The DH-VTHT is a hybrid UAV system. It is hybrid because of its capability to Take-off, Land hover like a Multirotor and toward motion like a fixed wing aircraft. The systems is advantageous as it does not require longer runway for Take-off landing. The payload damage is highly reduced due to the VTOL capacity. The structural integrity and light weight of the aircraft is ensured by the use of carbon fiber composite honeycomb design.
This quadcopter Unmanned Aerial vehicle can be used for security and surveillance purpose. The important features include less weight, easy handling characteristics, portable GCS etc. The empty weight less than 2kg and a payload of upto 400 grams can be added with a 25 minutes endurance.
DH-HM is a next-generation UAV which can fly up to 4hours and lift payloads up to 4Kg. The secret behind this DH-HM long flight duration is a mixture of Li-Po batteries and an in-built 2000w generator which sustains the UAV. This is called a hybrid drone because the generator is fueled by gasoline. This multicopter is more like a mini helicopter.
Tethered Unmanned Aerial Vehicles (UAV) are ideally suited for applications that require more endurance built to withstand harsh environments. Also, high band width communication is possible because of optical fiber tether. The Tethered UAV based surveillance System is a solution for Border Security Force (BSF) applications by enhancing Electro optic (EO) surveillance capabilities thereby providing enhanced situational awareness and dynamic command and control functions. With the displacement of the EO payload at an approximate height of 100 meters, the operational capabilities of the EO sensor are enhanced.