Recent content by Fwgunner

Thanks. Your screenshot doesnt include base gravity and air density. So i didnt touch them and ran a test. Result shows that base gravity and air density does not change with respect to difficulty

Altaïr Hey! Since my matlab rocket designing simulation is capable of designing fully reusable stage 1 rocket like falcon 9 and falcon heavy irl, i had decided to create starship but i was bored at some point and now i want to integrate whole system to realistic mod. However, i dont know about...

i keep results for each time interval and it shows that drag is unnecessarily high :( You got the point :D

Then the problem comes from my code. Although, i've checked it many times and couldnt find anything wrong. And about the math isnt mathing part, if you've never heard of it, its some kind of a slang i heard on internet

That make sense. And do you have any idea about the first question?

Normaly i do everything on pc but its closed now and this is an example of how i collected data. h=27km and v=582m/s. I collected the data and matlab did some magical polyfit curve fitting whatever stuff

I do it when temperature bar appears and it appears only when heating occurs and temperature stars with zero celsius degree.

i got you wrong though. You didnt say its constant

I did too many test and noted every velocity that caused temperature rise at that altitude and created an empirical formula. a1=1.6743e+04;b1=3.1148e+04;c1=3.5120e+03; a2=-1.6125e+03;b2=2.8305e+04;c2=1.5836e+03; a3=-2.9570e+03;b3=2.7943e+04;c3=2.3925e+03; a4=0;b4=2.6845e+04;c4=28.8564...

Altaïr Its me again. I have 2 questions. Question 1: When there is atmospheric drag, is there another force that effects rocket while engines on? I can simulate lift-off and re-entry separately with no atmospheric drag wight highly accurate results.. Also, I can simulate free fall and get highly...

I forgot to replace first sentence. It actually starts with "I'll explain the formula with an example. Lets say our rocket is...

Air density formula: ρ(h) = ρ0 * exp(-curve * h/h_max) - ρ0 * exp(-curve) And this is what i found experimentally: v=53,7541*ρ^(-0,2457) v: velocity ρ: air density What this empirical formula says that if your rocket is at a point where air density equals to ρ, rocket will heat. For instance...

how about calculating the velocity point which causes temperature rise from zero under a specific air density value? A function like this: F(rho)=v rho: air density v: velocity value that temperature rises after that point And by the way, does temperature rise depend on aerodynamics or is it...

Altaïr do we know how to calculate temperature? I want to upgrade my simulation to build a stage 1 rocket with re-entry skills and need to know how does temperature changes and what it does depend on. I think i could do experiments under different air density conditions with different rockets...

Altaïr hey its me again :D Do you know the current air density formula? My experiments show that our old friend rho=density*exp(-curve........) does not work right now