ISRO Scientist Mechanical case studies
ISRO Scientist Mechanical · Put your knowledge to work in context.
The ISRO Scientist/Engineer 'SC' (Mechanical) recruitment is run centrally by the ISRO Centralised Recruitment Board (ICRB) under the Department of Space, advertised in cycles such as ISRO:ICRB:02(EMC):2025 dated 27.05.2025, with the Mechanical post code BE002. It is aimed at mechanical engineering graduates who want a scientist/engineer career in India's space programme, and the pipeline is a Computer Based Test followed by an interview for screened-in candidates, ending in a published selection panel. The ISRO Scientist Mechanical case studies are 5 cases and about 5,367 words.
1Proof-Test Strain and Acoustic-Emission Anomaly on a Titanium Helium Tank
A 320 mm internal diameter spherical helium pressurant tank for a satellite propulsion module is being proof-tested. The shell is annealed Ti-6Al-4V, 4.5 mm nominal wall, closed by two electron-beam girth welds with a measured weld-land eccentricity of 0.3 mm.
1,048 words, about 5 min2Inducer Erosion and NPSH Margin in a LOX Turbopump
A 62 kg/s liquid-oxygen turbopump for a 10-tonne-thrust engine runs at 15,000 rpm behind a three-blade helical inducer. LOX enters the inducer eye at 92 K with a static pressure of 0.34 MPa absolute; the vapour pressure at that temperature is 0.13 MPa and the density is 1130 kg/m3.
982 words, about 5 min3Random-Vibration Qualification of an Avionics Bracket: Modal Shift and a Bend-Radius Crack
The avionics unit of a remote-sensing satellite bus is carried on a 6061-T6 sheet bracket, 2 mm thick, with two 90 degree flanges bolted through four M5 inserts to a honeycomb deck. The unit mass is 0.85 kg and the bracket 0.22 kg.
1,090 words, about 5 min4Regenerative Cooling Anomaly: High Pressure Drop with High Wall Temperature
A 10 kN LOX/RP-1 thrust chamber uses 60 milled cooling channels, each 1.5 mm wide and 4.0 mm deep, closed out by electroforming; the hot-gas wall is 1.0 mm of Cu-Cr-Zr. Chamber pressure is 7.0 MPa.
1,128 words, about 6 min5Fastener Pattern Stack-Up: A Functional Gauge That Accepts Every Part and an Assembly That Jams
A pump housing in 6061-T6 has six through-holes Ø6.6 +0.12/0 on a 100 x 80 mm rectangular pattern and bolts to a stainless manifold with six M6 tapped holes. The housing drawing gives the hole pattern a position tolerance of Ø0.3 at MMC to datum A (mounting face) and datum B (a bearing bore).
1,119 words, about 6 min