The Miller Tern is an American single-seat, high wing glider that was designed by William Terrance Miller and offered as plans for amateur construction.
[1][2] Named for the bird, the Tern was the product of Miller's desire to design a sailplane specifically for homebuilding, providing ease of construction and good performance for its day.
It has a fixed monowheel landing gear, dive brakes and an optional tail-mounted drag chute.
The basic Tern has a 51 ft (15.5 m) wingspan that gives a glide ratio of 34:1 at 58 mph (93 km/h), while the longer span Tern II, with its 55 ft (16.8 m) wingspan, has a glide ratio several points higher.
[4] Data from Sailplane Directory and Soaring[1][2]General characteristics Performance