Reverse Engineering Reveals Details of Iranian Shahed Drone's Components

The air data computer from a Shahed-136 drone underwent reverse engineering by Le labo de Michel, detailed in a YouTube video. This computer provides airspeed and altitude data to the drone’s flight system.

The circuit board is compact and features two air pressure transducers: one for altitude measurement and the other for airspeed. Data transmission occurs via an RS232 serial line, and there's a JTAG port for microcontroller programming.

The pressure transducers appear sourced from the Slovenian company HYB Sensor, possibly models HPSD 3100 or HPSD 3000.

On the reverse side of the board is an STM32G071 microcontroller by European company ST Microelectronics, accompanied by a voltage regulator for the analog-to-digital converter's reference voltage.

The microcontroller records temperature and pressures, outputting airspeed and altitude data five times per second, albeit with somewhat detailed output characteristic of commercial off-the-shelf products.

The model number for this air data computer is ADC-PLS-002.

Monjigraphic, an Iranian company specializing in labels, displayed an example of their work: the decal affixed to the Shahed's air data computer, affirming its origin in Iran.

The findings contribute to a deeper understanding of the Shahed-136 drone's capabilities and constraints.