DRDO and PSU's

[Anants]

A simple google search got me these companies manufacturing BLDCs in India -

Leading BLDC Motor Manufacturer Globally -

Our world class BLDC motors are available in 12V BLDC Motor, 24V BLDC Motor, 36V BLDC Motor guise, with speeds ranging from 1,000 RPM to 10,000 RPM and torque ranging from 0.3 Ncm to 120 Ncm. They can be integrated with different types of Gearboxes, and Controllers.

mechtex.com

www.compageauto.com - Leading PMSM & BLDC motor manufacturers in india

100% MADE IN INDIA BLDC PMSM MOTORS & CONTROLLERS FOR ELECTRIC VEHICLES

www.compageauto.com

BLDC motors | BLDC drives supplier, Manufacturer in Pune, India

Jayashree Electrodevices provide BLDC motors, BLDC drives at best cost in pune, Mumbai, Nashik, UP, MP, Chhattisgarh, Chennai, Tamil Nadu, Kolkata, Bangalore, Bengaluru Gujarat, Ahmedabad, India. It is the best BLDC motors, BLDC drives supplier, Manufacturer company.

jayashree-electrodevices.com

And I am sure there are many more.

of the the three only Mechtex claims it manufactures drone motors. And currently there is only one product listed dm1020 for 30 kg load. Other two manufacturers don't manufacture any drone motors. None of them manufacture small BLDC and coreless motors which are used in FPV drones. What does that tell you - right now from where the motors are being sourced?

 

[mist_consecutive]

of the the three only Mechtex claims it manufactures drone motors. And currently there is only one product listed dm1020 for 30 kg load. Other two manufacturers don't manufacture any drone motors. None of them manufacture small BLDC and coreless motors which are used in FPV drones. What does that tell you - right now from where the motors are being sourced?

???

Am I tripping or are you ? I can definitely see more than 1.




For the other 2 websites I mentioned both have mentioned "100% MADE IN INDIA" being their USP. They also have plethora of options.

 

[Anants]

???

Am I tripping or are you ? I can definitely see more than 1.

View attachment 23656


For the other 2 websites I mentioned both have mentioned "100% MADE IN INDIA" being their USP. They also have plethora of options.

Did you care to click and see each and every motor and its purpose? Do you understand not every BLDC motor is drone capable? And did you bother the go through other websites and see products listed??? Or better show me which drone manufacturers are their customers.

Is this an answer just for sake of it - or there is some effort on your part? If not latter - I suggest you wait for upcoming Saurav Jha's IAH episode on this very topic. The issue which me and Shade raised is quite serious.

 

[shade2]

The issue which me and Shade raised is quite serious.

Not just you and me, even twitter Defense bros are on it and one patrakar from India Today


View: https://x.com/AdithyaKM_/status/1885380914345034174


View: https://x.com/pradiprsagar/status/1885359519812718912


Anyway it seems to me that the ez solution to this( controller & electronics ) is to go fibre-optic
Chinku or Paki can't haxxx or jam the drones that way


ofc for motors and batteries and all are parts supply issues, so dhandhos have to be forced/incentivized to produce those here, better get some baboons to work on making policy for this.

 

[Ayan Barat]

???

Am I tripping or are you ? I can definitely see more than 1.

View attachment 23656


For the other 2 websites I mentioned both have mentioned "100% MADE IN INDIA" being their USP. They also have plethora of options.

Even if we leave all the terminologies like brush-less or coreless, everything boils down to the fact that motor used in FPV drones are insanely powerful (and here powerful means high power to weight ratio). To understand why, we must take a quick look at how FPV drones actually fly. Helicopters use a very sophisticated and elegant approach where a carefully designed airfoil is slowly rotated, constantly changing the angle and lift is generated which pulls the helicopter upwards. FPV drones are bit brute in their approch, they use to aerodynamic method of "fan goes brrr". The props are used to throw air downwards, this generates thrust and it's literally thrown upwards. From a technical point of view a FPV drone is closer to a F-35B or Harrier than to a helicopter.

