==Development==Using the experience gained in building Cierva autogyros under licence the Kellett Autogiro Company developed the KD-1 which was similar to the contemporary Cierva C.30.
Компания Kellett Autogiro Company (основанная в 1929) приобрела опыт постройки автожиров, производя по лицензии автожиры Сиервы (модель Cierva C.30.).