Which of the following is listed as a heliport design principle?

• A. Maximum Weight/Minimum Contact Area
• B. Rotor Diameter
• C. Both A and B
• D. None of the above

Answer: (C)

Designs must ensure the surface can safely bear the helicopter’s weight and distribute that load over enough contact area to prevent damage or excessive settlement, while also providing enough rotor clearance based on the rotor diameter to keep blades and the aircraft away from obstacles during landing, takeoff, and hover. Both aspects are essential for safe, functional heliport design, so listing both principles makes sense. Relying on just weight capacity without rotor clearance could create collision risks, and focusing only on rotor diameter without confirming the surface can handle the load would risk structural failure.