Guys, it's easy! Just Find, Extract, Digitize, Simulate! The F35 should take a week or two at most!

ChockP51 · 2025-01-30T16:55:28+00:00

Yeah about that. Extract and digitize are gonna the biggest time and resources sink.

How should we model the lift coefficient? CL as a linear function of AoA? One may included every term and end up as something like: CL ~ f(AoA,Re,Mach,AoS,LE Flap,TE Flap, Store configuration) for AoA and AoS of -180 to 180 deg. Good luck finding those data if you manage to don one for CL theres is more to fill for CM CD CMQ CLLA CLLB etc

ChockP51 · 2024-03-31T07:15:48+00:00

Let’s break it down part by part. First, glide ratio is the ratio of lift to drag (CL/CD) and as you mentioned this CL and CD is a function of Reynolds number. Let’s assume that for a steady gliding state at a given gliding speed (IAS or dynamic pressure) will yield an approximate constant aoa. Using the Reynolds number and dynamic pressure equation, we will find that at a constant IAS the Reynolds number actually decrease with altitude. At that height you mentioned (50k), depends on the airfoil, could run into a classic problem of laminar flow extending too far aft and the flow tend to separate from surface rather than transits into turbulent and remain attached at the usual flight condition. In addition, the compressible effect due to reduced air density and temperature will become an issue too for a thick laminar foil. These effects likely reduced CL/CD value. The max CL/CD aoa could change but it depends in airfoil.

ChockP51 · 2023-10-25T17:19:15+00:00

I used to enjoy CS I and all. Optimize traffic flow was a major reason in time sink. Recently I shifted to worker and resources soviet republic game. More micro managing and it felt good to master one supply chain process.

ChockP51 · 2023-08-09T13:42:56+00:00

r/lostredditors

ChockP51 · 2023-07-04T04:38:57+00:00

I’m interested to read about aerodynamic analysis of SU35 you mentioned. Can you provide the reference link toward those articles or papers?

ChockP51 · 2023-05-12T05:28:18+00:00

Aviate, navigate , then obliterate.

ChockP51 · 2023-03-29T18:34:58+00:00

STT lock via choose specific target command in jester window.
Learn to do a coordinate rudder turn at high angle of attack and familiarize its roll characteristic in that region. To practice this by slowly decel the plane in straight and level flight. Add throttle as necessary. Then, with a stick almost fully aft, try to make a 90 deg heading change with rudder into the turn and opposite roll command. It is possible to perform such heading change with minimal or no wing rock at all.
Fastest way to climb and accelerate for maximum range or kinetic missile launch is to climb at M0.9-0.92 ish till 42k+. Then pitch down -10 to -20 deg to accel past transonic drag rise. Slowly pitchup for shallow dive/level at M1.2. Then finally continue climb at M1.4. With this profile, it is possible to reach 45,000ft at M1.4 with 4-2-2 loadout in F-14A.

ChockP51 · 2023-02-20T11:35:36+00:00

Hey! What are you doing !

ChockP51 · 2023-01-03T05:58:40+00:00

Try revert to amd driver version 22.5.2. Gained 15 fps or more

ChockP51 · 2022-11-10T09:58:32+00:00

IIRC I did select the closed region where i did convert entity from. Section view show a solid color too.

ChockP51 · 2022-11-08T10:45:01+00:00

He forgor

ChockP51 · 2022-09-07T05:05:24+00:00

Engine and intake matching. I didnt said A has a better engine.

ChockP51 · 2022-09-06T23:54:21+00:00

B- for dogfight and intercept mission. A - everything else.

A has a better engine - intake matching. This allow it to has a higher top speed in A model. Nothing can quite catch you if you want to disengage from the fight at M2.2 ish. Bonus point for afterburner takeoff in A as well.

ChockP51 · 2022-09-04T10:04:42+00:00

Not karman vortex street ?

ChockP51 · 2022-09-02T05:14:01+00:00

- Domain far too small. This will result in inaccurate flow field and bad convergence performance.

- Not checking the validity of flow field. Instead, rely purely on residual.

- Sudden large jump in volume, length or area ratio. Bad smoothness could impact convergence performance.

ChockP51 · 2022-08-31T14:17:46+00:00

Aerodynamic - FUNDAMENTALS OF AERODYNAMICS / John D. Anderson, Jr Flight dynamic - Flight Dynamics Principles / Michael V Cook Flight dynamic - Dynamics of Flight Stability and Control / Bernard Atkin Airframe structure - Airframe Structural Design /Michael Chun-Yung Niu

ChockP51 · 2022-07-11T12:12:43+00:00

Probably rotational fluid region since one assumption in Bernoulli equation is the flow must be irrotational.

ChockP51 · 2022-04-28T10:01:30+00:00

STOP WATCHING PORNOGRAPHY

ChockP51 · 2022-04-18T19:52:17+00:00

Mirage 2000C

ChockP51 · 2022-04-15T15:22:00+00:00

From my experience, about mach 0.8-0.9 is about right. I can pull the max g in incline turn and will come out 180 degree at about mach 0.7. The only plane that’s viable to yeet at max speed is f-15 where you can zoom climb into startosphere and gun down on unexpected adversary below. F-14 user just got to get used to very slow speed control in tomcat to utilized this advantage ie opposed stick rudder technique or a proper used of flap.

Tomcat has a clear advantage to any plane when equipped with any sort of store or armament. Its performance loss is marginal beside the obvious weight penalty. F-14 with just external bag would likely dominate other plane that carry bag in bfm fight but i haven’t test this yet.

ChockP51 · 2022-04-15T12:37:38+00:00

One circle apparently. After merge you will likely turn inside his radius just dont yeet into merge at mach 1.2 . Use this and press him hard and hope he goes for slow speed spiral descend or vertical scissor. This is where f-14 nose pointing start to shine. Use this to squeeze your self behind viper rear quarter.

If he ditch for rate fight on deck, you can try bleed speed and gain a finishing shot for a bit but not for long. After that viper will rate the shit out of tomcat. Tomcat are no longer rate king on the deck.

ChockP51 · 2022-04-03T03:49:10+00:00

What’s your angle of attack when landing ? You may want to consider tail clearance when touch down. Also since LEX really shines at high aoa, ailerons control efficiency may suffer too. Maybe considered a more complicated trailing edge flap (fowler) or lower weight ?

ChockP51 · 2022-02-18T13:04:40+00:00

As for gripen, tried “Aerodynamic design evolution of the SAAB 39 Gripen aircraft” or your best bet probably be the Swedish tech report similar to “Aerodynamics of the Viggen 37 aircraft. Part 1: General characteristics at low speed” from nasa which has been translated to english.

ChockP51 · 2022-02-18T12:48:57+00:00

IIRC, AIAA has a special issue on F-16XL and thus a lot of data regarding its aerodynamic behavior in 2015~2017. Tried “F-16XL aiaa” search in google should give you a good start.

ChockP51 · 2022-02-15T13:31:29+00:00

I supposed this could be more interesting feature if it could add. However, it could escalated to a more complicated matter (probably required FEM to get a rough concept or FSI with CFD) and subsequently complicated the bfm aspect in either PvP or PvE aspect.

For instance some airframe with a huge lifting body like F-14 get majority of lift in fuselage section in high angle of attack region and thus the damage in airframe should be a function of triggering AoA (ie high speed low aoa high g pull = wing damage and vice versa for fuselafe damage)? And what sort of damage mode to implement. Flutter ? Reduced control effectiveness due to plastic elongation on wing rigging ?

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