Aerospace industry, assemblage of manufacturing concerns that deal with vehicular flight within and beyond Earth’s atmosphere. (The term aerospace is derived from the words aeronautics and spaceflight.) The aerospace industry is engaged in the research, development, and manufacture of flight vehicles, including unpowered gliders and sailplanes (see gliding), lighter-than-air craft (see balloon; airship), heavier-than-air craft (both fixed-wing and rotary-wing; see airplane; military aircraft), missiles (see rocket and missile system), space launch vehicles, and spacecraft (manned and unmanned).

No matter what industry your business is in, it's crucial to define your market, figure out how to reach it, and stay on top of changes
In this column, I am going to talk about the necessity for, and power of, marketing, no matter what industry or what stage your business is in. Including marketing in your plans may sound obvious, but when you are fighting all the battles necessary to keep a business going, it's easy to overlook (see BusinessWeek.com, 4/27/06, "Duct Tape Tips On Marketing Your Business").

Materials testing, measurement of the characteristics and behaviour of such substances as metals, ceramics, or plastics under various conditions. The data thus obtained can be used in specifying the suitability of materials for various applications—e.g., building or aircraft construction, machinery, or packaging. A full- or small-scale model of a proposed machine or structure may be tested. Alternatively, investigators may construct mathematical models that utilize known material characteristics and behaviour to predict capabilities of the structure.

Mass production, application of the principles of specialization, division of labour, and standardization of parts to the manufacture of goods. Such manufacturing processes attain high rates of output at low unit cost, with lower costs expected as volume rises. Mass production methods are based on two general principles: (1) the division ond specialization of human labour; and (2) the use of tools, machinery, and other equipment, usually automated, in the production of standard, interchangeable parts and products. The use of modern methods of mass production has brought such improvements in the cost, quality, quantity, and variety of goods available that the largest global population in history is now sustained at the highest general standard of living.

3D printing gear is now more affordable than ever, meaning you can come closer than ever before to the vision of a Star Trek-style replicator in your very own home. How does 3D printing, and how can you use it right now? Here’s what you need to know.