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Geometry effects on flow characteristics of micro-scale planar nozzles

The study addresses the issue of heterogeneous findings on optimized half divergence angle of micronozzles used for propulsion. The performance and flow characteristics are compared at two distinct operating conditions, i.e., when the flow is mostly subsonic and supersonic in the divergent section. Results show an optimum divergence angle and length, maximizing the performance for a specific operating condition and nozzle size. It is noted that the inconsistencies in literature is mainly due to exploratory efforts of small data sets.

Development of a sensorless current control technique for high frequency link converters.

High frequency link bidirectional converters are characterized by a high frequency inductor current. Superior dynamic performance and saturation prevention requires sensing of this high frequency current and high bandwidth ADCs for subsequent signal processing. Typically Hall effect based sensors, having their own reasonable footprints and volume, are directly mounted on the power bus bar. This makes the realization of a highly compact bus bar structure more difficult. A sensorless current envelope tracking based scheme has been proposed which also do not require any high bandwidth ADCs.

New Missions in Pipeline

  • ISAT2 – A nanosat technology mission for demonstrating IIST cold gas thruster and Topside ionosonde
  • XNAV – A nanosat technology demonstration on navigation using X-ray pulsars
  • A science payload - Integrated Diagnostic Module to evaluate the effects of plasma discharge on spacecraft with Hall effect thrusters is proposed in the upcoming TDS-01 satellite onboard PSLV.
  • Faculty from the department of Avionics is included in the Inter Centre Study Team constituted for an advanced R&D technology project titled 'General Purpose Humanoid Robot with Human-like Degree

Ground Station

The IIST ground station can operate in the UHF for telecommand and telemetry of the INSPIRESat-1 at 9.6kbps. The S-band is exclusively used for receiving the data from the payload at 2Mbps. IIST built a ground station in the UHF and S-band for telemetry, telecommand and data reception from the spacecraft. IIST took the responsibility of owning the spacecraft. In addition, IIST with active support from VSSC developed the advanced separation system and sought mission opportunities as a co-passenger through ISRO’s workhorse PSLV mission.

Other Activites in SSPACE

Small-spacecraft Systems and PAyload CEntre (SSPACE) is an interdisciplinary centre involved in the development of satellite systems and mainly driven by students and faculty of IIST. The SSPACE center is involved in realization of payloads, related electronics, small satellites, assembly, integration, testing and ground station to carryout mission operations. SSPACE at the moment is involved in the following missions

Magudagiri campus

The Indian Institute of Space Science and Technology (IIST) is not located in Mangalagiri. It is situated in Valiamala, Thiruvananthapuram, Kerala. 

The IIST Magudagiri Campus, located in a serene environment, will serve as a world-class research hub, advancing space technology, fostering innovation, and supporting cutting-edge academic and scientific pursuits in aerospace engineering.


 

Successful launch of PILOT-G2 (GRACE) Payload in POEM-4- PSLV C60-SpaDex Mission

The student and faculty team of Small-Spacecraft Systems and Payload Centre (SSPACE), IIST has designed, developed, qualified and successfully launched the payload PILOT-G2 (GRACE) in the PS4-POEM platform of PSLV C60 SpaDex mission on 30th December 2024.

Payload Designation: PILOT-G2 (GRACE)

PiLOT-G2: PS4 in-orbital OBC, TTC & GMC
GRACE: GMC Reprograming and Communication Experiment

Objectives of the payload

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