Hence all the emphasis is on high RPM, the higher the RPM is the more thrust you'll generate as more volume of air would be accelerated per unit time. The propellers are not directly bearing the load of the vehicle so that's why torque is not a priority here. It's very typical to see BLDC motors for these applications reaching a RPM of 40,000.

That's why the way the "power" (for lack of better terms) is calculated in these BLDC motors are also different from the typical Newton meter or horsepower. We use the term KV; derived from the expression: total RPM/Voltage. [well actually it's KV = RPM/(V – (I*Rm)) but no need to dive that deep]

This is the KV rating of just a COTS "hobby" motor, and it's typical in this category. For dedicated RPG warhead lifting motors, this goes even higher

Now compare these motors with those from that website.
• Model BO22(3W) - 9350RPM @ 12v so 9350/12 = 779KV
• Model BO22(5W) - 9350RPM @ 24v so 9350/24 = 389KV

Hope this helps in clarifying a bit

 

[Ayan Barat]

Anyway it seems to me that the ez solution to this( controller & electronics ) is to go fibre-optic

Fibre optics is excellent for short ranges, but as the range increases multiple issues start to arise.

The true solution to jamming or hacking is military grade encryption, frequency hopping. But the problem is that as of now we haven't miniaturized and made it cheap enough to fit on a small one way drones. That's why we're forced to use commercial radio T/Rx, susceptible to even the slightest EW.

have to be forced/incentivized to produce those here, better get some baboons to work on making policy for this.

And when was the last time a "forced" thing has indeed given the desired results? Few days ago TRAI forced the TelCos to launch a low cost, calling only plan for people not needing internet. Tell me how well that "forced" step worked.
Let's talk about incentives. You won't believe how much incentives we offer on paper for manufacturing; PIL, tax rebate, Input Tax Credit, import/export exemption, credit line, R&D subsidy, Special Economic Zones and what not, but still...

In my opinion, there are four key problems in defence manufacturers which applies to this topic of BLDC motors too
• we're cursed to be devoid of things like innovation, R&D, scientific temperament; instead we want easy money. So why bother investing in R&D to make an innovative drone when you can simply import something inferior and sell it at a handsome markup. All this is even more heartbreaking considering we used to be the pioneers of science and philosophies like Sankhya and Jnana Yog some 3000 years ago, anyways leave it
• we won't do something unless there is a sure shot guarantee of getting a good ROI. How many times have you heard companies making something on their own and approaching the military to try it? And reverse this scenario where Army issue a tender and firms no one has ever head of like "Golu Mekaniks/Jai Mata Di Traders/Sharma Welding Shop/Manoj Steel Works" come in hordes for a rifle when they don't even know the difference between short and long stroke piston
• there is no civilian market. In USA, even for guns you've a civilian market which complements the MilLE markets and makes things very very easy. SIG Sauer makes a rifle for Army and loses the tender; no issues it'll sell to civilians. Colt makes a carbine for civilian but no one's buying because of high cost; no issues they'll get a military contract and use this economies of scale to reduce the cost for civilian market.
Do we have the level of hobby drone market here in India like they've in USA or China?
• last but definitely not the least...bureaucratic redtapism. I guess I don't need to elaborate this

Kaafi bakaiti kar liya na? Good Night

 

[crazywithmath]

And when was the last time a "forced" thing has indeed given the desired results? Few days ago TRAI forced the TelCos to launch a low cost, calling only plan for people not needing internet. Tell me how well that "forced" step worked.

A combination of belt treatment and incentives has worked very well in the electronics sector. It will work here too. Slap tariffs/anti dumping duties and dhandhos will fall in line - they have to, anyway! I know there is the question of national security involved here but even if viewed from a simple market access pov, we don't have to feel bad about treating chong exports unfairly because chongs do it all the time.

Speaking about TRAI, telcos have introduced cheaper calling/SMS only plans, no?