Ukrainian Engineers Presents Pulse Jet Engine Hrim-17 for Drones

Engineers from the Independent Design Bureau have presented a new pulse jet engine, the Hrim-17, designed for use in light unmanned aerial vehicles.

The development is currently undergoing ground tests, the developer told Militarnyi at the Brave1 Components event on December 3.

The Hrim-17 has compact dimensions: a length of 940 mm, a diameter of 100 mm, and a weight of only 1980 grams. The engine is capable of producing a minimum thrust of 2.5 kg and a maximum thrust of 7 kg. The operating thrust is automatically limited by 90% to 6.3 kg.

The fuel used is F100 gasoline. When operating at 90% thrust, the engine consumes 6.3 liters of fuel per hour. The maximum body temperature reaches 800°C and the sound pressure level exceeds 140 decibels.

Power consumption is 48 W at full thrust, powered by a 12 V source. The maximum continuous operation time is 15 minutes, and the total resource is up to 3 hours.

The basic kit includes the engine itself, a launch valve, an automatic fuel system, and a ground-based ignition system. To start, you additionally need an air source, two 12V batteries, and a remote start sensor.

The developer notes that the Hrim-17 can be adapted for different types of drones.