Infrastructure Facilities
High Speed Towing Tank (HSTT)
HSTT is the first of the Hydrodynamic Test Facilities set up at NSTL for carrying out Hydrodynamic Performance Evaluation of Ships, Submerged Bodies and their propulsors through Model Experiments under controlled conditions. The model tests conducted include resistance, propeller open water, self propulsion, flow visualization, wake survey, captive maneuvering tests using planar motion mechanism and seakeeping tests in regular and irregular head seas
Features
- Tank Dimension : 500 m (L) x 8 m (B) , 8m depth of water
- Carriage Speed : Ahead 20 m/s (max), Astern 4 m/s (max)( With an accuracy of 0.1 % of the set speed between 2 - 20 m/s )
- Wave Generator : Dual flap type, capable of generating regular and irregular waves (unidirectional) as per ITTC
- Planar Motion Mechanism :
- A Vertical Planar Motion Mechanism ( VPMM) System mounted on the Towing Carriage to carry out studies on the hydrodynamic characteristics of submerged bodies
- A Large Amplitude Horizontal Planar Motion (LAHPMM) Mechanism mounted on the Towing Carriage for undertaking study of manoeuvring characteristics and control effectiveness of surface ships
Cavitation Tunnel Facility
Cavitation Tunnel at NSTL is of vertical plane, closed re-circulating, variable speed, variable pressure type with Automatic Control System, Data Acquisition and Analysis System for operation, control and conduct of tests and Stand alone Acoustic Measurement System for acoustic data acquisition, analysis and extrapolation. The tunnel is used to conduct model tests with surface ships and submerged bodies and their propulsors for cavitation, propulsion and acoustic characteristics.
Features
- Test Section : 1m X 1m X 6m
- Flow Speed : 15 m/s (Max)
- Pressure Range : 0.1-3.0 Kg/Cm2
- Cavitation Number : 0.08-37
- Flow Non-Uniformity : <1%
- Background Noise : <90 dB (1-100 kHz,1/3 Octave, Ref 1 µPa
- Tunnel Material : Stainless Steel
Seakeeping and Manoeuvring Basin (SMB)
Seakeeping and Manoeuvring Basin is a state-of-the-art 135 m x 37 m x 5 m hydrodynamic test facility coming up in NSTL. The facility will be used for conducting model testing for prediction of seakeeping and manoeuvering performance of newly designed ships and submerged bodies under different environmental conditions and for optimizing the motion characteristics of the hull form and effectiveness of the control devices under various manoeuvers. Long-crested regular & irregular and short crested waves can be generated in the facility using the multi-element wave generation system. Active as well as passive wave absorption systems are also available in the facility to liquidate the waves generated within the basin. With Computerized Multi Motion Carriage both free running and captive model testing can be performed in the facility. SMB is an important facility for achieving self-reliance in the domain of hydrodynamic model testing.
Features
- Wave Generation System (WGS)
- Wave Absorption Systems (WAS)
- Measuring Equipment & Dynamometry (MED)
- Model Tracking System
- Data Acquisition & Analysis System (DAAS)
- Computerized Multi Motion Carriage (CMMC)
Wind Tunnel Facility
Features
- Test Section : 1.5 X 1.5 X 4.0 m
- Pressure profile over the body and control surfaces
- Max. Speed of Test section: 55 m/sec
- Measurement and visualization of flow at the boundary layer and wake of the model
- Measurement of turbulence & Wall shear stress
Environmental Test Facilities
Bump Testing
Features
- Payload Capacity : 1000kg
- Acceleration(peak): 40g,6ms & 25g,, 11ms
- Bump rate : 1to 2 Bumps per sec
- Table size : 1 m x 1 m
Temperature Chambers
Features
- Humidity Range : 10 to 95% RH
- Max. Dimensions : 2m x 2m x 9m
- Max. Payload : 2000kg
- Cooling / Heating : 1 to 20º C/min
- Additional features : Environmental stress screening and Mould growth
EMI / EMC Chamber
Features
- Anechoic Chamber size :17m x 6.1mx 3.9m
- Max. specimen size :11m x 2m x 2m
- Frequency range: 30MHz to 40GHz
Shock Tank
Features
- Double-walled Shock Tank (15 x 12 x 10 m) to carry out explosionstudies on structures, materials in free field
- Floating Shock Platform (FSP) for testing of equipment up to 15 ton
- Shock tube facility to simulate crash conditions and generate up to 3500 g / 65 msec half-sine pulse
Anechoic Room
Features
- Room Size: 10 X 10 X 6 m
- Max. Size of the specimen – 48m3
- Ambient noise < 25 dB (A)
- Suspended on neoprene rubber pads
- Provided with Silenced ventilation systems
- Low Cut-off frequency – 100 Hz
Vibration Test
Features
- Force Rating : 100kgf to 16000kgf
- Payload Ca : 1 kg to 3000kg
- Frequency : 1 to 2500Hz
- Max. acceleration : 100g
- Axes of testing : XX,YY,ZZ
- Waveform: Sine, Random, Sine on random, Random on Random and User defined
Torpedo Launch Recovery Vessel (TLRV)
Features
- Catamaran Hull
- Large Deck Area (750 m2)
- Range - 2000 nautical miles
- Endurance – 4 days
- Accommodation - 38 Crew + 13 Scientist
- After its commissioning in June 2015, the vessel would be operated by the Eastern Naval Command and will be used to carry out technical trials of underwater weapons and systems developed by NSTL, a naval systems laboratory of DRDO.
- The vessel has been designed with a unique hull form that significantly reduces its power requirements. It is 50 m long with a speed of 15 knots and can operate at high sea states and has a large deck area with launchers for deploying and recovering various kinds of torpedoes during the trials. It has a complement of 50 personnel including 13 Scientists and has the capability to undertake multiple trials during a single sortie.
Nagarjuna Sagar Lake Test Facility (NSLTF)
Features
- NSLTF facilitates sub-system proving trials of Underwater Weapons during the developmental phase in the confined waters of the lake.
- Depth of water in the lake varies from 110 ft (min) to 330 ft(max). The lake bottom is 260 ft above mean sea level
- This facility has a 2 bay Boat Repair Shop (BRS) and an air conditioned torpedo preparation bay. A 200 meter long 1 in 10 ramp jetty with set of rails extending from the inside of the BRS into the lake
- The test and trials range of the lake measures about 4 km in length, 2km wide and 30 to 60m depth of water
NSTL Range Technology Centre (NSTL – RTC)
Features
- Established under project NST 168 (sanction : 1995)
- Operational since 2004.
- Manned by DRDO and Navy personnel
- Ranges established
- Acoustic; Magnetics
- Steel Ship (SS)
- Mine Counter Measure Vehicle (MCMV)
- Electric Signature (ELFE) - under Project EAST
- MARS – Under Project EAST
- SWAMS – Under Project CRITECH