Hewitt-Sperry Automatic Airplane for eight years, and yet Sperry became intrigued with the concept of applying radio control to them. He realized that for radio control to be effective, automatic stabilization would be essential, so he decided to adapt his naval gyro-stabilizers (which he had developed for destroyers). In 1913, the Navy provided a flying boat to test and evaluate the gyro-based autopilot. Sperry's son Lawrence served as an engineer during the test phase. In 1914, Lawrence Sperry was in Europe and observed the developing techniques of aerial warfare, including the use of aircraft. In 1916, the two Sperrys joined Peter Hewitt, an
Sperry Chalet chalet is the Sperry Trail, which starts at the Lake McDonald Lodge parking lot and stretches 6.7 miles to the chalet, climbing 3200 feet in the process. The trail passes along the base of Mount Brown and over the west ridge of Mount Edwards, with views of U-shaped valleys along the way. A side trip to Sperry Glacier is also possible, being a 4-mile hike (8 miles round trip). The other means of accessing the chalet is via the Gunsight Trail, which is a 12.1-mile hike from the Jackson Glacier Overlook on Going-to-the-Sun Road. This hike averages 9 hours. The