Sport Pilot for Helicopter - Simplified Flight Controls › VIII. Emergency Operations › Task J. Low Gravity (G) Recognition and Recovery

SH.VIII.J.K1a

Knowledge

Exhibits knowledge of the elements related to low G conditions by describing::

Aerodynamic factors related to low G conditions

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Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Helicopter Flying Handbook p. 11-14
Chapter 11: Helicopter Emergencies and Hazards › Low-G Conditions and Mast Bumping
However, helicopters with two-bladed teetering rotors rely entirely on the tilt of the thrust vector for control. Therefore, low-G conditions can be catastrophic for two-bladed helicopters. At lower speeds, such as initiation of a takeoff from hover ... traditional recovery from vortex ring state, forward cyclic maneuvers do not cause low G and are safe to perform. However, an abrupt forward cyclic input or pushover in a two-bladed helicopter can be dangerous and must be avoided, particularly…
Helicopter Flying Handbook p. 11-16
Chapter 11: Helicopter Emergencies and Hazards › Low Rotor RPM and Rotor Stall
Other causes of a power-on low rotor rpm condition include the pilot rolling the throttle the wrong way in helicopters not equipped with a governor or a governor failure in helicopters so equipped. As the rpm decreases, the amount ... feed upon itself rapidly leading to rotor stall. There are a number of ways the pilot can recognize the low rotor rpm situation. Visually, the pilot can not only see the rotor rpm indicator decrease but also the change…
Airplane Flying Handbook p. G-1
Glossary › Numbers and Symbols
Aerodynamic ceiling. The point (altitude) at which, as the indicated airspeed decreases with altitude, it progressively merges with the low speed buffet boundary where pre-stall buffet occurs for the airplane at a load factor of 1.0 G. Aerodynamics ... object, and with the motion of air on other gases. Aerodynamics deals with the production of lift by the aircraft, the relative wind, and the atmosphere. Ailerons. Primary flight control surfaces mounted on the trailing edge of an airplane wing…
FAA Aeronautical Chart Users' Guide p. 82
IFR ENROUTE LOW / HIGH ALTITUDE SYMBOLS (U.S., PACIFIC AND ALASKA CHARTS) › AIRSPACE INFORMATION
NAVAID or Fix Note: Not shown on joint Victor/RNAV or Jet/RNAV Routes. VHF/UHF LF/MF MINIMUM ENROUTE ALTITUDE (MEA) RNAV LOW CHARTS LOW CHARTS All Altitudes Are MSL Unless Otherwise Noted. LOW CHARTS Directional MEAs HIGH CHARTS HIGH CHARTS HIGH CHARTS ... shown on IFR High Altitude Charts when MEA is other than 18,000’. aircraft MEA for DME/DME/IRU RNAV aircraft LOW CHARTS MINIMUM ENROUTE ALTITUDE (MEA) GAP N/A MEA is established when there is a gap in navigation signal coverage. HIGH…