impulse load
81Rotary Rocket — Rotary Rocket, Inc, was a rocketry company headquartered in a convert|45000|sqft|m2|sing=on facility at Mojave Airport that developed the Roton concept in the late 1990s as a fully reusable Single Stage to Orbit (SSTO) manned spacecraft. Roton… …
82Rivet — A rivet is a mechanical fastener. Before it is installed it consists of a smooth cylindrical shaft with a head on one end. The end opposite the head is called the buck tail. On installation the rivet is placed in a pre drilled hole. Then the tail …
83Rise time — In electronics, when describing a voltage or current step function, rise time (also risetime) refers to the time required for a signal to change from a specified low value to a specified high value. Typically, these values are 10% and 90% of the… …
84405-line television system — The 405 line monochrome analogue television broadcasting system was the first fully electronic television system to be used in regular broadcasting. It was introduced with the BBC Television Service in 1936, suspended for the duration of World… …
85Impact wrench — An impact wrench (also known as an air wrench, air gun, rattle gun, torque gun) is a socket wrench power tool designed to deliver high torque output with minimal exertion by the user, by storing energy in a rotating mass, then delivering it… …
86Insect wing — Original veins and wing posture of a dragonfly. Hoverflies hovering to mate …
87Digital channel election — A digital channel election was the process by which television stations in the United States chose which physical radio frequency TV channel they would permanently use after the analog shutdown in 2009. The process was managed and mandated by the …
88Mechanical watch — The movement of a Russian watch A mechanical watch is a watch that uses a mechanical mechanism to measure the passage of time, as opposed to modern quartz watches which function electronically. It is driven by a spring (called a mainspring) which …
89Chidori class torpedo boat — Chidori after refit 1934 Class overview Name: Chidori class torpedo boat Builders …
90ARCA (NGO) — ARCA Type Private Industry Aerospace and space tourism Founded 1999 …
