3W-International’s Partner Sky Power and A-techsyn Launch The First Sky-Power Driven VTOL

A-techsyn — manufacturer of VTOLs, fixed-wing UASs, target-acquisition drones, and communications and
autopilot systems — will introduce the first VTOL equipped with one of 3W-International- performance-
partner Sky Power’s engines at Xponential 2018 as part of the 3W-Interntational exhibition stand. A SP-110
FI TS based on 3W-International GmbH’s 110 ccm model is involved here. The engine can be deployed both
as vertical drive and for power generation.

A-techsyn Ltd. is a company from Shannon, Ireland, which has been intensely occupied in recent years with the
development of UASs and the associated communication and flight systems. The CGT45-SLT vertical take-off
aircraft was equipped with the retrofitted engine as part of the collaboration with 3W-International and Sky
Power. The CGT45-SLT has been used in Turkey for some time now. However, we were looking for a new
engine concept in order to increase the range and payload, explains Gokhan Celik, managing director of A-
techsyn. That’s why the Irish company contacted 3W-International. The standard 3W-110i B2 TS engine’s
performance parameters would also have sufficed, but ultimately the choice fell to the SP-110 FI TS from Sky
Power’ according to Karsten Schudt, managing director of 3W-International.

The CGT45-SLT is a 4.5 m wingspan, T-tail UAV. It uses electric powered motors for take-off and landing and
does not require a runway or catapult. The VTOL can take off from a table and land with high accuracy on a 5 m
× 5 m surface. It is a composite airframe with 4 kg payload capacity. At the basic set-up, CGT45-SLT uses 3
separate communication systems for datalink, video-link, and the FPV. The data link system operates at
900–922 MHz, FPV at 1.2 GHz, and the video-link at 2.4 GHz. The video-link uses IP communication and 128-bit
SSL encryption to secure the data transferred. Video and data may be broadcast if desired. The CGT45-SLT has
a 50 kg MTOW (including payload). It can be operated by only two people. The CGT45-SLT is controlled by A-
techsyn’s flight controller AvionicsMini. This flight controller is using CAN BUS interface to communicate with
the new ECU030 by Sky Power.

Beside the ECU030, the SP-110 FI TS is equipped with the new HKZ215 ignition from Sky Power too. Thanks to the two new systems, the engine can be tuned exactly to environmental conditions as well as to the customer’s
wishes, explains Karl Schudt, managing director at Sky Power. The system has four ignition channels with two
separately settable injection nozzles. Pump pressure is regulated electronically. A cold-start function of the
engine is possible without further ado. The automatic controller adjusts the fuel mixture to the current cylinder
temperature, air pressure, and exterior temperature. The high-performance HKZ system was developed for
significantly greater ignition powers. The engines overall fuel efficiency is thereby enhanced and the exhaust values improved. With the new ignition and injection system, we achieve better power performance in 3W
engines, plus a significant reduction of fuel consumption, explains Karl Schudt.

In addition to the CGT45-SLT, A-techsysn will exhibit its own autopilot, PilotUS, as well as further systems
developed for its own flight systems, on the 3W-International stand during Xponential.

3W-International, Sky Power, and A-techsyn are located at stand 2210.


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