IL-2 Korea! F-80C

[00:00:04]All right, we got more Korea action.

[00:00:09]So, I was just informed that they captured some North Korean airplanes over here at Kimpo.

[00:00:19]And so we're going to take uh we're going to take our F80 from K50 over here and we're going to scoot over to Kimpo so we can test fly those captured airplanes.

[00:00:38]The weather looks pretty good.

[00:00:50]So, the F80 is an interesting airplane. Uh, there's lots of things we can check out on this flight, mostly to do with center of gravity stuff.

[00:01:07]Um, you know, I got my handbook here.

[00:01:14]>> [snorts] >> But we'll we'll look at it more in a second here when this loads up.

[00:01:23]Uh I got some notes.

[00:01:26]Now, I haven't dug too much into the, you know, into the data, but um I can I can point you to some sources, some resources in order to check some things out.

[00:01:45]I'll do a more in-depth analysis maybe in the future. Right now, I just want to fly all these airplanes and check them out.

[00:01:56]So, in the setup, okay, so 12,900 lb is correct without drop tanks, full ammunition, and full internal fuel.

[00:02:14][snorts] Uh, I'm not sure what I didn't want to do that bugger.

[00:02:24]What am I doing here? Cancel. Cancel.

[00:02:30]Liveries. Okay. What liveries do we have here? Paint schemes.

[00:02:37]That one. Spirit of hobo. That sounds like a good one. Let's do that.

[00:02:47]Sag and dragon. Panther queen.

[00:02:50]Beer City special Kansas tornado [snorts] bikini bomb.

[00:03:01]Let's go with this one for this mission.

[00:03:10]Okay. So, I want to show you some stuff here.

[00:03:19]>> [snorts] >> The takeoff center of gravity of this airplane with full ammunition load is near the forward position unless full drop tanks are carried.

[00:03:31]It is important that this condition be present at takeoff so that center of gravity with ammunition gone will not be too far a for landing.

[00:03:42]Warning, do not attempt to take off with full drop tanks unless at least onethird of the ammunition or the equivalent weight is carried in the forward ammunition boxes.

[00:03:59]Check setting at 70% flaps.

[00:04:02]Do not attempt takeoff without this flap setting will be greatly increased.

[00:04:10]Okay. So, it doesn't say in the in the C manual, but in this in the A manual, it says the CG's 24% 24% without drop tanks, 27% with drop tanks, and then it goes back from there as the ammunition is expended. And I don't know how far back it goes because I don't have a, you know, I don't have weight and balance manual for the airplane. But we're going to test it in the sim in the game and see what happens.

[00:04:47]So, we're going to take off without drop tanks. 125 mph is our takeoff speed.

[00:04:55]Our stalling speeds at 13,000 lbs is going to be 125 mph clean to about 110 mph gear and flaps down.

[00:05:13]Okay.

[00:05:17]Spins. This airplane has very good spin tendencies. I mean like it it doesn't spin easily.

[00:05:29][snorts] Full rudder full rudder and up elevator must be held in order to keep the airplane in the spin.

[00:05:39]It is not likely that a spin will occur unless the stick is held full back and full rudder is applied.

[00:05:49]Uh spin recovery is excellent. Recovery can be affected quarter to 3/4 of a turn.

[00:05:58]Opposite rudder neutral neutral elevator if with a normal CG full forward C or full forward elevator nose down elevator with an FCG.

[00:06:14]That's about it. So good good spin characteristics. We'll test that out.

[00:06:18]Never mind that stuff or that stuff.

[00:06:22]um climb chart.

[00:06:27]Yeah.

[00:06:28]So, in the condition we're taking off at 12,900 lb, 310 mph initially, reducing by 10 m an hour every 5,000 ft that we climb.

[00:06:46]Initial climb 4950T per minute.

[00:06:50]So, it doesn't climb very well. It's that's half of a MIG 15, right?

[00:06:55]Uh, so yeah, not not a great climb rate.

