designed to help correct or ameliorate the discomfort of disorders of the spine and joints: orthopaedic mattresses Collins English Dictionary - Complete & Unabridged 2012 Digital Edition Â© William Collins Sons & Co. Ltd. 1979, 1986 Â© HarperCollins
Definition of Immelmann. : a maneuver in which an airplane reverses direction by executing half of a loop upwards followed by half of a roll âcalled also Immelmann turn.
The rolling scissors maneuver is somewhat different. Like the flat scissors, the rolling scissors maneuver is typically an engagement of two fighters of similar capabilities with respect to their thrust-to-weight ratios (and thus similar climbing capabilities), turning characteristics and wing loading.