The LE-7A is a liquid rocket engine developed by Mitsubishi Heavy Industries for use in the H-IIA and H-IIB launch vehicles. It uses a combination of liquid oxygen and kerosene as propellants, providing a high thrust-to-weight ratio and efficient performance for launching payloads into space. This engine features a staged combustion cycle, which enhances its efficiency and power. The LE-7A is known for its reliability and has been a key component in Japan's efforts to develop a robust space launch capability, contributing to various satellite missions and international collaborations in space exploration.