RBI HYDRAULIC BREAKER USER MANUAL. 2. How the Tool Breaks Rock. The following paragraphs describe what happens to break rock when the piston strikes the tool. (A)Contact-Initial Compression Stress Wave. When the piston (1) strikes the top of the tool (2), it sends a compressive stress wave (3) down to the.
And Counter means counter, exactly as in English. Poise means weight. So the word literally means counterweight and that is what a counterpoise is in an antenna system, where it was originally used. Simply put, a ground plane that the antenna system could mirror itself in.
The parabolic dish antenna is the form most frequently used in the radar engineering of installed antenna types of. Figure 1 illustrates the parabolic antenna. A dish antenna consists of one circular parabolic reflector and a point source situated in the focal point of this reflector.This point source is called âprimary feedâ or âfeedâ. The circular parabolic (paraboloid) reflector is constructed of metal, usually a frame covered by metal mesh at the inner side. dish antenna consists of one circular parabolic reflector and a point source situated in the focal point of this reflector. This point source is called âprimary feedâ or âfeedâ.