Foil kites are soft kites based on the design of the parafoil. The propeller was shrouded in order to avoid entanglement with the parafoil lines. Gold Parachuting Medal for inventing the parafoil. The recovery system included a controllable parafoil and airbags. The parafoil (area of 687 square meters) was then released. This makes it difficult to achieve an optimum gliding angle without the parafoil deflating. Staging prevents high-speed winds from tearing the parafoil. Lynn coupled a three-wheeled buggy with a forerunner of the modern parafoil kite. Theodore personally made the first full-size parafoil, which worked perfectly in its first drop. Domina Jalbert (1904-1991) invented the ram-air inflated flexible wing often called the "Jalbert parafoil". Also, the parafoil stunt kites feed the same sporting activity. The X-38 utilized a unique parafoil landing system designed by Pioneer Aerospace. The later prototypes had their descent continue under a parafoil wing, the largest ever made. The CQ10A uses a parafoil for lift; the CQ10B uses an autogyro rotor for lift. Pioneer parafoil developer Domina Jalbert considered water kites hardly different from air kites.