- Industry: Government
- Number of terms: 35337
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A duct that has a decreasing cross section in the direction of flow (convergent) until a minimum area is reached. After this point, the cross section increases (divergent). Convergent-divergent ducts are called CD ducts or con-di ducts.
Industry:Aviation
A duct that has a decreasing cross section in the direction of flow.
Industry:Aviation
A duct that has an increased cross-sectional area in the direction of flow.
Industry:Aviation
A duct, or passage, that surrounds an object. The annular fan-discharge duct surrounds the core engine.
Industry:Aviation
A field pole in a compound-wound DC generator used to minimize armature reaction. Interpoles are located between each of the regular field poles, and their coils are in series with the armature winding so all of the armature current flows through them. The magnetic field produced by the interpole coils cancels the distortion caused by the armature field and allows the brushed to remain in the neutral plane where there is no potential difference between the commutator segments. Keeping the brushes in the neutral plane minimizes sparking.
Industry:Aviation
A fine-wire spark plug that has a platinum center electrode and iridium ground electrodes.
Industry:Aviation
A fire extinguisher that carries the extinguishing agent in a sealed sphere or cylinder. When the agent-discharged switch is closed, an ignited powder charge drives a cutter through a frangible disk which releases the agent. The entire contents of the container is emptied in much less than a second.
Industry:Aviation
