Welcome in another episode of ParaAnalysis. I’m Jarek and Jarek again and again Jarek. Two Jareks. Yet again we have something quite interesting, for you guys, so come watch it with us. PARAANALYSIS The content of this video is only subjective interpretation. We don’t intend to offend or lecture anyone. I’ll start with playing this video at normal speed. In normal pace and we will see what can we analyse here. You can see that Jarek? Don’t you? Of course. I can see “fiku-miku” Fiku-miku on niviuk On Niviuk. The movie is from some SIV yes I muted it for now I’ll turn the sound on later, for everyone to hear the instructor. Yes, It’s an important thing in this episode. yes.. BOOM. Very dangerous, hard impact I’ll rewind in a little bit. We can see the pilot during SIV over a water. We don’t know where exactly. I couldn’t find the location. One thing for sure-over water. that’s for sure. The instructor, who navigate the pilot, speaks in English. The pilot flies on Niviuk. I’m not sure about the category of the wing. I can’t recognise that here. The instructor navigate him correctly into SAT SAT is a figure where the pilot, during entering a spiral pulls harder on the inside brake Weight-shifts to the inside of the turn with his left arm He’s turning right here so with the left arm he is pushing against risers, on his left side Thanks to that the turn radius gets shorter The wing is moving positively forward The pilot starts making circles backwards and he enters SAT Where decent rate depends on how the SAT is performed between 3-8m m/s It all depends on the wing being flown, wing load, etc. Because the radius shortens the rotation speed is much faster than in a spiral which causes creation of additional lift and affects the sink which I mentioned just before The instructor tells him that during SAT he can he can play with controls by pulling more or less of it the inside break of course and when he does that this SAT gets more vertical, or the wing skews with the leading edge facing horizon. We might not be able to see that here But I’m just telling you how does it look like from a perspective of a pilot who can perform that figure perfectly From experience More or less from practice And that’s pretty much it. The pilot makes a SAT. He has it nicely set up perpendicular to horizon. and at some point he starts the exit. Right now. so looks like he should be able to exit without any special effects. Unfortunately, that’s not the case. For some reason the pilot stays in quite spinned out spiral and I am convinced he doesn’t do it consciously because he flies arms up here we can see that there’s not much input Nevertheless he’s in a fast spiral If I may interrupt It looks like he is still leaning against the left side risers That could have been one of the reasons he hasn’t done anything with the control can you see that. You think so? However, just as we paused it last time it looked like he wanted to pull in some of that brake. Here it looks like his left arm is down Can you see that? His left arm looks like he pulled it down. at least I think so… But in the last turn he evidently had his left arm straight, against the risers We apologize for small technical difficulties with the magnifying glass. Jarek, please continue. I’ll go back to the moment where he exits the SAT. so it should finish with exit trough a spiral but that’s not how it ends. The pilot remains in a steep spiral facing the water. and I think he has a problem with exiting that spiral I’ll turn on the sound, where we can hear the instructor shouting in the radio Passing over additional commands but the pilot is not able to get out of it and here we can clearly see He is braking wrong side of the wing he is turning to the right, the rotation appears on the right and it’s the right side of the trailing edge that is bent Left one is straight He’s even pulling more on it If he wants to exit the spiral, why is he pulling on the right control and he doesn’t break the left side some questions should be asked… and again we can see the right side of the trailing edge is bent he rotates to the right and he deepens that rotation by pulling in that right brake and the left trailing edge is not being braked In this configuration he hits the water it’s not a soft touchdown It’s worth to mention There were accidents in the past very serious ones, during SIV’s associated with bad exits from spiral dive where high speeds on impact can really do some damage I think the main reason is before I turn the sound on, so we can listen to the instructor who was giving instructions on radio Most of the pilots who attend SIV I’m talking trough experience, because many years ago I conducted a few SIV’s and I trained a few pilots The problem is During SIV the pilots want to try every move possible, at all cost and often they want to try simple acro figures which they are not prepared for Thing is the correctly leave a SAT you have to know how to leave spiral dive because in the moment of exit of SAT we come to a point where the wing is positioned with the leading edge paralel to horizon Right now we have this moment and that’s the point when pilot should brake the outside of the wing accordingly the outer side of the turn to increase the angle of attack on the outside of the turn, and to slow down the whole rotation but it doesn’t happen here. The pilot flies with arms up The wing takes vertical position in relation to horizon. and gains speed. That’s why I think some mistakes have been made here because Why to do a SAT with a trainee if we don’t know, whether he mastered spiral dive and if he can get out of