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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Mach cone canonical | 1 |
| Mach wave cone | 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 cone
ⓘ
surface form:
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)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Mach wave cone