[00:07:01]Um, if we lose our engine, it'll run out of fuel or combat damage or whatever.

[00:07:09]Best glide is 190 clean and 140 with gear and flaps down.

[00:07:18]I think this is a this is a six to one ratio and I forget what this one is like 15 or something. Let's check it out. Let's do the math.

[00:07:30]Let's use this point here. 120 miles from 40,000 ft. So 120 miles is that many feet.

[00:07:44]15.8 8:1 glide ratio clean. And this one's about 40 miles from 35,000 ft.

[00:08:02]Yeah, that's 6:1. 6:1 and 15.8 glide ratios.

[00:08:08]You can test that in the game if you want to.

[00:08:14]Okay, that's about it for that. The other thing I wanted to show you was NASA's technical report server.

[00:08:23]Do a search for flying qualities locked and you'll get three reports on the P80.

[00:08:31]Stall characteristics, longitudinal stability and control, lateral and directional stability and control characteristics.

[00:08:44]And I haven't I haven't studied those reports yet, but you can look at them yourself, try to make sense out of it, and you can you can compare it to the game and see how the airplane flies.

[00:08:59]Right.

[00:09:02]Okay. Where are we? Let's go back to the game here.

[00:09:06]Okay. So, we're going to apply that and start.

[00:09:19]>> Okay, we went.

[00:09:20]>> Eagle, this is Falcon requesting takeoff clearance. Over. Falcon cleared for takeoff.

[00:09:28]Falcon group, takeoff.

[00:09:31]>> How do we look?

[00:09:38]Elevator rudder.

[00:09:50]It's pretty good.

[00:09:54]We got speed brakes on the bottom.

[00:10:03]Open the canopy.

[00:10:16]All right.

[00:10:19]Nice laminar flow wing.

[00:10:24]Looks good.

[00:10:26]Okay, we want 70% flaps.

[00:10:34]Okay, close enough.

[00:10:48]Okay, trims are neutral.

[00:10:53]Now we got tow brakes on this plane. I think got rudder pedals.

[00:11:00]This airplane has towe brakes.

[00:11:10]Okay.

[00:11:12]Hold the brakes.

[00:11:15]Full throttle. 125 miles an hour.

[00:11:19]Takeoff speed.

[00:11:21]Should be able to lift the nose wheel about 80.

[00:11:25]And then we want to climb at 310 initially.

[00:11:30]So, here we go. Brakes are holding.

[00:11:34]Brakes are holding. Okay, here we go.

[00:11:46]Okay, air speed's alive. Here we go.

[00:11:49]80 mph.

[00:11:57]125. Here we go. Oh, okay. Little bit of a jump into the air there.

[00:12:06]Lighting gear is going up.

[00:12:10]>> This is Falcon One. Airborne. Over.

[00:12:14]Falcon. Proceed with your mission.

[00:12:19]>> Proceed with your mission. What else am I going to do?

[00:12:22]Okay, get the flaps up before 200.

[00:12:25]Slowly retract the flaps.

[00:12:32]All right. Nose drops a little bit. Need some uptrim.

[00:12:37]Need a bit of nose up trim. A lot of uptrim. Oh my god. Okay. 80%.

[00:12:47]Okay. Okay, let's turn 250° or so and accelerate to 300 and 10 or 300 at least anyways for climbing.

[00:13:19]Okay, there's our 300.

[00:13:22]Let's climb.

[00:13:24]Oh, I got to trim the nose way down now.

[00:13:28]Whoops. Not too much.

[00:13:45]It looks like the best trim setting is going to be about 42% there.

[00:13:57]Initial climb that we're showing 4,000 ft a minute.

[00:14:07]So, yeah, not a great climbing airplane.

[00:14:33]I got to get through these clouds.

[00:14:40]There we go.

[00:14:50]I think we'll level off about 10,000 ft.

[00:15:01]Let's throttle back a little bit.

[00:15:11]Check our power.

[00:15:13]Power required for level flight here.

