SSLV-D2/EOS-07 MISSION Home /SSLV-D2/EOS-07 MISSION

Feb 10, 2023

SSLV-D2/EOS-07 Mission is successfully accomplished

SSLV-D2/EOS-07 MISSION

The second developmental flight of Small Satellite Launch Vehicle (SSLV), SSLV-D2 is successfully launched on February 10, 2023 at 09:18 hours IST from the first launch pad at SDSC SHAR, Sriharikota. SSLV-D2 is intended to inject EOS-07, Janus-1 and AzaadiSAT-2 satellites into 450 km circular orbit, in its 15 minutes flight.

SSLV caters to the launch of up to 500 kg satellites to Low Earth Orbits on "launch-on-demand" basis. It provides low-cost access to Space, offers low turn-around time and flexibility in accommodating multiple satellites, and demands minimal launch infrastructure. It is configured with three solid propulsion stages and a velocity terminal module. It is a 34 m tall, 2 m diameter vehicle having a lift-off mass of 120 t.

EOS-07 is 156.3 kg satellite designed, developed and realized by ISRO. New experiments include mm-Wave Humidity Sounder and Spectrum Monitoring Payload. Janus-1, a 10.2 kg satellite belongs to ANTARIS, USA. A 8.7 kg satellite AzaadiSAT-2 is a combined effort of about 750 girl students across India guided by Space Kidz India, Chennai.

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Mission Objectives

  • Demonstration of designed Payload capability of SSLV in LEO
  • Injection of EOS-07 satellite and two passenger satellites Janus-1 & AzaadiSAT-2 into 450 km circular orbit.

SSLV-D2 Vehicle Characteristics
Vehicle Height 34 m
Vehicle Dia 2 m
Lift off Mass ~119 t
Vehicle Configuration SS1 + SS2 + SS3 + VTM

SSLV-D2 Mission Specifications
Parameter Specifications
Altitude (km) 450
Inclination (deg) 37.2
Launch Pad FLP
Launch Azimuth (deg) 135

SSLV-D2 Stages at a Glance
Stage 1(SS1) Stage 2(SS2) Stage 3(SS3) VTM
Length (m) 22.5 3.2 2.8 -
Diameter (m) 2 2 1.7 2
Propellant Solid (HTPB based) Solid (HTPB based) Solid (HTPB based) Liquid (MMH+ MON3)
Propellant Mass (t) 87 7.7 4.5 0.05
Action Time (s) 114.6 124.0 103.9 -

Payloads Accommodation in SSLV-D2

Payloads Accommodation in SSLV-D2

SSLV-D2 Flight Sequence

SSLV-D2 Flight Sequence


Satellites in SSLV-D2

Satellites Agency Mass (kg)
EOS-07 URSC, ISRO, India 156.3
Janus-1 ANTARIS, USA 11.5
AzaadiSAT-2 Space Kidz India, India 8.7

SSLV-D2 Typical Flight Profile
(Below information Based on FRR Issue-1 Rev-0 Data)

Event Time (s) Altitude (km)
SS1 Ignition 0 -
SS2 Ignition 123.7 94
SS1 Separation 124.0 94
S2C Separation 129.0 103
SPLF Separation 158.4 149
SS2 Separation 384.2 423
SS3 Ignition 394.0 429
SS3 Separation 674.9 450
VTM Ignition 683.4 450
EOS-07 Separation 785.1 450
Janus-1 Separation 880.1 450
AzaadiSAT-2 Separation 900.1 450

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