Aviation Theory
What is the ground effect?
Increased lift and reduced induced drag when flying close to the ground.
Why should LiPo batteries never be over-discharged?
It can cause permanent damage or unsafe chemical instability.
Where does MARCS usually meet for club winter flying events?
Sun Prairie High School Gym
What telemetry sensor tells you how much ‘juice’ is left in the battery?
Voltage sensor
Which basic roll involves a 360° rotation along the aircraft’s longitudinal axis?
An Aileron roll
What is the primary reason for using leading-edge slats on an aircraft?
To delay the stall by maintaining smooth airflow over the wing at high angles of attack.
Which control surface makes your airplane bank?
Ailerons
What does MARCS stand for?
Madison Area Radio Control Society
Which flight stabilization system adjusts for small wind disruptions?
AS3X or Gyro
What is a half-roll to inverted followed by a half-loop down, used to reverse direction and lose altitude.
Split-S maneuver
What happens when the angle of attack gets a little too high?
A stall occurs
What’s the RC device that tells your plane who’s boss?
The transmitter
What is the direction for takeoff and landing based on?
The wind direction.
What protocol allows real-time flight data to be displayed on transmitters?
Telemetry protocol
What is an aerobatic maneuver where an aircraft flies a vertical line upward, pivots 180 degrees using the rudder at near-zero airspeed, and then descends vertically.
A stall turn or hammerhead.
What are the four basic forces acting on an airplane in flight?
Lift, weight, thrust, and drag.
What’s RC part that converts radio signals into servo movement?
The receiver
What is required before flying a new or rebuilt aircraft for the first time?
A thorough preflight inspection and control surface verification.
Why do some advanced transmitters use Hall effect gimbals?
They provide smoother, wear-free control stick sensing compared to potentiometers.
What is a high-angle, slow-speed flight using high throttle and up elevator to hover-like motion.
A harrier maneuver