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VMCA is the Middle Cerebral Artery Flow Velocity (cardiology/pulmonary medicine)
And,VMCG is the minimum control speed on the ground (aviation)
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∙ 14y ago
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What is the minimum speed of an airplane and the average speed of an airplane?
Simply put, the minimum speed for all aircraft is Vs, the speed below which the wings cannot produce sufficient lift for level flight. You can further refine the answer by discussing Vmcg and Vmca which relate to multi-engine aircraft. These are the minimum controllable speeds on the ground and in the air (respectively) with an engine out and the other engines at maximum power. As for average speed, I'm not sure what you're after here, but one might say that the "average" speed of an aircraft would be the best speed at which it cruises. Cruise speeds are a function not only of aerodynamics, but of cost efficiencies as well and are determined by each operator according to its needs.
What are the v speeds for a Cessna 421?
V-Speeds (KIAS) for a C421C: Vne - 240 Vno - 201 Va - 151 Vfe - 15 degrees 176, 30/45 degrees - 146 Vle/Vlo - 176 Vy & Vyse - 111 Vx - 88 Vxse - 105 Vmca - 73 Maximum Demonstrated X-Wind - 17kts Vso - 70.5 Vs1 - 79
How are speed and acceleration described before takeoff and when an airplane takes off?
There are different speeds. They are called v-speeds: V1 takeoff decision speed V2 takeoff safety speed Va design maneuvering speed Vb design speed for maximum gust intensity Vc design cruise speed Vd design dive speed Vdf demonstration dive speed Vf design flap speed Vfe maximum flap-extended speed (top of white arc) Vh maximum speed in level flight with maximum continuous power Vle maximum landing-gear extended speed Vlo maximum landing-gear operating speed Vlof lift-off speed Vmca minimum control speed with critical engine out, out of ground effect (red radial line) Vmcg minimum control speed with critical engine out during takeoff run Vmo maximum operating speed Mmo maximum operating Mach number Vmu minimum unstick speed Vne never-exceed speed Vno maximum cruise speed (top of green arc) Vr rotation speed Vref reference speed for final approach, normally (1.3 x Vso) Vs stall speed Vso stall speed in landing configuration (bottom of white arc) Vsse minimum safe single-engine speed Vx best angle-of-climb speed Vxse best single-engine angle-of-climb speed Vy best rate-of-climb speed Vyse best single-engine rate-of-climb speed
