VSkylabs Scheibe SF-25 – more details !
Hello my friends !
Before start, merry Christmas !
News about the SF 25 project are available since few hours.
I’m taking a short time-out to share some more details regarding the project.
OK…some general information…I’ve started this project along with the VSKYLABS Phoenix Air Phoenix U-15 motor glider, somewhere around the beginning of the year (2017). These two projects were some kind of “twin projects”, but the U-15 got to be completed first, as its real life designer (Martin Stepanek – Phoenix Air Czech Republic) was available for me (he is such an amazing person!), allowing me a great deal of understanding regarding the U-15, from technical matters to flight performance and flying characteristics. It was time for the U-15 to take over, leaving the SF-25 behind. Since then, the SF-25 project made progress slowly, right until the “critical mass of development” had reached…and once that happens…the project turns “hot” at VSKYLABS…
So, current project status…flight testing and evaluation phase are completed (!). The aircraft is a joy to fly and to glide, feels a bit lazy when cruising around, mainly because of the motor, prop and wingspan specifications. I will start to post updated videos and screenshots within a week or so.
Detailing and “tailoring” the whole thing into a high-definition looking and working system is on the go (3D modeling and all around engineering). A lot of focus is given to cockpit detail.
Cockpit panel layout:
The SF-25 panels are very much different from aircraft to aircraft, having the panel itself taller or shorter, with a variety of avionics combinations. You can find a really…really messy front panel, with switches and gauges scattered around without any logical order, but you can also find more ordered and uniformed configurations too. Same goes to avionics – from almost GA standard to almost a minimal glider type configuration.
Test flights are currently being made with three different variations:
“very equipped”, analog panel, with artificial horizon, NAV instruments (VOR/ILS) and so forth…
“G1000” (!), a somewhat very boring cockpit environment for this kind of classic aircraft that is being flown by hand with great skills…
“Minimum requirement” analog panel.
I’m finding the aircraft most interesting to fly as the avionics features drops down, with a “Minimum requirement” analog panel.
Down is a screenshot, (it is quite outdated though), showing the general principle of a “Minimum requirement” panel layout. This kind of configuration, with slight changes, can be found in many real, flying SF-25’s.
* Instruments markings and scales are only for demonstration purpose.
You can spot a GNS530 installed underneath the panel. The short panel configuration (“short” meaning that the panel itself is narrow) is allowing this installation with enough leg clearance for the left-pilot. The Magnetic Compass is, of course, attached to the animated canopy. A glued-Flexiglass type of installation is existing in the current test/development flying prototype, but I haven’t decided yet which one “flows” better with the cockpit atmosphere.
Development is progressing at full power, mainly in-cockpit 3D modeling, texturing and engineering, as the schedule for releasing this aircraft is aimed for the second half of January 2018 (oh! it’s about three weeks to go!).
Stay tuned for more details!