: loss of polarization; especially : loss of the difference in charge between the inside and outside of the plasma membrane of a muscle or nerve cell due to a change in permeability and migration of sodium ions to the interior â¦ partial depolarization of the ventricular tissue resulting from rapid conduction of the electrical impulse from the atrium ...
Cruise Speed (Normal)473 knots. Cruise Speed (Normal). Compared to the average Turbofan-powered Narrow-body Commercial Passenger Plane, which cruises at 458 knots (527 mph) to maximize range and can cruise at a maximum speed of 472 knots (543 mph), the Bombardier CRJ700: 1  Maximizes its range at a 11 knot (13 mph) lower speed (a 2.4% margin).
Commercial jets are by far one of the fastest ways to travel. Each type of jet has its own takeoff, cruising and landing speed. A commercial jetliner usually takes off between 160 and 180 mph. The varying speed can be due to wind resistance, overall weight capacity and/or the use of high-lift devices. Airspeed is measured with respect to the velocity of the object through the air. The average cruising speed is between 550 and 580 mph. Wind resistance is a key factor when determining the speed of the aircraft. The average landing speed for a commercial jet is 150 to 166 mph. Changes in speed can be a result of weather conditions, runway length and landing weight.