High Speed Approaches in a Sling TSi

[@williamkennedy2069]

Great video! I love trying testing out different things, see what works

[@williamkennedy2069]

Gimme jelly donut!

[@bendriscoll302]

Training out of a Charlie, I might have more "fast" approaches under my belt than normal ones. Personally, I like them fast. It's easier to keep the plane on a proper glide path with even an extra ten knots. I've never gotten so brave to take it to a one mile final, personally I slow down at three at the latest, but cool to see how fast a Sling can slow down.

[@justindwyer3430]

Very helpful video. When I used to fly out of Westchester in NY I’d fly the ILS at 135 kts in a Cirrus then yank the power off a mile or so out. The big three bladers really get the speed down. You’ve probably seen it, but Bambi has a video with Sean (rip) flying a TSi where he turns final at 150 kts and crosses the threshold at 70kts…

[@OneAlphaMike]

Cool about the Cirrus, I used to fly those, too. I will say that I'm a lot more comfortable pulling the liquid-cooled Rotax quickly back to idle than I would be doing that on a big-bore Continental! Yeah, I saw that video with Bambi & Sean, but I couldn't really see the airspeed indication or how long of a final it was. So, I wanted to prove it for myself! 😁

[@justindwyer3430]

@MooneyPilot Yes, Sean did sadly.

[@3blades476]

Brilliant Mike, and well demonstrated..

[@n118nw]

Why is the runway on the synthetic terrain off.. gps accuracy?

[@OneAlphaMike]

No, it’s only at this airport. I asked Garmin about it, and they said they’re using the location data provided by the FAA. Apparently the lat/long they have published is slightly off. There is a GPS approach there, and that is accurate. So it only affects the synthetic vision.

[@steveyoung6787]

Nice. Super cool topic... Where is the half mile test ?

[@OneAlphaMike]

That might be pushing it! 😁

[@elkstalker6236]

My dad flew for United. Wanted to see if he could land from Flight Level power off without adjusting power setting. Yes you can😂. I can remember which CA airport, maybe long beach?

[@ashokaliserilthamarakshan5079]

Nice one 👍

[@IlIlIlIlIlIlIlIl-v9h]

8:53 is it normal for the garmin runway to be that far off to actual?

[@OneAlphaMike]

Not normally. It’s right on at most airports, (you can see that on the first approach), it's just off at this one airport for some reason. I emailed Garmin about it, hopefully they can fix it.

[@Cess08van]

Chopping power off and slowing the airframe down doesn't seem to be a problem! But what does that sudden cooling do to the engine?

[@OneAlphaMike]

Not a problem at all for the Rotax. Unlike legacy engines, the cylinder and piston are both made out of the same alloy, so you don’t have differential expansion and contraction with heating and cooling. Also, the liquid cooling makes temperature changes less dramatic. Sling has discussed this in one of their videos; “shock cooling” is not a concern with this engine.

[@azcoyote007]

What is the red blinking light on your prop controller?

[@OneAlphaMike]

It's actually orange, and it just means the controller is driving the propeller pitch in the direction indicated.

[@azcoyote007]

Interesting. Why is it intermittent?

[@OneAlphaMike]

Because it's frequently adjusting the pitch one way or another.

[@bennettmckay1244]

Love your stuff Mike. I'm starting to price a build for a Sling HW, and you've got pretty much the exact panel I would be looking to replicate. Would you mind letting me know your approximate avionics cost?

[@OneAlphaMike]

About $28k

[@bennettmckay1244]

That's not as bad as I expected! I can make that work

[@EdwardHefter]

I didn’t hear the AOA indicator beeping like a cardiac arrest EKG as you landed. Do you not have that or have it turned off or something else?

[@OneAlphaMike]

I do have it, you can hear it on landings in my other videos. Not sure why we can't hear it in this video. Maybe I accidentally cut it out when I was editing.

[@flexairz]

Another pilot not using enough rudder...

[@OneAlphaMike]

What are you talking about? It's not perfect, but the ball is never more than about 1/8th out of center the whole video. Are you talking about the nose rocking back & forth due to the shifting/gusting winds? I'd rather accept some of that than the PIO's I've seen from overactive use of rudder.

[@flexairz]

@@OneAlphaMike The nose went from left to right during the flight. That is how you see that. The ball is too slow to react and requires you to look inside on the panel, where as by looking out you can see it happen (adverse yaw) in real time.

[@OneAlphaMike]

@@flexairz Okay. I'll grant you that I mostly fly jets, which have virtually no adverse yaw, so it's entirely possible that my feet have gotten lazy. However, the Sling TSi also has very little adverse yaw and needs very little rudder. Much of the yawing in this video is not even correlated to any stick movements, indicating it's not due to adverse yaw. (Some of it was, but not all of it.) It's just the shifting wind gusts, which I remarked on in the video. I don't try to counter every yaw disturbance with opposite rudder, that's a recipe for PIO and nauseous passengers. (In fact, if anything, at a couple of points I was guilty of overactive rudder!) It's similar to controlling approach speed in turbulent and gusty conditions. You don't try to counter every airspeed fluctuation like a throttle jockey. Instead you protect the Vref as the minimum but allow it to fluctuate above that within an acceptable range. All that said, the whole point of the video was to determine the deceleration distance of the airplane while descending on the glidepath, so I was definitely looking inside more than usual.