Propulsion techniques in unmanned aerial autos (UAVs) should perform reliably. For the reason that engines are the first mission-critical part of a UAV, you will need to show their reliability. That is more and more demanded by the trade from engine producers.
Sky Energy GmbH, subsequently, examined its SP-55 TS carburettor engine to show its endurance and reliability utilizing excessive stress working profile per FAR33.
“After a take a look at interval of 150 hours, in addition to one other 30 run-in hours previous to testing, the SP-55 TS efficiently accomplished the take a look at,” Karsten Schudt, Managing Director of Sky Energy GmbH, seems to be again on the take a look at. Previous to beginning, varied goals had been outlined that had been to be achieved with the endurance take a look at. These included load restrict and endurance information. On the identical time, the airworthiness of the engine was confirmed and documented by Sky Energy qualifying reliability in opposition to outlined FAA requirements.
“And, in fact, we needed to gather information to additional assess product working limits, upkeep schedules, and hourly working prices as they relate to the product life cycle,” says Schudt, describing the take a look at goals.
The SP-55 TS is an air-cooled, 2-stroke, single-cylinder engine, with a displacement of 55 cc (10.37 cu in). The engine makes use of Sky Energy digital ignition and a Walbro HDA6A carburettor for gas supply. The gas used within the take a look at run was unleaded gasoline, in 4 totally different variations, at a 50:1 oil premix ratio.
Engine energy is three.07 kW (four.18 hp) at 6500 rpm. The engine is designed for a direct-drive propeller in a thrust or tug configuration.
The take a look at setup was carried out on Sky Energy GmbH’s stationary engine take a look at stand. Testing was performed based on a specified most temperature and velocity profile for roughly eight hours per day till a prescribed take a look at length of 150 hours was achieved. “Along with part hours, engine telemetry, environmental circumstances and gas consumption, all take a look at outcomes had been documented, evaluated and summarized in a take a look at protocol,” Schudt mentioned.
On the finish of the each day take a look at cycles, the engine was subjected to an inspection based mostly on a guidelines to detect adjustments at an early stage, doc them and rectify them if mandatory. After 150 hours, the engine was faraway from the take a look at stand and subjected to a full. “The engine demonstrated the reliability we anticipated within the take a look at. However, we additionally gained new insights, akin to using totally different fuels.
For instance, mixing Aspen two-stroke gas combination with Shell V Energy or Whole Tremendous Plus achieved the very best outcomes by way of decreasing deposits on the piston and cylinder. The upkeep intervals we specified additionally proved to be optimum,” explains Schudt.
About Sky Energy
Sky Energy GmbH is a number one producer of 2-stroke combustion- and Wankel engines for UAS (Unmanned Aerial Techniques) and hybrid purposes. In addition to in-house growth and manufacturing, Sky Energy GmbH produces all engines in Germany. Customized diversifications, new developments and steady efficiency enhancements of the combustion engines are ongoing firm goals.
Extra info: www.skypower.on-line
Please give a like or touch upon Fb for help Us
Go to our store Finest Drone Store
Go to our sponsor Virtualrealityuse