A brief knowledge about future space exploration by using Reusable Launch System (Reusable Launch Vehicle).

1. Technical Seminar On
REUSABLE LAUNCH SYSTEM
Presented by: Balaji Jadhav

2. WHAT IS REUSABLE LAUNCH SYSTEM ?
• A Reusable Launch System (RLS) is a space launch
vehicle which can be used for several space missions.
• A Reusable Launch System is the space analog of the
aircraft. The main objective is to return the first
stage/boosters of a launch vehicle at the launch site.
• The main advantage of RLS is that it can be used
multiple times, hopefully with low servicing cost. A
successful RLS will decreases the missions cost and
make space travel more accessible.

3. BEFORE RLS
• The parts which move at a very high velocity shred into
smaller pieces while entering the earth's atmosphere
and are usually made up of light and thin aluminium.
• Some small parts go around orbit of earth which
increase debris in Low Earth Orbit (LEO).
• When the boosters run out of fuel, they are detached
from the rest of the rocket (usually with some kind of
small explosive charge) and fall away. The first stage
then burns to completion and falls off.

4. HISTORY
• The thought of RLS was proposed in 1950’s, but serious
attempts of RLS started at 1990’s with the space shuttle
programme.
• Space shuttle was an reusable launch vehicle (RLV)
which flew into the space with the help of two rocket
boosters and then used to glides back down like an
aircraft.
• It was intended to reduce launch costs below those of
expendable launch systems, but instead ended up being
more expensive. The last Shuttle was retired in 2011.

6. TODAY
• SpaceX is a recent player in private launch market
succeeding in converting its falcon 9 expandable rocket
into partially reusable rocket by returning the first stage
of reuse in 2015.
• Blue Origin New Shepard rocket became the first proven
Vertical Take-off Vertical Landing (VTVL) which can reach
space upto 100.5 km.
• Government space agencies such as NASA, ISRO, ESA
and ROSCOSMOS are also developing in field of RLS for
future space missions which will make it more
affordable.

8. DESIGN OF FALCON 9
• Function: Orbital Launch Vehicle
• Height: 70 ft
• Stages: 2
• Payload: 22,800 Kg
• Engine: First Stage (9) - Merlin 1D+
Second Stage (1) - Merlin 1D Vacuum+
• Fuel: RP-1 & Liquid Oxygen
• Thrust: First Stage - 7,607 KN
Second Stage - 934 KN
• Material: aluminium-lithium alloy

9. HOW IT WORKS ?

11. CO$T

13. Ariane 5 ECA ($165-220M)
Payload Capacity – 16,000 Kg
Falcon 9 ($50-62M)
Payload Capacity – 22,800 Kg

14. CONCLUSION
• Highest development cost and technical risks.
• Technology is within current state of art.
• More promising then ever before.
• Cost for launching becomes much cheaper as it reduces
material cost due to reusability.
• Future RLV should be constructed within low cost and
use cryogenic engine for all stages.

16. THANK YOU………