Chinese UAV/UCAV development

A procurement document calling for research into a new electronic warfare system against drones. It has three requirements/components: 1) detecting, monitoring, and jamming frequency-hopping signals used to control drone swarms; 2) jamming, spooking, and interfering with satellite navigation signals, including GPS, GLONASS, Galileo, and Beidou; 3) an aerial detection and jamming platform that can be deployed via a tether(?).

by78 said:

I don't recall seeing this helicopter drone before. The landing gear appears to be arranged like a tripod.

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Some kind of recon drone?

Interesting they didn't get rid of the coordinates on the top left. It's flying somewhere in Aksai Chin not far from the line of Demarcation with India.

by78 said:

I don't recall seeing this helicopter drone before. The landing gear appears to be arranged like a tripod.

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Looks like Ziyan Falcon-10, from the company also producing Blowfish

Anyone got list and numbers of UAVs actually in service of PLA and air and naval branches?

So much stuff being churned out by private organisations, hard to keep track of what is being actualised

Most interesting find!!

Looks like a CH-5 XXL for maritime surveillance and in fact I find that green/blueish primer interesting, since we've seen it mostly on naval types like the new J-15B, the J-35, KJ-600 and the JL-10J

Deino said:

Most interesting find!!

Looks like a CH-5 XXL for maritime surveillance and in fact I find that green/blueish primer interesting, since we've seen it mostly on naval types like the new J-15B, the J-35, KJ-600 and the JL-10J

View attachment 97930

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For reference from what I could find, the extended range MQ-9 variant (Long Wing) has a wingspan of 79 ft/~24 m so the dimensions check out with an extended range and endurance version.

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The LQ-302 UCAV. It's designed from the ground up to operate as a swarm. Can carry observational payloads (synthetic aperture radars and electro-optical devices) as well as offensive payloads (anti-radiation warheads). Other specs are as follows:
– Take-off weight: ≥70kg
– Payload weight: ≥25kg
– Cruising speed: 150km/h
– Endurance: ≥3 hours
– Max combat radius: 400km

Two interesting research papers on ventral flaps for a flying wing design. They examine the use of belly flaps to enhance the take-off and land characteristics of a flying-wing design. This could prove useful for a carrier based drone, since space constraints mean that enlargement of the wings might not be feasible.

(Effects of belly flap on take-off and landing characteristics of a flying-wing vehicle)
Abstract: Taking a flying wing configuration model as the initial shape of flying wing configuration aircraft, the location and the deflection angle of belly-flaps in the take-off and landing process are studied by the method of numerical simulation, and the influence law of belly-flap deflection on elevator rudder effect and ground effect is obtained.The results show that when the belly-flap is located at 40% mean aerodynamic chord behind the center of gravity, a high lift enhancement efficiency can be maintained at high angles of attack, and there is a small change in the pitching moment.As the deflection angle of the belly-flap increases, the lift and the drag show a quasi linear growth, while the change of the pitching moment is small and can be trimmed by about 1° deflection of the elevator. When the belly-flap is deflected, the rudder efficiency of the elevator decreases by about 6%, and the increment of lift caused by ground effect increases, while the longitudinal static stability is decreased.


(Aerodynamic Analysis of Retractable Belly Flap for a Flying-wing Vehicle)
Abstract: In order to study the lift enhancement effect of the retractable belly flap on the flying wing configuration, a flying wing configuration model was taken as the initial shape of flying wing configuration aircraft, the distribution of crevices on the retractable belly flap are studied by the method of numerical simulation, and the variation of aerodynamic forces under different retracted states of the belly flap is obtained. Results show that, the retractable belly flap, when it is fully extended, can effectively lighten the air separation behind it and enhance the lift. When the crevice width is the same as the width of the hill shaped rudder, the effect of lift enhancement is the best. The pitching moment shows a quasi-linear growth with the decrease of the height of the retractable belly flap during the belly flap retraction process. Moreover, the lift enhancement effect of the retractable belly flap is better than that of the seamless belly flap at the same height.