4k views

### How long does Max-Q last?

When watching rocket launches, the commentary or status reports often mention that the vehicle is "passing through Max-Q" - how long does the "passing" take? Is the event instantaneous or is there ...
1k views

### Why is that max-Q doesn't occur in transonic regime?

Is there any reason why the maximum dynamic pressure should not occur in the transonic regime. It is clear from this answer that the max-Q for various rockets occur outside the transonic region Do ...
2k views

### What percentage of overall fuel does a rocket burn up to get to max-q?

I know that max-q normally occurs around 11-15km (based on observations of watching falcon 9 launches and this). Furthermore, I know that the fuel usage for each rocket would vary a lot (which I ...
4k views

### How can I estimate the Coefficient of Drag on a Saturn V rocket, a simulator or some data would be pretty awesome

I'm trying to get some information on this and its proving difficult as the information is usually acquired experimentally from what I've found. A single number at a specific altitude and speed would ...
597 views

### What is the maximum pressure a rocket body can experience?

Given that the alloys (typically made of aluminum or titanium) are optimized for being as light and as durable as possible, what is the maximum pressure a rocket like the Falcon 9 would be designed to ...
303 views

### Where does a Falcon-9 get the hottest during launch, and how hot does it get? (aerodynamic heating)

We know there is a Max-Q point1 during a launch, have an approximate altitude, equations for it's pressure value and suspect it lies very near the apex of a rocket's nose. But is there a "Max-T&...
155 views

### Why the max dynamic pressure might not happen at maximum drag instant?

I understand that is that when a rocket accelerates the drag force grows dramatically since the force is related to velocity squared. But, at the same time, the density is decreasing, so the force is ...
104 views

### How throttle changes affect calculations of thrust?

So, for constant throttle setting equation to calculate thrust looks like $\ F = \dot{m}_\mathrm e V_\mathrm e + (p_\mathrm e - p_0) A_\mathrm e$ But if we are looking at flightclub.io simulation, ...