[00:15:20]350 or I think it's 375 is our optimum cruising speed at this altitude.

[00:15:31]about maybe 80 85 or 86% RPM.

[00:15:43]So, a little bit of a rudder kick here.

[00:15:44]Let's see what happens.

[00:15:51]Okay, that's pretty good.

[00:15:57]I like it. Feels good.

[00:16:08]Let's see how fast it'll go.

[00:16:16]See if I if we can trim properly here.

[00:16:23]Give enough trim authority.

[00:16:27]Heat.

[00:16:43]Heat.

[00:17:14]So, the elevator is pretty sensitive on this plane.

[00:17:20]Very sensitive, even with a forward center of gravity.

[00:17:27]Um, just wait till we get an out center of gravity.

[00:17:32]It's a It's a challenge for sure.

[00:17:54]All right, I'm going to do a turn here.

[00:17:56]Let's see how much elevator we can apply in this turn.

[00:18:05]Yeah, there's 5 G's.

[00:18:10]Not much elevator input.

[00:18:23]Okay, it's buffeting a little bit.

[00:18:31]I got about 50% input on my controller, which is about 25% input on the actual uh in the game because of the curve.

[00:18:48]Okay, we're down to 3 G's.

[00:18:58]How can I pull three? H I guess I can pull three G's.

[00:19:03]No stall yet.

[00:19:06]There it goes.

[00:19:09]So yeah, about uh about 50% input on the controller there and the plane will stall. Accelerated stall.

[00:19:39]Let's try stall and level flight.

[00:19:44]I'm going to trim the nose up a little bit.

[00:19:53]Okay, we're at idle.

[00:19:57]Stall should be 125 m an hour approximately.

[00:20:14]Here we go. Come on.

[00:20:29]Yeah, we're starting to get some buffeting at 130 there it looks like.

[00:20:40]120.

[00:20:42]So again about 50% input on the controller.

[00:20:47]Ailer runons are still working kind of.

[00:20:51]There it goes. Drops a wing.

[00:20:55]If I pull full back it just it will Yeah, it'll spin.

[00:21:04]Okay. This is bad.

[00:21:12]Okay. Pull out of the dive.

[00:21:36]Oh, we're going to fall down again.

[00:21:39]It's all right. I'm not pulling back.

[00:21:42]So, we're not going to stall.

[00:21:47]Remember, stall is angle of attack, right? Not just air speed.

[00:21:55]Okay, we tumbled our artificial horizon, so that's not working.

[00:22:04]Okay, so that's contrary to what the manual says, right? I didn't have to put any rudder in at all to get that thing to spin.

[00:22:15]And that was difficult to recover.

[00:22:24]didn't recover in half a turn just by neutralizing the uh the elevator and our center. So I I you know so there might be some spin install spin issues with this plane right at the moment now. I hate to see what happens if I expand the ammunition and move the CG even further back.

[00:23:03]Let's try it.

[00:23:09]So, yeah, the nose is going up. I got to trim it down.

[00:23:20]Uh, you can overheat the guns, so you know, no more than two or 3 second bursts.

[00:23:36]until we run out of ammunition.

[00:23:44]Now the nose is going up.

[00:23:52]Okay, we're out of ammo.

[00:23:55]So, my trim went from like what? 40% to 15% nose up or nose down, I should say.

[00:24:05]No, that's nose up trim.

[00:24:08]Negative is nose up. Positive is nose down.

[00:24:13]I don't know why.

[00:24:16]So, now let's repeat the turn test.

[00:24:22]And the elevator is going to be even more sensitive.

[00:24:26]A lot more sensitive. So, here we go. O 6G's. Look. Look at how much Look at how much input I have. Nothing.

[00:24:39]Pulling 6Gs.

[00:24:45]Okay, we're going to black out here. No, no, no. Don't black out.

[00:24:55]No blackout.

[00:25:04]So yeah, nowhere near nowhere near 50% input now. It's probably like 10%.

[00:25:12]It's not even 25% or it's not even 12%.

