95 reputation
8
bio website
location Left of Warsaw, Right of London.
age
visits member for 1 year, 6 months
seen 14 hours ago

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 suggested edit on 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
Mar
27
comment Metronome synchronisation applied to swings
@annav Thanks for the links, but these motions are not really coupled in the same way as the metronomes are. Is that a big difference?
Mar
26
asked Metronome synchronisation applied to swings
Mar
9
revised Effective angle of attack of a wing
added images to show how I see this problem
Mar
8
accepted Force in tetrahedron edges
Feb
28
asked Effective angle of attack of a wing
Feb
28
awarded  Citizen Patrol
Feb
20
awarded  Scholar
Feb
20
accepted Necessary air pressure in flexible vessel to lift a certain mass
Nov
6
comment Force in tetrahedron edges
I've added a calculation for the force in the three lower beams.