Russian UAVs shot down by Ukrainian air defenses are almost entirely made of imported components. This is evidenced by the dismantling of drones that fell and were captured by the Armed Forces. That is, under the current sanctions, Russia will not be able to renew the UAV fleet, both reconnaissance and strike.
For example, the Impact UAV (Israeli IAI Searcher, assembled in Russia) has the following components: German 3W-55i engine from 3W-Modellmotoren Weinhold GmbH; American valve matrix Spartan XC3550 from Xilinx; fuel system elements from the Irish Tillotson; GPS-antenna of the American Antcom; Swiss navigation module from MicroEM; British dynamic measuring unit (DMU02 or DMU10 – depending on the year of manufacture of the UAV) from Silicon Sensing Systems; 9XTend 900 MHz radio frequency module, manufactured by the American company Digi International; WIZnet’s South Korean iEthernet W5300 network controller; GNSS receiver NV08C-CSM of the American company NVS Technologies AG.
The Eleron UAV is equipped with a 32-bit Swiss STMicroelectronics microcontroller; Japanese cameras Sony FCB-EX11DP and Olympus Stylus TG-860.
The Granat UAV consists of photographic equipment from the Japanese company Canon, electronic components from the United States from Intel and Pulse Electronics, batteries from the American MaxAmps; engine from the Czech Model Motors.
The Zastava UAV contains electronic components from Israeli Elbit Systems and Data Links and American Vweb, a German engine from Hacker Motor, an autopilot AP04M from Spanish UAV Navigation and a Swiss GPS module from u-blox.
Imported components of the Orlan-10 UAV: Chinese GPS-tracker HC4060 2H7A201 or STC 12LE5A32S2 35i; starter-generator PTN78020 from American Texas Instruments; engine with ignition module Japanese SAITO; French-Italian flight controller from STMicroelectronics; American Freescale Semiconductor pressure sensors; compass sensor HMC6352 from the American Honeywell; receiver receiver GPS LEA-6N Swiss u-blox; telemetry transmission module on the American Microchip ATxmega256A3 microcontroller, German RF3110 transmitter from Municom and receiver DP1205-C915 from AnyLink.
As you can see, there are imported components in almost every Russian UAV, and in large quantities. It appears that the only thing that is really Russian in this technique is the body (plastic or wood) and the parachute (fabric). But there is a question on what equipment the same plastic and fabric are made and where the wood comes from, most likely, all this is also imported.
That is, with the current sanctions, Russia is unlikely to be able to replenish its fleet of drones, except to buy new ones in Iran because China will not expose itself to US sanctions.
As of March 29, 2022, according to the General Staff of the Armed Forces, 71 Russian UAVs of the operational and tactical level were destroyed. The stock is melting and that’s excellent.