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Takeoff safety speed. The speed at which the aircraft may safely climb with one engine inoperative. [7] [8] [9] V 2 min: Minimum takeoff safety speed. [7] [8] [9] V 3: Flap retraction speed. [8] [9] V 4: Steady initial climb speed. The all engines operating take-off climb speed used to the point where acceleration to flap retraction speed is ...
In aeronautics, the rate of climb (RoC) is an aircraft's vertical speed, that is the positive or negative rate of altitude change with respect to time. [1] In most ICAO member countries, even in otherwise metric countries, this is usually expressed in feet per minute (ft/min); elsewhere, it is commonly expressed in metres per second (m/s).
In aviation, a climb or ascent is the operation of increasing the altitude of an aircraft. It is also the logical phase of a typical flight (the climb phase or climbout) following takeoff and preceding the cruise. During the climb phase there is an increase in altitude to a predetermined level. [1] The opposite of a climb is a descent.
The minimum such speed is the stall speed, or V SO. The indicated airspeed at which a fixed-wing aircraft stalls varies with the weight of the aircraft but does not vary significantly with altitude. At speeds close to the stall speed the aircraft's wings are at a high angle of attack. At higher altitudes, the air density is lower than at sea level.
The one-engine inoperative (OEI) service ceiling of a twin-engine, fixed-wing aircraft is the density altitude at which flying in a clean configuration, at the best rate of climb airspeed for that altitude with one engine producing maximum continuous power and the other engine shut down (and if it has a propeller, the propeller is feathered ...
The subject of aircraft performance includes aircraft speed, ceiling, range and fuel efficiency, take-off distance required, and climb rate. It also includes aircraft controllability speeds. [4] Aircraft manufacturers will publish performance data in an aircraft flight manual, concerning the behaviour of the aircraft under various circumstances ...
This F-104 became the first aircraft to simultaneously hold the world speed, rate of climb and altitude records when on May 16, 1958, U.S. Air Force Capt. Walter W. Irwin set a world speed record of 1,404.19 mph 1959: September 4 94,658 ft 28,852 m Vladimir Ilyushin: Sukhoi Su-9: turbojet: 1959: December 6 98,557 ft 30,040 m
Lockheed NF-104A, 56-0756, zoom climbing with rocket power. A zoom climb or an unrestricted climb is a maneuver in which the rate of climb is greater than the maximum climb rate using only the thrust of the aircraft's engines. The additional climb rate is attained by reduction of horizontal speed.