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. (183 m) into t' air. Aye aye! Avast! T' i28 Impulse comes almost ready t' fly with factory built and covered wings, tail and fuselage, ya bilge rat, with linkage installed. Requires 2-Channel R/C system - sold separately. It can also be converted t' fly with a Cox .049 glow engine - nay included.