Recent content by Calsir

Hi. Space Mission Analysis and Design by James Wertz describes basically how to design a satellite mission. Some parts might be legacy of the cold war, like the provision on how to build a communication satellite able to function for a month in a "radiation enhanced" (i.e. nuked to hell) Van...

The problem was never solved analytically. It does not mean that it was not understood.

Hello Bob. The first requirement is a side effect of the second: instead of focussing on the "approximately stright-line", you should focus on how long you want the transfer time to be. Define the transfer time, you can then compute the Sun-centered transfer orbit that will bring you from...

It should show fewer and stronger frequency peaks on regular waves compared to non-regular waves: see the differences between the blue and the violet plots. Try to plot it in a semilogY or in a loglog plot, it usually makes more sense as log plots separate peaks in much a clearer way. Your...

A function that describes your wave form is this one: \frac{1}{2}\biggl(SquareWave \biggl(\frac{t}{2T} \biggr) + 1\biggr)sin(2 \pi t / T)) Afaik, the function you have there is not analytical, but it is harmonic, therefore I tried to run it through wolfram alpha to get a fourier series, but it...

If you know the orbital elements, then you know the shape of your orbit and where you are upon it. The direction of your velocity is unit vector which is tangent to your orbit in your position. Such a tangent vector can be calculated analitically for Keplerian orbits. Edit: look at the last...

Wishbone, thanks for the offer. I have read your code for the computation of optimal angles of attack for each given need: in PrecessionMFD.cpp, lines 3461-3506 and the related structs and functions. If I understand correctly you perform your calculations by considering the airfoil with the...

New Release I released a new version of wind tunnel (1.0). It is basically a complete redesign, with improved stability and better handling of configuration / scenario errors.

This addon allows the gathering of the aerodynamic coefficients of orbiter vessels at various Mach numbers and angles of attack. It provides the results in a .csv file for further manipulation. It is not intended as a design tool, as it will not calculate the lift and drag coefficients of a...

At last a tampon joke, even if only hinted in the movie...

Beautiful :tiphat:, and hail the :probe:.

Oups, I read what is the MOST likely... This is why I went for the phaser... The least likely? Transporter and Warp... Merry Xmas / Happy holidays :)

It is also the way by which agentgonzo reaches his insane velocities (10km/s +) in high earth atmosphere for his KSC-ascension flight. In this case, the downward force is given by aerodynamic lift (which is more or less free), rather than thrust.

1440x900 here again :).

From what I see, the vessel you are testing creates no lift at these AoAs.