[00:25:16]It's like 10% input there.

[00:25:21]to reach the stall.

[00:25:24]Oh. Oh. Oh, that's bad.

[00:25:31]Okay, let's try it again in level flight.

[00:25:41]Get back on course.

[00:25:44]Catch our breath.

[00:25:52]Okay. A little bit of nose up trim.

[00:25:57]So, the elevator's more sensitive. The trim's more sensitive.

[00:26:02]It's very close to the neutral point uh of stability, which on this plane is 34%.

[00:26:17]So the CG right now I would guess is about 32%.

[00:26:21]It's almost perfectly neutral. Go back and watch my neutral point video.

[00:26:27]That's how it flies right now. Like it's it's very very neutral.

[00:26:50]Yeah, I doubt I doubt my controller input here is even 10% at the stall.

[00:27:03]So that's what happens when your center of gravity moves back when you lose all your ammo. Landing is going to be interesting.

[00:27:16]Um you're going to you're going to want to be very disciplined flying this airplane.

[00:27:27]Yeah. Yeah, look at my elevator input right now is like nothing. Zero at the stall here. It's like nothing.

[00:27:38]Yeah. Okay, that's enough.

[00:27:43]Okay, let's go back to cruise power.

[00:28:09]Trying to trim. trying to trim.

[00:28:20]Okay.

[00:28:26]So, landing this airplane in this condition is going to require you got to be on speed, on power, on glide angle, approach angle, everything has to be set and stabilized or else uh you're going to have a hell of a time trying to lighten this thing with a with a neutral center of gravity.

[00:28:59]Um so the idea is to set it up so that it basically it would land by itself.

[00:29:09]that's what you're that's what you're aiming for. So, not a lot of control inputs.

[00:29:15]Uh, you know, try to just try to set it up so it's on, like I said, it's on glide path, it's on speed, it's on power, everything is stable, and uh it's going to take some practice.

[00:29:31]I think I'm not even sure I can do it right now.

[00:29:36]Uh, it's going to be interesting. Put it that way. Let's see what happens.

[00:29:51]We should be almost there. We're not too far away. I don't think we got lots of fuel. Let's uh let's go faster.

[00:30:24]Heat. Heat.

[00:30:55]As soon as I break out of these clouds, we'll check the roll rate at high speed here.

[00:31:15]I might have to drop below the clouds.

[00:31:21]Let's put it in a bit of a dive.

[00:31:25]All right, here we go.

[00:31:34]Okay, we got to be getting close, I think.

[00:31:47]trimming.

[00:31:50]Let's do an iller run. We're all here at 500 miles an hour.

[00:31:56]Okay.

[00:32:01]Okay. You know what?

[00:32:04]That's ridiculous.

[00:32:12]There is no way this airplane rolls that fast at 500 miles an hour. There is no way.

[00:32:22]Uh the answer will be in those NASA reports.

[00:32:31]So I'll have to go check that out. But there is that's way too fast. Way too fast.

[00:33:03]No way.

[00:33:06]There's no way.

[00:33:10]Okay, where are we? Ah, okay.

[00:33:13]Kimpo should be right over here.

[00:33:17]Oh, we're flying right over it.

[00:33:20]Is that it? That might be it right there.

[00:33:25]Uh, no, that's soul.

[00:33:32]Pull up here a little bit. There it is.

[00:33:42]Okay, like I said, landing this thing is going to be interesting.

[00:33:48]I forget which way the wind is blowing, but uh it's not very strong. So, I'm going to call this my downwind leg.

[00:34:02]So, I'm thinking about 150 approach speed.

[00:34:09]Actually, the stall speed with flaps and gear down is about 110.

[00:34:14]So, let's say yeah, about 140 approach speed.

[00:34:19]What happens if I put the speed brakes down? Nose goes up.

[00:34:26]Nose goes up with speed brakes.

[00:34:37]Get some speed off here. I I don't remember what the gear speed is or any of that stuff.

