narrow
The angle narrows as speed goes up
Faster
Generally speaking, a conical shock wave indicates a disturbance(in this case an aircraft) in the air travelling at a speed greater than that of the sound. But this only happens under ideal conditions. Real aircraft have very complex shapes and some part of the aircraft may experience shock wave earlier than the rest (over the bubble canopy or over the wing), so you usually don't get to find a perfect conical shock wave forming around an aircraft in real life.
a funnel? a conical flask?
Most common use is in older steam based machines in the use of a governor. Because the bobs would lift in response to a faster speed (because they were basicly a conical pendulum) it could be attached to some sort of regulator valve which could increase or decrease steam flow to keep a more constant speed. Other uses include some more unusual clocks and of course Rube Goldberg machines.
The angle narrows as speed goes up
Faster
Generally speaking, a conical shock wave indicates a disturbance(in this case an aircraft) in the air travelling at a speed greater than that of the sound. But this only happens under ideal conditions. Real aircraft have very complex shapes and some part of the aircraft may experience shock wave earlier than the rest (over the bubble canopy or over the wing), so you usually don't get to find a perfect conical shock wave forming around an aircraft in real life.
conical and dynafocal
L. R. Fowell has written: 'An exact theory of supersonic flow around a delta wing' -- subject(s): Conical flow, Supersonic flow, Delta wings
M. J. Larcombe has written: 'A prediction method for pressure distributions on compression surfaces of conical bodies at supersonic speeds'
G. T. Golesworthy has written: 'The performance of a conical convergent-divergent nozzle with area ratio 2.9 in external flow' -- subject(s): Supersonic nozzles
conical is an adjectiveso, for example: "It had a conical shape"
The size of the tubing gradually increases throughout the length of the instrument.
There is no meaning of conical flasks. They have uses.
A conical flask.
Today's dunce shall wear the conical cap for the rest of the day. Some volcanoes are conical in shape.