Basic
What is the primary force that causes a helicopter to lift off the ground?
Lift, which is generated by the rotor blades pushing air downward.
What type of material is commonly used for the body frame of the helicopter?
Balsa,wood,known, for being lightweight and strong.
What is the effect of a longer rotor blade on a helicopter's flight?
A longer rotor blade increases lift and can improve flight duration, but also adds weight.
How can you improve a helicopter's stability during the flight?
By adjusting the tail of the rotor or modifying the weight distribution.
What principle explains how a helicopter generates lift?
Bernoulli's principle, where air moves faster over the the top of the rotor blades, creating lower pressure and generating lift.
What is a common lightweight material used for helicopter rotor blades.
Balsa wood or plastic for its lightweight and flexibility.
What is the relationship between rotor speed and flight time?
A slower rotor speed generally results in a longer flight time by reducing drag and preventing instability.
What adjustments can you make to reduce the weight of your helicopter without sacrificing strength?
Use lightweight materials like balsa wood or thin plastic and minimize the number of components with compromising structural.
How does changing the angle of attack affect lift?
Increasing the angle of attack increases lift (up to a certain point) but can also increase drag. Too much angle can cause stalling.
What key factor to consider when selecting the propeller for your helicopter?
The weight, pitch, and material of the propeller will affect the lift stability of the helicopter.
What happens if the helicopter's rotor blades are too short?
The helicopter may lack enough lift, leading to short flight times or insufficient altitude.
How can you adjust your helicopter's design to maximize flight duration?
Reduce the weight, optimize rotor blades design, and fine-tune the rubber motor for efficiency.
What is the term for the force that opposes the helicopter's upward motion?
Weight (gravity), which pulls the helicopter downward.
Why are materials like balsa wood preferred for building the flight characteristics of a helicopter?
Blade twist and pitch affect the angle of attack during flight, which can influence the lift, drag, and stability.
What is the importance of fine-tuning the rubber motor for maximum performance?
Fine-tuning the rubber (adjusting the tension or number of turns) ensure consistent power delivery, affect flight time and stability.
What is the importance of fine-tuning the rubber motor for maximum performance?
Fine-tuning the rubber motor,ensures consistent power delivery, affecting time delivery, affecting flight time and stability.
How does the concept of torque relate to helicopter flight?
Torque is the rotational force produced by the rotor, which can cause the helicopter to spin in the opposite direction unless countracted.
What is the role of the rubber band in powering the helicopte?
The rubber band stores energy when twisted and releases it to turn the rotor blades.
How do aerodynamics play a role in the efficiency of your helicopter's flight?
Streamlined designs reduce drag, while efficient blade angles and surfaces maximize lift and reduce unnecessary resistance, improving flight duration.
What strategies can be used to achieve a controlled,slow decent?
Adjust the pitch of rotor blades, use light materials for the structure, and ensure the helicopter is balanced to slow its fall.