KLE Dr M S Sheshgiri College of Engineering and Technology held a seminar presentation by Naveen Ullegaddi titled "Landing Gear Arrangement Analysis". The presentation covered various topics related to aircraft landing gear including different configurations, the role of height, steering systems, and shock absorbers. It concluded that landing gear design must meet requirements for minimum weight and volume while ensuring high performance, safety, and reduced life cycle costs. Advanced technologies and materials as well as simulation tools can help optimize design while adhering to regulations.

1. KLE Dr M S Sheshgiri
College of Engineering and Technology,
Udyambag, Belagavi – 590008
Department of Mechanical Engineering
Seminar Presentation
by
Naveen Ullegaddi
2KL19ME044
“Landing Gear Arrangement Analysis”
Under the Guidance of
Prof. B. G. Koujalagi
Assistant Professor
Department of Mechanical Engineering

2. CONTENTS
1. INTRODUCTION
2. LANDING GEAR CONFIGURATION
3. LANDING GEAR HEIGHT
4. STEERING SYSTEM OF WHEEL
5. SHOCK ABSORBERS
6. CONCLUSION
7. REFERENCES

3. INTRODUCTION
Landing gear’s most important feature for an aircraft is to provide shock absorption during the taxing,
landing process, and taking off. It is constructed as such to dissipate and absorb the kinetic energy
caused due to landing impact, therefore it is necessary to reduce load impact on the airframe. The
landing gear helps in the braking of airplanes with the help of wheel steering technology and is
conventionally made retractable in order to considerably drop the Drag caused due to obstruction
created by the airplane body while flying. Many forms of landing gear configurations are available.
Amphibious aircraft are equipped for landings on water or dry landing with clothing The use of skis
and wheels on sliding surfaces and clear runways in aircraft is performed in a similar way. The skis
are usually retractable so that the wheels can be used when necessary.

4. INTRODUCTION
Fig 1. Landing Gear Arrangement

5. LANDING GEAR CONFIGURATION
Fig 2. Landing Gear Configuration

6. LANDING GEAR HEIGHT
There are mainly five design requirements in which landing gear height plays an important role. They
are:
1. Landing gear height provides aircraft clearance during taxi.
2. Landing gear height provides rear fuselage clearance during take-off rotation.
3. Landing gear height contributes to tip-back prevention.
4. Landing gear height contributes to overturning prevention.
5. Landing gear height satisfies loading and unloading requirements.

7. LANDING GEAR HEIGHT
Fig 3. Landing Gear Height

8. STEERING SYSTEM OF WHEEL
Fig 4. Steering system of wheel

9. The nose wheel on most aircraft is steerable from the flight deck via a nose wheel steering system.
This allows the aircraft to be directed during ground operation. A few simple aircraft have nose wheel
assemblies that caster. Such aircraft are steered during taxi by differential braking. Most small aircraft
have steering capabilities through the use of a simple system of mechanical linkages connected to the
rudder pedals. Push-pull tubes are connected to pedal horns on the lower strut cylinder. As the pedals
are depressed, the movement is transferred to the strut piston axle and wheel assembly which rotates
to the left or right. Due to their mass and the need for positive control, large aircraft utilize a power
source for nose wheel steering.

10. SHOCK ABSORBERS
Types of shock absorbers
1. Rigid Struts 2. Steel Struts
Fig 5. Rigid Struts Fig 6. Steel Struts

11. SHOCK ABSORBERS
3. Oleo Pneumatic Shock Absorber
Fig 7. Oleo Pneumatic Shock Absorber

12. Working Of Oleo Pneumatic Shock Absorber
Fig 8. Working Of Oleo Pneumatic Shock Absorber

13. CONCLUSION
The need to design landing gear with minimum weight, minimum volume, high performance, improved life, and
reduced life cycle cost has posed many challenges to landing gear designers and practitioners. Further, it is
essential to reduce the landing gear design and development cycle time while meeting all the safety and
regulatory requirements. Many technologies have been developed over the years to meet the challenges of
landing gear design and development. These technologies have matured over the years and are widely used in
the current landing gear system and new technologies will continue to evolve in the future. These challenges can
be met, while adhering to all regulatory requirements of safety, by employing advanced technologies, materials,
analysis methods, processes, and production methods. By applying functional simulation and developing design
tools, the development time and cost are reduced considerably.

14. REFERENCES
1. A Study on Landing Gear Arrangement of an Aircraft -Mohammad Afwan1, Danish S. Memon2, Yuvraj G.
Pawar3, Shubham P. Kainge4 UG Students (B.E), Dept. of Mechanical Engineering, PRMIT&R, Amravati,
India
2. LANDING GEAR SHOCK ABSORBERS-Benjamin Chartier, Brandon Tuohy, Jefferson Retallack,
Stephen Tennant
3. AIRCRAFT LANDING GEAR ARRANGEMENT-HIGGINS, Nigel British Aerospace Airbus Limited,
Filton House, Filton, Bristol
4. Landing Gear Design-Mohammad Sadraey, Daniel Webster College
5. Aircraft Landing Gear Layouts and Functions - Functions-1Sunil Bhat, 2Vinod Moger 1,2Department of
Mechanical Engineering, Faculty of Engineering and Technology Jain (Deemed-to-be University),
Bengaluru, India

15. THANK YOU