it. If his body is use to certain G forces, and can handle them Therefore I think Going for such a SIV training we have to specify very well, cooperating with the instructor, what is our capability and the instructor should make a decision whether its appropriate to move on to more demanding figures just because he wants to see something new or maybe stop it at some point, as it could be a threat to his life and this movie is a clear example of that Pilot execute basic acro figure but in reality he is not able to exit a simple spiral dive which should have never happened. Practically from start to finish he does the same thing yes He turns right all the time and zero reaction till the bitter end Exactly. Now I’ll rewind it again and will play it with sound What can I say about it… I can say that the instructor correctly navigates him to SAT and correctly assesses the moment when pilot should pull on the brake and the pilot himself correctly follows the instructions and he enters the SAT Everything is OK. However when the pilot exits the SAT the commands of the instructor are not correct anymore why? Because he says ” brake the both sides of the wing” in English This is a problem. because this is not how we exit spiral dive. According to all the practical knowledge I have also from SIV and acro figures I perform The way to exit spiral dive is to brake the outside of the wing for a while for certain amount of time and the brake travel distance have to proportional to incline angle of the wing in regard to horizon, and the force appearing on the left side of the wing Unfortunately I can’t tell how much exactly Each construction of the wing and configuration we fly in, requires different input But here the pilot should have pulled left control down for a while and hold it there for a while that would make the wing slow down in rotation and he would have started exiting the spiral dive but he receives wrong instructions he is being told to brake both sides of the wing and its not clear whether the plot doesn’t understand what should he do because to instruction is to complicated to apprehend if he is disorientated by what he hears or if he follows instructor’s orders Clearly he doesn’t do as the instructor says we can evidently see that this one side has no brakes on yes we can see that the inside of the wing is being braked and the outside is not although he has a light brake on Now we can see he has the brakes on, because he have heard to brake the both sides of the wing and it doesn’t change anything in this configuration yes, especially, when he pulled both brakes at the same time he, in addition, pulled more on that side which was speeding up already Exactly. so the angle of attack in such steep rotation wont quickly change in relation to horizon the angle of attack of the outside of the wing can be changed by the inside of the wing won’t have any brakes on, but only the outside and the inside should be entirely released, yes? Yes, the inside should be released or the force on this control should be minimal and that would be more than enough but the impact here is really strong, and i hope the pilot came out of it fine aha and in the end I would like you to see that safety on this SIV course is not the greatest neither because someone is approaching him with a kayak, from the left side we can see it here The pilot is alive, he is moving and from the other side we have another guy in a kayak… now we can’t see that anymore but we could see it for a short while, just before So check where are you going to do your SIV Choose instructors who are well known Who have their own experience with those figures maybe I’ll just add don’t force yourselves into all the figures that you would love to do but try to look before you leap exactly to go into a spiral is less complicated then getting out of it and if we go into spiral dive we might run out of time for analysing “God dam it! I don’t know how to handle this s***t.” there are cases where the radio fails, or maybe it was poorly strapped and fell off during the spiral dive We can’t always rely on instructor’s advice because in case of any equipment failure we will be left alone to deal with it I would like to add because the movie refers to SIV course During such a SIV course there is many aspects affecting correct performance of those manoeuvres by the pilot In particular the delay that occurs between what the instructor says and pilot’s reaction the interia of the information is very large its only seem like when the instructor says something the pilot is automatically doing it the delay might take one or even two seconds which in case of basic acro figures or during some critical moments and situations in the air, has huge meaning the radio the SIV courses should be conducted with radio equipped with hands free set I think that SIV where we only have the radio is not the best solution, because in case of large G forces, and high speeds, we wont be bale to hear it I’ll joke around a bit…;) For the most part pilots are men, and as men we have very poor diversion of attention and sometimes, when we get scared of something, and we are focused on getting out of it we might even not register that information in our brains so that’s my little laugh I think that’s all in this episode. Thank you very much for watching, for being with us. Of course we wait for yours thumbs up…;) ayt we wont be begging for the likes click like if you like..;) Thank you for being with us commented for you Jarek J.X. Kolonko…;) and Jarek, so have a good night, as we are recording that very late when the kids are asleep Ciao, ciao.