English: The second developmental flight of Small Satellite Launch Vehicle (SSLV), SSLV-D2 is scheduled for 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.

More Details

SSLV-D2/EOS-07 MISSION Brochure PDF - 20.3 MB 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