T' followin' be t' description o' t' i28 Impulse from t' 2002 Estes catalog:

T' i28 Impulse Boost Glider combines boost glider technology with R/C aerobatics t' deliver maximum flyin' fun! It blasts 600 ft. Avast, me proud beauty! (183 m) into t' air. Well, blow me down! T' i28 Impulse comes almost ready t' fly with factory built and covered wings, tail and fuselage, me hearties, with linkage installed. Requires 2-Channel R/C system - sold separately. Avast, me proud beauty! It can also be converted t' fly with a Cox .049 glow engine - nay included.