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    Aerospace engineering is the branch of engineering that concerns aircraft, spacecraft, and related topics. Originally called aeronautical engineering and dealing solely with aircraft, the broader term "aerospace engineering" has replaced the former in most usage, as flight technology advanced to include craft operating outside the Earth's atmosphere.
    In analogy with "aeronautical engineering", the branch is sometimes referred to as astronautical engineering, although this term usually only concerns craft which operate in outer space.


        Aerospace engineering
            Overview
            History
            Elements
            Popular culture
            Aerospace engineering degrees
            See also
                Major aerospace corporations

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    Overview
    Modern flight vehicles must undergo severe conditions such as differences in atmospheric pressure and temperature, or heavy structural load applied upon vehicle components; numerous matters must be taken into account. Consequently, they are usually products of complex synthesis of various technologies and sciences, including but not limited to aerodynamics, materials science and electronics. The knowledge and the process of combining these various branches of studies are what is collectively known as aerospace engineering. This complex characteristic keeps a single aerospace engineer from involving in the entire task; rather, aerospace engineering is conducted by a team of engineers, each specializing in their own branches of science. The development and manufacturing of a flight vehicle is basically a process to carefully balance and compromise between the abilities, performance, available technology and costs.

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    History

    The origin of modern-day aerospace engineering can be traced back to the aviation pioneers around the turn of the century from the 19th century to the 20th. Early knowledge of aeronautical engineering was largely empirical with some concepts and skills imported from other branches of engineering, The definition considered the Earth's atmosphere and the outer space as a single realm, thereby encompassing both aircraft (aero) and spacecraft (space) under a newly coined word aerospace.



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    Elements
    Some of the elements of aerospace engineering are:


      Astrodynamics - the study of orbital mechanics including manipulation, determination, and prediction of orbital elements when given a select few variables. While few schools in the United States teach this at the undergraduate level, several have graduate programs covering this topic (usually in conjunction with the Physics department of said college or university).
      Dynamics and engineering mechanics - the study of movement, forces, moments in mechanical systems.
      Mathematics - as most subjects within aerospace engineering involve equations and mathematical manipulation and derivations, a solid and comprehensive study of mathematics is required to enable effective learning in the other modules.
      Aircraft structures - design of the physical configuration of the craft to withstand the forces encountered during flight. Aerospace engineering aims very much at keeping structures lightweight.
      Materials science - related to structures, aerospace engineering also studies the materials of which the aerospace structures are to be built. New materials with very specific properties are invented, or existing ones are modified to improve their performance.
      Aeroelasticity - the interaction of aerodynamic forces and structural flexibility, potentially causing flutter, divergence, etc.
      Avionics - specifically concerning the design and programming of any computer systems on board an aircraft or spacecraft and the simulation of systems. Navigation equipment may be the focus of this study.
      Risk and reliability - the study of risk and reliability assessment techniques and the mathematics involved in the quantitative methods.
      Noise control - the study of the mechanics of sound transfer. Required as noise levels are a massive consideration in the current aerospace industry.
      Flight test - the discipline of designing and executing flight test programs in order to gather and analyze performance and handling qualities data in order to determine if an aircraft meets its design and performance goals and certification requirements.

    The basis of most of these elements lies in theoretical mathematics, such as fluid dynamics for aerodynamics or the equations of motion for flight dynamics. However, there is also a large empirical component. Historically, this empirical component was derived from testing of scale models and prototypes, either in wind tunnels or in the free atmosphere. More recently, advances in computing have enabled the use of computational fluid dynamics to simulate the behavior of fluid, reducing time and expense spent on wind-tunnel testing.

    Additionally, aerospace engineering addresses the integration of all components that constitute an aerospace vehicle (subsystems including power, communications, thermal control, life support, etc.) and its life cycle (design, temperature, pressure, radiation, velocity, life time), leading to extraordinary challenges and solutions specific to the domain of aerospace systems engineering. It is uncommon for an aerospace engineer to view and comprehend all the components of the involved project.

    See List of aerospace engineering topics.

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    Popular culture
    Popular culture has not been unaffected by this branch of engineering. The term "rocket scientist" is at times used to describe a person of remarkable or in the considered context higher than average intelligence. Aerospace engineering has also been represented as the more "glittery" pinnacle of engineering. The movie Apollo 13 depicts the ground team as a group of heroes in a Hollywood fashion glorifying the intelligence and competence of white shirt and tie professionals as a sharp contrast to pop culture trends. This was later extended in more detail in the spin-off series From the Earth to the Moon.

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    Aerospace engineering degrees
    Aerospace (or aeronautical) engineering can be studied at the bachelors, masters, and Ph.D. levels in aerospace engineering departments at many universities, and in mechanical engineering departments at others.

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    See also

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    Major aerospace corporations






     
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    This article is licensed under the GNU Free Documentation License [copyleft]. It uses material from the Wikipedia article "Aerospace engineering". link