AAWSAP DIRD, Detection and High-Resolution Tracking of Vehicles at Hypersonic Velocities, November 2010

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UNCLASSIFIED/fFOR. QFFIEl.t.L: Uii QD:I! X
3
T02 = 7.396 x 10 K
~ := as in(~ 1) = 11.707-deg
This is the Mach angle for a blunt-nosed object.
E. Compute the Peak Wa\€length of Emitted Infrared Energy
1. Using Wien's Displacement Law, compute the peak wa\€length of emitted radiation.
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b := 2.8977685· JO - •m- K
3
"-max= 2.295 x 10 ·nm
"-max = 2.295-micron
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'' max= 2.295 x 10
m
2. Using Planck's Law, compute the distribution of emitted energy with wa\€length.
8·1t·h·c (
. I.
]
u(1c, T) := -- ·
Spectral Energy Density for a Black Body
-;.,5
~
Radiator in energy per unit volume per unit
11.·k· T
e
- I
'-N8.velength.
UNCLASSIFIED//EQA: QlililEl.t.L: W&&: O,.L'l
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