1. What is Defined Minimum Maneuvering Speed?

Defined Minimum Maneuvering Speed (DMMS) is a calculated airspeed that ensures an aircraft can safely perform maneuvers without exceeding its structural limits. It is derived from the stall speed and the aircraft's positive load limit.

2. How Does the Calculator Work?

The calculator uses the DMMS equation:

Where:

• \( V_s \) — Stall speed (knots)
• \( Positive\ Limit\ Load \) — Maximum positive g-load the aircraft can sustain

Explanation: This equation ensures that when maneuvering at or above DMMS, the aircraft will stall before exceeding its structural limits.

3. Importance of DMMS Calculation

Details: Calculating DMMS is crucial for flight safety, ensuring pilots have a reference speed that prevents overstressing the aircraft during maneuvers while maintaining adequate control authority.

4. Using the Calculator

Tips: Enter the aircraft's stall speed in knots and the positive limit load factor in g. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between DMMS and VA?
A: DMMS and maneuvering speed (VA) are conceptually similar, with DMMS being a more specific term used in certain aviation contexts and regulations.

Q2: How does aircraft weight affect DMMS?
A: Since stall speed increases with weight, DMMS will also increase with higher aircraft weights.

Q3: Is DMMS the same for all aircraft?
A: No, DMMS varies by aircraft type based on its specific stall characteristics and structural limitations.

Q4: When should DMMS be used during flight?
A: DMMS should be used as a reference when performing maneuvers to ensure the aircraft remains within its structural limits.

Q5: How does configuration affect DMMS?
A: Flaps and other high-lift devices change the stall speed, which directly affects the calculated DMMS.