This document provides information about an aeromodelling workshop. It discusses what aeromodelling is, including that it involves designing, building, and flying miniaturized aircraft. The workshop will teach participants about aircraft design and allow them to design and build their own remote-controlled aircraft. It covers basic aerodynamic concepts like lift, thrust, drag and weight. It also discusses components of remote-controlled aircraft like motors, batteries, and control surfaces. The document provides information on wing design principles, powering aircraft, and materials used in aircraft building.

1. AEROMODELLING
WORKSHOP

2.  Aeromodelling is the art of designing, building
and flying miniaturized aircrafts
(powered or non-powered).
What is Aeromodelling?
 It is both a hobby and sport; the hobby aspect
involves building and assembling model aircraft,
and the sport part involves the flying.

3.  Model airplanes are
sized down models of
an aircraft
 The calculations are
easy and importance
is given to building of
the plane

4. What is this Workshop about?
 Did you always want to get into the aviation
industry? Have you ever dreamt of becoming an
Aeronautical Engineer? Ever wondered how it
feels to design your own aircraft and see it soar
into the sky? Then Take a Break and come to Jet
wings RC Aircraft Workshop.

5. WHY ?
 This workshop by Jet wings gives you an
opportunity to understand the theory behind the
functioning of aircraft and aircraft design. It
makes you innovate by coming up with your own
design of an RC aircraft and fabricate it from
scratch. An interactive lecture session and design
session helps you design the best performing
aircraft.

6. Basic Aerodynamics

7. Forces acting on a plane

8. LIFT
 It’s the upward force acting on the planes due
to the air flow over the wings
 It is determined by the design of the wing and
the wind nature as
L=1/2ρV2ACL
CL is the lift coefficient
V is flight speed, A is wing area
ρ is density of air

9. THRUST
 It’s the force provided by the engine of the
plane
 Mainly two type of thrust generators are used
1. IC Engines
2. Electric Motors
We will be seeing about electric motors here

10. WEIGHT
This is the weight of the plane along with its
payload and motors.
This should be minimized as much as possible by
proper design.

11. DRAG
This is the weight of the plane along with its
payload and motors.
This should be minimized as much as possible by
proper design.

12. Difference between aircraft and
airplane?
 An aircraft is any machine that can fly.
 Airplanes, hot air balloons, helicopters, or
even flying platforms are considered aircraft.
 An airplane is a specific type of aircraft that
has fixed wings and engine, it is heavier than
air that is capable of sustained, powered, and
controlled flight.

13. What is an RC aircraft or RC
plane?
 A remote-controlled
aircraft is a small flying
machine that is
controlled remotely by
an operator on the
ground using a hand-held
radio transmitter

14. Materials used for RC aircrafts
 Balsa
 Styrofoam
 Depron
 Coroplast

15. Balsa
 This wood is very light and can
can easily work for almost
every purpose in aeromodelling.

16. Styrofoam
 This material is light as
well as strong.
 It is a kind of expanded
polystyrene used especially
especially for making RC
aircraft structure.

17. Depron
 It is a closed cell Styrofoam
foam in sheet form.
 It is a fantastic medium for
building model aircraft.
 It is extremely lightweight.

18. Coroplast
 Coroplast is simply the two
sheets of plastic separated
by another layer of zigzagged
zigzagged plastic.
 It is lightweight, inexpensive,
inexpensive, and fairly sturdy.

19. COMPONENTS

20. Electrical components
 Brushless motor
 Servos motor
 Transmitter
 Receiver
 Electronic speed controller
 LI Po Battery.

21. Brush-Less DC motor (BLDC)
 A Brush-Less DC motor (BLDC) is a synchronous
electric motor which is powered by direct-current
electricity (DC) .
 Which has an electronically controlled
commutation system, instead of a mechanical
commutation system based on brushes.
 In such motors, current and torque, voltage and
rpm are linearly related.

22. Internal BLDC Motor Contraction

23.  A Servo is a small device that has an output
shaft.
 This shaft can be positioned to specific angular
positions by sending the servo a coded signal.
 As long as the coded signal exists on the input
line, the servo will maintain the angular
position of the shaft.
 As the coded signal changes, the angular
position of the shaft changes.
servo motor

25.  A transmitter is an electronic device which,
usually with the aid of an antenna, propagates
an electromagnetic signal such as radio,
television, or other telecommunications.
 When talking about RC transmitter modes we are
referring to how the transmitter is set up to
control the airplane
 which sticks operate which controls on the
model.
Transmitter

27.  It consists of receiver module
and a antennae wire of about 2-
3 feet long.
 The receiver gets signal from the
transmitter and then acts upon
the servos
 Nowadays there are ECSs which
have separate power for the
receiver so there is no need for
separate power.
Receiver

28.  Li-poly batteries are also gaining favor in the
world of Radio-controlled aircraft as well as
Radio-controlled cars
where the advantages of both lower weight
and greatly increased run times can be
sufficient justification for the price.
 However ,lithium polymer-specific chargers
are required to avoid fire and explosion.
Lithium polymer batteries

30. WING ASPECTS

31.  The lift generation is decided by the shape
of the wings and the aerofoil
 The lifting force is provided by the
difference in the pressure of air flowing
below and above the wing and is governed
by Bernoulli’s principle
Wings and Aerofoil

32. How do you design a good wing?
 By proper calculation of
the wingspan , wing
loading and aspect ratios
 By making a good aerofoil
 By optimizing the angle
of attack to have good
lift to drag ratios

33. Angle of Attack (aoa)
This is the relative angle made by the wind with the wings

34.  Angle of attack is
directly proportional to
the lift coefficient till a
maximum limit which is
generally about 17o
 After which the plane
stalls
Relation between aoa & lift

35. CONTROL SURFACES

37.  These are the surfaces which divert the
direction of wind to provide change in
direction of flight
 There are basically three types of rotation
of plane which provide the change in
direction

38. Rotation of a plane

39. DESIGN PRINCIPLES

40.  It is the ratio of the weight of the plane to
the wing area
 Gives a measure of the load given per unit
area of the wing
 Wing loading is an important factor which
decides the balance between the forces
Wing Loading

41.  Aspect Ratio is the ratio of square of
wingspan to the area of the wing
AR = l2 / A
Where ‘l’ is the wingspan and A is the area of
wing
Typical aspect ratios for gliders are 6-8
Aspect Ratio(AR)

42. POWERING THE
PLANE

43. Thrust
Motor
Battery
Propellers
ECS

44.  After the thrust required is calculated the
configuration of the motor is decided
 The motor is selected by its KV rating which
is basically the RPM per volt it can deliver
 The KV rating is calculated by max current so
while selecting a battery and ECS see to it
that continuous current rating is greater than
motor rating.
Motor specifications

45.  One of the usually motors used is the 2204
motor which provides about 350 gms of thrust
 The thrust provided also depends upon the
propellers used which is again specified by its
pitch and diameter length.
Typical motors