altimetry. It is also being used for control and navigation of some autonomous cars. The first part of LiDAR Technologies and Systems introduces LiDAR and its history, and then covers the LiDAR range equation and the link budget (how much signal a LiDAR must emit in order to get a certain number of reflected photons back), as well as the rich phenomenology of LiDAR, which results in a diverse array of LiDAR types.
Book

An Introduction to Microelectromechanical Systems Engineering

2004-01-01
Bringing you up-to-date with the latest developments in MEMS technology, this major revision of the best-selling An Introduction to Microelectromechanical Systems Engineering offers you a current understanding of this cutting-edge technology. You gain practical knowledge of MEMS materials, design, and manufacturing, and learn how it is being applied in industrial, optical, medical and electronic markets. The second edition features brand new sections on RF MEMS, photo MEMS, micromachining on materials other than silicon, reliability analysis, plus an expanded reference list. With an emphasis on commercialized products, this unique resource helps you determine whether your application can benefit from a MEMS solution, understand how other applications and companies have benefited from MEMS, and select and define a manufacturable MEMS process for your application. You discover how to use MEMS technology to enable new functionality, improve performance, and reduce size and cost.
Article

Curtiss-Wright black boxes receive European approval

2019-02-19
Curtiss-Wright Corporation’s Fortress line of combined cockpit voice recorders (CVRs) and flight data recorders (FDRs) are now have European Technical Standard Order (ETSO) approval. The devices, commonly referred to as “black boxes,” will surpass the requirements of an upcoming 2021 European Union Aviation Safety Agency (EASA) mandate that requires CVRs are capable of recording for up to 25 hours per flight.
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