Educational purposes

1. DESIGN OF HIGH ENDURANCE
WALKALONG GLIDER
Presented By
G.SAI KRISHNA : 16WJ5A2101
Under the Guidance of
Dr. S. NAGA KALYAN
(Professor and HOD)
DEPARTMENT OF AERONAUTICAL ENGINEERING
GURU NANAK INSTITUTIONS TECHNICAL CAMPUS
(Affiliated to JNTU, Hyderabad, Approved by AICTE,
New Delhi)

2. CONTENTS
• ABSTRACT
• INTRODUCTION
• LITERATURE REVIEW
• IMPLEMENTATION TOOLS
• PROCEDURE
• RESULT
• CONCLUSION
• REFERENCE

3. ABSTRACT
• A walk along glider is a lightweight, slow flying
model aircraft designed to be kept aloft
by controllable slope soaring in the rising
air generated by the pilot who walks along with the
glider as it flies, usually holding a paddle. Hands or
even the forehead can also be used to create an
updraft.
• This type of soaring differs from other types of slope
soaring in that the orographic lift the plane as it flies
in the air and thus no other wind is required

4. CONTD..
• Ground effect should not be confused with ridge lift
when explaining how walk along gliders stay up.
Ground effect involves a horizontal surface. Ridge lift
requires a sloping surface.
• In ground effect the air does not have to move relative
to the ground whereas ridge lift requires the wind to
be blowing horizontally against the ridge.
• Walkalong gliders are sustained and controlled in the
ridge lift produced by the moving paddle.
• Software used in this project, CATIA V5 for design
purpose.

5. INTRODUCTION
• Gliding is a recreational activity and competitive air
sports in which pilots fly unpowered aircraft known
as gliders or sailplanes using naturally occurring
currents of rising air in the atmosphere to remain
airborne. The word soaring is also used for the
sport.

6. CONTD..
• Lift (soaring)
• Thermals
• Ridge lift
• Wave lift
• Auto towing
• Winch Launching

7. THERMAL LIFT
Circling in thermal
lift during a
competition

8. RIDGE LIFT

9. WAVE LIFT
A lenticular cloud
produced by a
mountain wave

10. AERO
TOWING
Aero Towing to

11. LITERATURE REVIEW
The "gull wing" Goppingen Go 3Minimoa produced in
Germany from 1936
In the 1930s, gliding spread too many other countries. In
the 1936 Summer Olympics in Berlin gliding was
a demonstration sport, and it was scheduled to be a full
Olympic sport in the 1940 Games. A glider, the Olympia, was
developed in Germany for the event, but World War II
intervened. By 1939 the major gliding records were held by
Russians, including a distance record of 748 kilometers
(465 mi). During the war, the sport of gliding in Europe was
largely suspended, though several German fighter aces in the
conflict, including Erich Hartmann, began their flight training
in gliders.

12. PARTS OF A GLIDER
A glider has many of the same parts as an airplane:
• Fuselage
• Wings
• Control Surfaces
• Landing Gear
But there are significant differences

13. FUSELAGE
• As small and light as possible.
• Basically sized around the cargo they carry (1 or 2 people).
• Cockpit of a single-seat glider is small, but large enough for
most.
• Pilots recline with their legs stretched out in front of them.
• Frontal exposure of pilot is reduced and cross-sectional area
of cockpit can be substantially.

14. WINGS
• Longer and narrower than conventional a/c
• Slenderness of wing expressed as aspect ratio.
(calculated by dividing the square of the span of the
wing by the area of the wing)
• High aspect ratio. (long wing compared width)
• Drag created during the production of lift (induced
drag) can account for significant portion of drag on
glider.

15. CONTROL SURFACES:
• Gliders use same control surfaces that are found on
conventional aircraft.
• Ailerons and elevator controlled using single stick between
pilot legs.
• Rudder – controlled using foot pedals.

16. AILERONS:
Moveable sections cut on trailing edge of wing.
Used as primary directional control and they control roll of plane.
Operate in opposite directions of each side of the plane.
Roll to the right - move control stick to right.
– Left aileron deflect down (more lift)
– Right aileron deflect up (less lift)
– Difference in lift causes rotation along axis

17. ELEVATOR:
Horizontal Stabilizer.
Movable wing like structure on the tail.
Used to control pitch of plane.
Allowing to point nose up/down.

18. RUDDER:
Vertical Stabilizer.
Wing structure on tail.
Control the yaw.
Allowing pilot to point nose left/right.

19. LANDING GEARS:
Reduce size of aircraft by reducing landing
gear. Glider typically consists of a single wheel
mounted just below cock pit.

20. IMPLEMENTATION TOOLS
• CAD: Computer Aided Designing (Technology to
create, Modify, Analyse or Optimize the design using
computer.
• CAE: Computer Aided Engineering (Technology to
analyse, Simulate or Study behaviour of the cad model
generated using computer.
• CAM: Computer Aided Manufacturing (Technology to
Plan, manage or control the operation in manufacturing
using computer.

21. Need for CAD, CAE & CAM:
• The usage of CAD CAE & CAM have changed the
overlook of the industries and developed healthy &
standard competition, as could achieve target in lean
time and ultimately the product reaches market in
estimated time with better quality and consistency. In
general view, it has lead to fast approach and creative
thinking.

22. ADVANTAGES:
• Cut off of the designing time.
• Cut off of the editing time.
• Cut off of the manufacturing time.
• High & controlled quality.
• Reduction of process cost.
• Consistency.
• Maintenance of Universal accessing data.

23. DISADVANTAGES
• Requires skilled operators.
• Initial setting & assumption consumes time o
Setting cost is more.
• Over heads are high and
• Applicable if production is high.

24. RESULT AND CONCLUSION
• WALKA LONG GLIDER 2D FILE

25. WALKA LONG GLIDER 3D
MULTI SECTION FILE

26. WALKA LONG GLIDER 2D
MULTI SECTION FILE

27. WALKA LONG GLIDER 3D
FILE

28. WALKA LONG GLIDER 2D
VIEW

29. CONCLUSIONS
• It is much faster and more accurate.
• Once a design is completed. 2D and 3D views are readily
obtainable.
• The ability to changes in late design process is possible.
• It is user friendly both solid and surface modeling can be done.
• It provides a greater flexibility for change. For examples if we
like to change the dimensions of our model, all the related
dimensions in design assembly, manufacturing etc. will
automatically change.
• Provides clear 3D models, which are easy to visualize and
understand.
• CATIA provides easy assembly of the individual parts or
models created it also decreases the time required for the
assembly to a large extent.

30. REFERENCES
• Method of Flying Toy Airplane and Means Therefor
• Walkalong Glider Inventor's Interview Page and New Directions
• Philip Rossoni (2012). Build and Pilot Your Own Walkalong Gliders.
McGraw-Hill. pp. 22–23. ISBN 0071790551.
• Rossoni, P. YouTube video titled "Comparison of Tumble wings Made
from Different Weight Paper." ,2012
• Philip Rossoni (2012). Build and Pilot Your Own Walkalong Gliders.
McGraw-Hill. p. 77. ISBN 0071790551.
• Philip Rossoni (2012). Build and Pilot Your Own Walkalong Gliders.
McGraw-Hill. pp. 71–73. ISBN 0071790551.
• Aronstein, D. YouTube video titled "Model B-17 Flying Fortress
Walkalong Glider", 2008
• Rossoni, P. Web page titled "Stick And Tissue Model Aircraft" , 2011