[00:34:45]But under 200 should be good. We'll get it down to 200.

[00:34:51]Put the gear in the flaps down. We'll try to trim for 150.

[00:34:57]And I'm thinking, you know, no more than 1,000 ft a minute. 700 ft a minute would be a normal 3° glide slope, right? Or appro. Yeah.

[00:35:09]Glide slope.

[00:35:11]Okay. The gears going down. Brakes are retracting.

[00:35:18]Trimming the nose up.

[00:35:20]Okay. O, not too much.

[00:35:26]Oh, yeah. This is going to be This is going to be fun.

[00:35:32]Now, let's put the flaps down slowly because I don't know what's going to happen with the FCG.

[00:35:39]Okay. Okay, nose goes up quite a bit.

[00:35:43]Okay, so put the flaps down a little bit at a time and retrim.

[00:36:00]Okay, full flaps.

[00:36:04]We're way too slow. Oh my god, we're right at We're about to stall here.

[00:36:11]Okay, we want 140 or so.

[00:36:21]Okay, we got a crosswind from the right.

[00:36:24]Okay, there's our trim speed right there.

[00:36:29]About 17% on the trim.

[00:36:39]Now, how much power do we need?

[00:36:44]75%.

[00:36:54]Yeah, looks like about 7 75% maybe for a normal landing approach.

[00:37:02]Okay, let's make a gentle turn here. Very gentle. No more than 45°.

[00:37:13]Try to find our runway.

[00:37:19]Oh yeah, this is going to be this is going to be fun.

[00:37:31]We're going to have a crosswind from the left.

[00:37:43]Okay, that looks like a runway right there.

[00:37:49]Okay, let's go back to 75% on the power.

[00:38:01]All right.

[00:38:04]Oh, yeah. We got a massive crosswind from the left.

[00:38:08]This is Oh my goodness.

[00:38:13]Well, compared to the MIG 15, you can actually see over the gun site pretty good here. I can actually see the runway on a normal glide slope.

[00:38:34]I got about 500 ft a minute here now, which is Look at the crosswind. Oh my god, we're in trouble. This is not This is not going to go well. Maybe I'm going to put a bit of right rudder in right now just so I can compensate for it and try and Oh my goodness. This is brutal.

[00:39:28]Okay, let's try to hold it. Try to hold it. No crazy inputs at this point. Just very minor, very small. We'll try and land on the left side of the runway if we can.

[00:39:48]Okay, hold the power's coming off.

[00:39:53]Oh no.

[00:39:55]Oh no. Oh no.

[00:39:59]Oh, this is brutal.

[00:40:03]Oh no. This is bad.

[00:40:06]This is very bad.

[00:40:12]Oh, come on. Nice and easy. Got the power.

[00:40:20]Okay.

[00:40:22]Brakes.

[00:40:42]Okay, flaps are going up.

[00:40:52]That was scary. That was That was intense. That was That was very intense.

[00:41:04]All right, let's get off the runway here.

[00:41:09]This airplane has tow brakes.

[00:41:21]All right, I'm going to shut her down here.

[00:42:01]Okay. So, two things.

[00:42:06]The shift in the center of gravity seems to be accurate and the flight characteristics, you know, the associated flight characteristics seem to be good.

[00:42:17]Uh, aileron booster. Oh, I didn't try I didn't try turning the aileron booster off, but even with it on, I don't think the airplane's going to roll that fast.

[00:42:26]That was crazy.

[00:42:28]Um, like, as far as I know, the deflection doesn't change on the ailerons.

[00:42:34]It just means you can maintain full deflection up to a higher air speed.

[00:42:42]Um, they might be accurate. I don't know. I got to look at those NASA reports, [snorts] but uh right now that's suspect and the spin characteristics are suspect. The airplane spins too easily.

[00:42:56]Doesn't recover easily enough by all accounts.

[00:43:03]Anyway, I got to find these captured North Korean airplanes and and we got to test fly them.

[00:43:09]See you.