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But the Chetak is small enough to not need them! Which is not the case of the Dhruv. And just so that you know, the current tender needs all helos in the fleet to have ASW capability. Dhruv has that! All it needs is hydraulic rotors.. why do you think that the organisation that has pioneered...

No, unfortunately, HAL has not developed hydraulic folding rotors for the Dhruv. They have made the rotors foldable but manually. And yes, that's the ONLY reason. You cannot store a chopper in the narrow hangars of a ship with rotors wide open and there is no space to bring a winch to fold them...

Hydraulically operated folding rotors. Simple

Two air launched torpedoes and a dunking sonar will come in at around a tonne. Add the hydraulic gear for self folding rotors and 10-12 sonobuoys you get about a 2-2.5 tonne payload. Sonobuoys are launched from rotary bays or through fixed chutes on aircraft... that's what makes it so...

Not everything that is indigenous should be blindly be inducted into service (especially when it comes to specific roles such as ASW and CSAR) Now the Dhruv is a very good General Utility helicopter and equally good at SAR. Those are the roles where Dhruvs are being inducted in relatively large...

I have iterated time and time again. Implement automatic folding rotors on the Dhruv, the IN will buy them in droves! Otherwise, chances remain slim except beyond present 16 (and another 16 on order)