1. What is a Lift by Span Calculator?

Definition: This calculator computes the lift per unit span based on the total lift force and wing span.

Purpose: It helps aerospace engineers and aviation professionals analyze wing loading and lift distribution.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( L_{span} \) — Lift per unit span (Newtons per meter, N/m)
• \( L \) — Total lift (Newtons, N)
• \( S \) — Wing span (meters, m)

Explanation: The total lift force is divided by the wing span to determine the lift distribution per unit length.

3. Importance of Lift per Unit Span Calculation

Details: Calculating lift per unit span is crucial for wing structural analysis, performance evaluation, and aerodynamic design optimization.

4. Using the Calculator

Tips: Enter the total lift force in Newtons and wing span in meters. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is typical lift per unit span for commercial aircraft?
A: Values typically range from 5,000 to 15,000 N/m depending on aircraft size and flight conditions.

Q2: How does lift per unit span relate to wing loading?
A: Wing loading is total lift divided by wing area, while lift per unit span considers the distribution along the wingspan.

Q3: Why is lift distribution important?
A: It affects structural loads, aileron effectiveness, and stall characteristics of the wing.

Q4: Can this be used for other lifting surfaces?
A: Yes, the same principle applies to horizontal stabilizers, canards, or any other lifting surface.

Q5: How does aspect ratio affect lift per unit span?
A: Higher aspect ratio wings typically have more elliptical lift distributions with lower peak values.