Saaru Lindestøkke
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 Dec 20 awarded Excavator Dec 20 revised Which ball touches the ground first? Changed last occurrence of "ball 1" into "ball 2". Removed some additional character to surpass the edit limit. Dec 20 suggested approved edit on Which ball touches the ground first? Dec 7 awarded Popular Question Dec 1 accepted Difference resultant aerodynamics force on an airfoil and a flat plate Dec 1 awarded Popular Question Jul 20 awarded Popular Question Jan 18 awarded Curious Jul 9 revised Metronome synchronisation applied to swings deleted 2 characters in body Nov 4 comment Difference resultant aerodynamics force on an airfoil and a flat plate Meaning that the $R$ force can only be decomposed in the $L$ and $D$ force if the $A$ force is neglected? Nov 4 awarded Custodian Nov 4 reviewed Approve Difference resultant aerodynamics force on an airfoil and a flat plate Nov 4 asked Difference resultant aerodynamics force on an airfoil and a flat plate Sep 3 comment What is the drag coefficient of an open wedge? this may not be easy, but it will have been done - unfortunately I don't have a reference to hand That's the problem exactly. I'm sure there must be something on it but no I failed to find any references as well. I only found something in the Fluid Dynamic Drag book of Hoerner on the open wedge shown in the first image, but the flow coming from the right. Aug 22 awarded Tumbleweed Aug 15 asked What is the drag coefficient of an open wedge? Apr 23 comment In terms of the Doppler effect, what happens when the source is moving faster than the wave? From the supersonic image it seems that an observer standing just below the line of motion would first hear the most recent sound waves and after that the less recent waves. Does that mean he would hear the sound in reverse? Apr 12 comment Effective angle of attack of a wing In my question I assume a yaw angle of 0. My point is that when you have a wing with dihedral and you pitch it up, the angle of attack on the wing is different than it would be without dihedral. Apr 12 accepted Effective angle of attack of a wing Apr 12 answered Effective angle of attack of a wing