As you become more proficient in your aerobatic ability, you will naturally begin to combine elements of different maneuvers into a single aerobatic maneuver or sequence. One such maneuver, found in the 2015 Academy of Model Aeronautics Precision Aerobatic Advanced program, is the Cobra Roll with a Half-Roll Up and a Positive Snap Down. For new and experienced aerobatic pilots alike, this figure is demanding. It not only combines different orientations of the aircraft with upright and inverted flight but also requires you to focus on flying a triangular shape while performing a half-roll within the first half of the maneuver and a positive snap roll on the second.
It is beneficial to start with the control surface deflection amounts, exponential settings, and the center of gravity recommended by the aircraft manufacturer. To precisely perform the maneuver, two control surface deflection rates are recommended…
Text by John Glevellis.
MODEL AIRPLANE NEWS PREMIUM members can access this article and many others highlighting amazing techniques, RC airplane builds and projects. When you become a member, you’ll get instant online access to our back-issue archives, the latest Model Airplane News Digital Editions, all of our newsstand-only special issues, and much more.
Membership includes exclusive access to our enormous collection of RC information.
- 7+ years of digital editions of Model Airplane News
- Flight Journal and Model Airplane News special issue digital editions, previously only available on newsstands
- Free access to our magazine app through the iTunes Store – get Model Airplane News on your mobile or tablet device
- Aerobatic flight technique video lessons for plane & helicopter pilots
- Contests & giveaways only for members
- 30 years of Model Airplane News archives
- 10 years of Electric Flight archives
- 5% off ALL Air Age Store purchases every time you shop