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Transcript

SATELLITE LAUNCH VEHICLES

Content

1. Introduction

2. Origins of Rockets

3. Types of Satellite Launch Vehicles

3.a Expendable Launch Vehicles

3.b Reusable Launch Vehicles

4. Isro at a glance

4.a Polar Satellite Launch Vehicle

4.b Geosynchronous Satellite Launch V'cle

5. References

Aviroopa Dey (2029012)

Tulika Ranjan (2029078)

Sannyal Raj (2029108)

Prabhav Mishra (2029137)

Swati K Singh (2029158)

Pratik Gaurav (2029176)

INTRODUCTION

Satellite launch vehicles are rockets designed to carry payloads into orbit around the Earth or other celestial bodies. They are crucial for space exploration, national security, scientific research, and telecommunications. Launch vehicles consist of rocket engines, fuel tanks, guidance systems, payload fairing, and other equipment. They are typically launched from spaceports or launch sites and follow a predetermined trajectory to deliver the payload into orbit.

There are different types of launch vehicles, including expendable, reusable, and air-launched vehicles.

Several countries and private companies have developed their own satellite launch vehicles, expanding the capabilities and reach of space exploration and satellite technology. These advances have paved the way for new applications and opportunities in space, such as space tourism, asteroid mining, and interplanetary exploration. The size and design of launch vehicles depend on the payload and the orbit they are intended to reach. Launch vehicles are critical components of modern space programs and have revolutionized our understanding of the universe.

Origins Of ROCKETS

The origins of rocket launches date back to the early 20th century, when rocket technology was in its infancy. The first successful rocket launch occurred in 1926 by American scientist Robert Goddard.

Rocket launches were initially conducted for scientific purposes, such as atmospheric research and studying cosmic rays. During World War II, rockets were developed for military purposes, including the German V-2 rocket.

After the war, rocket launches became essential for space exploration and national defense. The Soviet Union launched the first satellite, Sputnik 1, in 1957, followed by the United States in 1958.

Today, rocket launches are routine for space exploration, satellite communication, and national security. Private companies such as SpaceX, Blue Origin, and Virgin Galactic have entered the market, making space travel more accessible and affordable.

Types of Satellite Launch Vehicles

1. Expendable Launch Vehicles (ELVs)

2. Reusable Launch Vehicles (RLVs)

Expendable Launch Vehicles (ELVs) :

Expendable Launch Vehicles (ELVs) are used for one-time missions and are discarded after delivering their payload into orbit.

They consist of multiple stages, each with its own engine and fuel tanks.

Examples include the Delta IV, Atlas V, and Falcon 9 rockets.

ELVs are less expensive than reusable vehicles but require more time and resources to prepare for launch.

They launch payloads into LEO, GEO, and polar orbits for various purposes.

Reusable Launch Vehicles (RLVs):

Reusable Launch Vehicles (RLVs) return to Earth after delivering their payload, making them cost-

effective and sustainable.

RLVs can be reused, reducing the cost of space launches and making space travel more accessible. Examples include the Space Shuttle and SpaceX Falcon 9.

RLVs require less preparation time but are more complex and expensive to design and maintain than expendable launch vehicles.

ISRO At A Glance

Polar Satellite Launch Vehicle

The Polar Satellite Launch Vehicle (PSLV) is an Indian-made expendable launch vehicle used for launching satellites into polar orbits.

PSLV has a success rate of over 95% and has launched over 50 successful missions. It has also been used for space missions and for launching satellites for other countries.

PSLV has four stages and can launch payloads weighing up to 1,750 kg into polar orbits. ISRO is continuing to develop and improve the PSLV for increasing its payload capacity and expanding its capabilities.

Geosynchronous Satellite Launch Vehicle (GSLV)

The Geosynchronous Satellite Launch Vehicle (GSLV) is an Indian-made expendable launch vehicle developed by the Indian Space Research Organisation (ISRO).

GSLV is primarily used for launching communication satellites into geostationary transfer orbits.

GSLV has three stages, including solid rocket motors and liquid fuel engines. GSLV can launch payloads weighing up to 2,500 kg into geostationary transfer orbits.

The first successful GSLV launch took place in 2001, and it has since become an important part of India's space program, with over 14 successful launches to date.

[1]. https://en.wikipedia.org/wiki/Satellite_Launch_Vehicle

[2]. https://en.wikipedia.org/wiki/Geosynchronous_Satellite_Launch_Vehicle

[3]. https://en.wikipedia.org/wiki/Polar_Satellite_Launch_Vehicle

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