The **horizontal velocity** (Vx) remains constant and is equal to Vxo. The two vectors Vx and Vy are added together to get the velocity at each point on the path. If an object is pointed at an angle, the motion is essentially the same except that there is now an initial vertical velocity (Vyo).

Contents

- 1 What does VX and VY stand for?
- 2 What is VX speed?
- 3 What is VYF physics?
- 4 What is VX in flying?
- 5 What happens when VX and VY meet?
- 6 Why does VY increase with altitude?
- 7 Why does VX stay the same?
- 8 What is the best angle of climb?
- 9 Does VX change with weight?
- 10 What is true altitude?
- 11 What is V speed of aircraft?
- 12 How is VX calculated?
- 13 What is H in projectile motion?

## What does VX and VY stand for?

Vx is the speed where you have the most excess force (thrust), and Vy is the speed where you have the most excess power (horsepower).

## What is VX speed?

VX is known as the ‘Best Angle of Climb’. This is the speed that gives you the most altitude in the shortest distance. VY is known as ‘Best Rate of Climb’. Gives you the most altitude in the shortest time.

## What is VYF physics?

Vyf = Vi(sinθ) – gΔt — vertical final velocity. Vyf^2 = Vi^2(sinθ)^2 – 2gΔy — vertical final velocity. Instead of having vertical motion that starts from rest, a projectile launched at an angle has an initial vertical value. similar to an object thrown straight up with an initial velocity.

## What is VX in flying?

VX is the speed at which the airplane achieves the greatest gain in altitude for a given distance over the ground. It is usually slightly less than VY, which is the greatest gain in altitude per unit of time. The specific speeds to be used for a given airplane are stated in the FAA-approved AFM/POH.

## What happens when VX and VY meet?

The Absolute Ceiling: Where Vx and Vy Meet Your “absolute ceiling” is the highest altitude you could possibly fly. At this altitude, the power available curve crosses through the lowest point of the power required curve. Now you can’t climb anymore because you’re out of excess power.

## Why does VY increase with altitude?

Let’s move on to why Vy changes with altitude. Vy is the best rate of climb speed. It’s the speed that results in the greatest upward deflection on the VSI. Since an airplane’s rate of climb is a function of excess power, it stands to reason that the more excess power you have the higher the rate of climb will be.

## Why does VX stay the same?

In case of projectile motion the vertical component of particle’s velocity changes continuously because of the force acting in vertical direction which is its own weight ( mg ). object; its horizontal velocity remains constant.

## What is the best angle of climb?

Best angle of climb, also known as Vx, is the true airspeed that allows an aircraft to gain the most amount of altitude in the shortest distance across the ground. The best angle of climb speed occurs when the difference between thrust available and thrust required is greatest.

## Does VX change with weight?

Several Factors Affect Climb Performance Excess power is affected by weight, altitude, and aircraft configuration. Therefore, maximum Angle-of-Climb (Vx) and maximum Rate-of-Climb (Vy) performance decrease under any of these conditions” (FAA PHAK 11-8).

## What is true altitude?

True Altitude is height above mean sea level (MSL). Pressure Altitude is the indicated altitude when an altimeter is set to 29.92 in Hg (1013 hPa in other parts of the world). It is primarily used in aircraft performance calculations and in high-altitude flight.

## What is V speed of aircraft?

The US Federal Aviation Administration defines it as: ” the maximum speed in the takeoff at which the pilot must take the first action (e.g., apply brakes, reduce thrust, deploy speed brakes) to stop the airplane within the accelerate-stop distance.

## How is VX calculated?

Projectile motion equations

- Horizontal velocity component: Vx = V * cos(α)
- Vertical velocity component: Vy = V * sin(α)
- Time of flight: t = 2 * Vy / g.
- Range of the projectile: R = 2 * Vx * Vy / g.
- Maximum height: hmax = Vy² / (2 * g)

## What is H in projectile motion?

Throughout the motion, the acceleration of projectile is constant and acts vertically downwards being equal to g. The angular momentum of projectile = mu cos Θ × h where the value of h denotes the height. The angle between the velocity and acceleration in the case of angular projection varies from 0 < Θ < 180 degrees.