Study and Analysis of the Relationship between Longitudinal Moment Coefficient and Angle of Attack or Lift Coefficient based on the Stability and Controllability of the ekranoplan

Abstract

The ekranoplan, as a special type of vessel, combines the performance of an aircraft and a ship. It boasts high speed, low radar visibility, good maneuverability, excellent amphibious capabilities, and a unique feature that sets it apart from other vessels: it is immune to torpedo and mine attacks. This article aims to introduce the main component design of the ekranoplan, the composition of its power system, and analyze its stability and controllability. Through graphical analysis, the relationship between the longitudinal moment coefficient, attack angle, and lift coefficient of an aircraft was studied. The results indicate that ensuring stability for the ekranoplan is more challenging compared to an aircraft. The paper provides a good basis for subsequent seakeeping experiments on ground-effect winged vehicles, which is of great significance.