The Naval Science and Technological Laboratory (NSTL), part of the Defence Research and Development Organisation (DRDO) in India, has issued a tender focused on investigating the cavitation behaviour of a corvette hull. This initiative is part of NSTL’s broader mission to enhance the design and performance of naval vessels through advanced research and testing, according to DSCI X (Twitter ) handle.
The RFP for 8 Next Generation Corvette (NGC) vessels worth ₹36,000 Crores was issued in late May 2024. The contract is expected to be signed next year with two shipyards with the L1 winning 5 ships. The warship will be based on a new ~120m long design by Warship Design Bureau.
The Indian Navy will witness a significant increase in the number of VLS cells across its fleet in the next 6 years. The table below includes major warships ordered/under construction for the Indian Navy. The Indian Navy’s fleet will add more than 600 cells to it’s fleet by 2030.
Meanwhile, The Indian Navy will add 120 cells to its fleet in the next 12 months with the commissioning of INS Surat, INS Nilgiri, and INS Tushil.
Importance of Cavitation Studies
Cavitation is a critical phenomenon that affects the performance and efficiency of naval vessels. It occurs when the pressure in a fluid drops below its vapor pressure, leading to the formation of vapor bubbles. These bubbles can collapse violently, causing damage to the hull and propellers, and can significantly impact the vessel’s manoeuvrability and acoustic signature.
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NSTL is equipped with state-of-the-art facilities, including a Cavitation Tunnel, which is one of the most advanced in the world. This facility allows for detailed studies of cavitation inception and behavior, enabling researchers to measure the acoustic radiation caused by both cavitating and non-cavitating conditions. The insights gained from these studies are crucial for optimizing hull designs and improving the overall performance of naval platforms.
Objectives of The Tender
The tender aims to engage experts who can conduct comprehensive investigations into the cavitation behaviour specific to the corvette hull design. This includes:
- Model Testing: Utilizing hydrodynamic test facilities to simulate real-world conditions and assess the cavitation characteristics of the hull.
- Performance Analysis: Evaluating how cavitation affects propulsion and manoeuvrability, which are vital for operational effectiveness.
- Acoustic Characteristics: Understanding the acoustic signatures produced during cavitation, which is essential for stealth operations.
The NSTL’s tender for investigating the cavitation behaviour of a corvette hull underscores the importance of advanced research in naval technology. By leveraging modern testing facilities and methodologies, NSTL aims to enhance the design and operational capabilities of India’s naval fleet, ensuring they remain competitive and effective in various maritime environments.
(With Reporting by DSCI)
