# Question: What Is V1 And V2 In Aviation?

## What is V2 in aviation?

V2: Takeoff Safety Speed. V2 is the minimum speed that needs to be maintained up to acceleration altitude, in the event of an engine failure after V1. Flight at V2 ensures that the minimum required climb gradient is achieved, and that the aircraft is controllable.

## Why do pilots say V1 rotate?

V1 is the speed at which an airliner is committed to take off. It can no longer safely stop before the end of the runway. Rotate is the speed at which the pilot flying lifts the nose and with the increased angle of attack, the plane lifts off. So rotate comes rather quickly after V1 commitment speed.

## What are V speeds in aviation?

Regulatory V-speeds

V – speed designator Description
V FE Maximum flap extended speed.
V FTO Final takeoff speed.
V H Maximum speed in level flight at maximum continuous power.
V LE Maximum landing gear extended speed. This is the maximum speed at which a retractable gear aircraft should be flown with the landing gear extended.
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## What effects V1 speed?

Airport elevation, the existence of any slope on the runway, and the presence of precipitation or ice also play a role. Temperature and wind speed are also factors, as are configuration of the airplane. The bigger the airplane, the higher V1 will be, since the airspeed depends on weight.

## Why do pilots say blue?

The callout from the pilots like “LOC blue ” serves to remind themselves of the current flight guidance modes, and to maintain awareness of mode changes. This is also to ensure that their mental idea of “what the aircraft will do next” is up to date and fits to the current flight situation.

## What’s the difference between V1 and V2?

Q: What are ” V1″ and “V2 “? A: V1 is the speed by which time the decision to continue flight if an engine fails has been made. It can be said that V1 is the “commit to fly” speed. V2 is the speed at which the airplane will climb in the event of an engine failure.

## Why do pilots say heavy?

When a pilot uses the phrase “ heavy,” he is reminding ATC that his aircraft is large and requires more separation between it and the aircraft following.

## Why do pilots say Roger?

The International Civil Aviation Organization (ICAO) officially defines the word ” roger ” to mean “I have received all of your transmission.” For example, a pilot would say ” roger ” in response to an advisory from Air Traffic Control.

## What do pilots say when taking off?

Deadhead. While they may indeed be Grateful Dead fans, ‘deadhead crew’ is the common phrase used by pilots when referring to off -duty pilots and/or crew who are on board the plane as passengers.

## What does V stand for in aviation?

To be precise, though, the word velocity means “speed in a particular direction.” Technically, V stands for “vitesse,” another aviation term bor- rowed from the French; “vitesse” being the French word for “speed” or “rate.”

## What is P factor in aviation?

P – factor, also known as asymmetric blade effect and asymmetric disc effect, is an aerodynamic phenomenon experienced by a moving propeller, where the propeller’s center of thrust moves off-center when the aircraft is at a high angle of attack.

## What is VFTO speed?

VFTO means final takeoff speed. VH means maximum speed in level flight with maximum continuous power. VLE means maximum landing gear extended speed. VLO means maximum landing gear operating speed.

## What happens to V1 on a wet runway?

For dry and wet runways, V1 is mostly calculated to match accelerate–stop and accelerate–go distances. This is called the balanced field principle ([2] Par. Dry runway calculations typically result in a V1 equal, or close, to VR. Wet runway calculations typically result in a lower V1 with a speed gap to VR.

## Which factor does not affect V1 speed?

Acceleration is affected by temperature, elevation, weight, humidity, runway slope and surface conditions. Therefore we cannot translate the distance before V1, only time can be determined.

## How does weight affect V1?

EFFECT OF WEIGHT ON V1 speed. With limiting runway length, the V1 speed will be lower for a higher weight to cater for the longer stopping distance required. But remember, the minimum value of V1 can never be less VMCG (Minimum Control speed on Ground).