Ram Air Pressure Calculator

This calculator determines the ram air pressure generated by air velocity pressing against a vehicle's bodywork, which can affect aerodynamic performance and downforce.

Input Parameters

Calculation Results

Ram Air Pressure (PSI)

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Calculation Formula

P = 0.5 × ρ × v² × Cd × A

Where:
P = Ram Air Pressure (PSI)
ρ = Air density (slugs/ft³)
v = Air velocity (mph)
Cd = Drag coefficient
A = Frontal area (sq ft)

Ram Air Pressure Calculator Usage Guide

Learn how to use the Ram Air Pressure Calculator and understand its aerodynamic principles

How to Use This Calculator

  1. Enter the air velocity in mph (mph) - the speed at which air is hitting your vehicle's front surface.
  2. Input the frontal area of your vehicle in square feet. This is the cross-sectional area facing forward.
  3. Specify the drag coefficient of your vehicle (typically between 0.3 and 0.5 for cars).
  4. Click the "Calculate" button to determine the ram air pressure generated.

Understanding Ram Air Pressure

Ram air pressure is the increase in air pressure caused by the velocity of air hitting a vehicle's front surface. This pressure can help increase downforce on the tires, improving traction, especially in performance applications.

The formula used in this calculator is based on basic fluid dynamics:

P = 0.5 × ρ × v² × Cd × A

Where P is the ram air pressure, ρ is the air density, v is the velocity, Cd is the drag coefficient, and A is the frontal area.

Practical Applications

This calculator can help you estimate the aerodynamic benefits of different front-end designs or body modifications. Higher ram air pressure generally indicates greater potential for downforce, which can improve handling and cornering performance.

Important Notes

  • The calculated value is an approximation and assumes standard atmospheric conditions.
  • For more accurate results, consider air temperature and humidity, which affect air density.
  • This calculator is primarily for educational purposes and should not replace professional aerodynamic analysis.