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Welcome to the Dauntless Aviation Glossary!
At Dauntless, our editorial staff maintains the web's largest unified glossary of aviation terms. This glossary is built from a combination of official, quasi-official,
and proprietary sources (including original material that we develop oursselves). Uniquely, we often provide multiple definitions of a given term so that you can find that which best applies
to you. In order to maximize your learning efficiency, this glossary (and similar ones for our international users) is incresingly fully integrated into our aviation learning apps, including
our FAA written test prep and FAA practical test prep software and apps. If you like this glossary,
you'll love them with their polished learning environments and world's best and clearest content (please do give them a try.).
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Power Torque Over
| Power Torque Over | | | A situation whereby the torque on the airframe by the engine causes an uncontrollable Roll-Over upon loss or rotor thrust and control at low g or zero g load on the rotor. This is the roll equivalent of a Bunt-Over in pitch. In many accidents, it would be difficult to determine that PTO, rather than PPO or Bunt Over, was not the final mechanism of the accident. In all cases, the results might be exactly the same – severe extreme blade flap, precession stall, impact of a rotor blade on the airframe, and/or separation of the blades in flight. Avoidance of low-G maneuvers reduces, but does not eliminate, the risk of torque-over in a susceptible craft. The propensity for a possible PTO in any gyro would be dependent on the torque produced by the engine, any torque compensation or aggravation from the airframe aerodynamic configuration, and the inertial reaction of the airframe. | | source: Glossary of Gyroplane Terms |
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Disclaimer: While this glossary in most cases is likely to be highly accurate and useful, sometimes, for any number of editorial, transcription, technical, and other reasons, it might not be.
Additionally, as somtimes you may have found yourself brought to this page through an automated term matching system, you may find definitions here that do not match the cotext or application in which
you saw the original term. Please use your good judgement when using this resource.
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