Mach cone
E90367
A Mach cone is the conical shock wave pattern produced by an object traveling through a medium at a speed faster than the speed of sound.
Aliases (1)
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
aerodynamic phenomenon
→
physical phenomenon → shock wave pattern → |
| dependsOn |
properties of the medium such as temperature and density
→
ratio of object speed to sound speed → |
| hasAlternativeName |
Mach wave cone
→
sonic cone → |
| hasBoundary |
shock wave
→
|
| hasCondition |
Mach number greater than 1
→
object speed exceeds local speed of sound → |
| hasEffect |
compression of the medium along the cone surface
→
formation of a sonic boom at ground level → sudden pressure change across the shock wave → |
| hasGeometricProperty |
half-angle equals arcsin(1/M)
→
|
| hasParameter |
Mach angle
→
Mach number of the source → speed of sound in the medium → speed of the moving object → |
| hasRegion |
exterior where medium is undisturbed until shock passes
→
interior where disturbances cannot propagate ahead of the object → |
| hasShape |
cone
→
|
| isDefinedAs |
the conical shock wave pattern produced by an object traveling faster than the speed of sound in a medium
→
|
| isDescribedIn |
aerodynamics textbooks
→
compressible fluid dynamics → |
| isNamedAfter |
Ernst Mach
→
|
| isObservedFrom |
a stationary frame relative to the medium
→
|
| isProducedBy |
explosive blasts
→
reentry vehicles → supersonic aircraft → supersonic bullets → supersonic projectiles → |
| isRelatedTo |
Mach number
→
acoustics → aerodynamics → ballistics → compressible flow → explosions → projectiles → shock wave → sonic boom → supersonic aircraft → supersonic flow → |
| isUsedToExplain |
directionality of sonic booms
→
shock patterns around supersonic bodies → |
| occursInMedium |
air
→
any compressible fluid → water → |
| occursWhen |
an object moves at supersonic speed
→
|
Referenced by (2)
| Subject (surface form when different) | Predicate |
|---|---|
|
Mach cone
("Mach wave cone")
→
|
hasAlternativeName |
|
Ernst Mach
→
|
hasEponym |