Dials

Every field of the airframe, the flare, the chaff, the flight, the air and the look, with its default.

Every dial is a physical quantity. The defaults are the default_* functions'. The program's are in programs.

`CountermeasuresAirframe`

dispensers: each { at, direction? }. at is a position in the group's frame, or a node of the model. direction is which way it throws, down by default. The default is the docs' fighter's two, measured off its model under its tail: [∓1, -0.57, 5].

`Flare`

The default, FLARE.mju7, is an MJU-7 class flare.

field	default	what it is
`crossSectionM`	`[0.0226, 0.0498]`	The grain's two short sides: the 1 × 2 inch case less its walls.
`massKg`	`0.253`	The composition's mass. Its length follows, about 12 cm.
`densityKgPerM3`	`1906`	MTV1's theoretical density, from its ingredients'.
`burnRateMPerS`	`3.86e-3`	How fast each face recedes: MTV1's measured rate.
`bandEnergyJPerKgSr`	`179e3`	What it radiates in its band, per kilogram, per steradian: MTV1's, measured.
`bandM`	`[1.8e-6, 2.6e-6]`	The band that is measured in.
`temperatureK`	`2100`	The flame's temperature: an MTV flame's 2000 to 2200 K.
`emissivity`	`0.95`	The flame's, as a graybody.
`dragCoefficient`	`1.05`	A tumbling block's, on its mean projected area: a cube's.
`ejectionMPerS`	`30.3`	How fast the cartridge throws it: 99.5 ft/s, measured.
`halfLightMPerS`	`150`	The speed through the air that halves the light at the grain. An estimate.
`glowTimeS`	`0.05`	How long the swept products glow: the trail's e-fold time. An estimate.
`trailShare`	`0.5`	The share of the light swept off that the trail gives. An estimate.
`pressureExponent`	`0.094`	How the burn rate goes with the pressure, r ∝ pⁿ: MTV's, measured.
`ignitionDelayS`	`0.1`	How long after it leaves the grain lights. An estimate.
`smokeYield`	`1.13`	The smoke a kilogram burnt leaves: MgO, MgF₂ and carbon, from the mixture.
`smokeExtinctionM2PerKg`	`2000`	What the smoke stops, per kilogram. An estimate.
`smokeAlbedo`	`0.8`	The share of that it scatters. An estimate.
`smokeAsymmetry`	`0.6`	How much it scatters on forward, Henyey and Greenstein's g. An estimate.

`Chaff`

The default, CHAFF.rr178, is an RR-178 class cartridge.

field	default	what it is
`dipoleLengthM`	`88_775`	All its dipoles, end to end: the RR-178's (Dalkıran, Bilkent).
`dipoleDiameterM`	`25.4e-6`	One dipole's diameter, its coating included: a mil.
`cutLengthM`	`0.024`	A typical dipole: the geometric mean of the 2 to 20 GHz cuts, 7.5 to 75 mm.
`densityKgPerM3`	`2600`	Aluminised glass: glass's 2540 and aluminium's 2700.
`reflectance`	`0.91`	The share of the light aluminium reflects.
`ejectionMPerS`	`30.3`	How fast the cartridge throws it: the flare's. An estimate.
`bloomTimeS`	`0.2`	How long the airstream takes to tear it into a cloud (US patent 4,653,403).
`bloomWidthM`	`1.75`	The cloud then, across its path: the patent's 1.5 to 2 m, read as ±2σ.
`bloomLengthM`	`11`	And along it: the patent's 10 to 12 m, read as ±2σ.
`bloomAtMPerS`	`244`	The airspeed that length is at, 800 ft/s: it goes with the speed it is thrown at.

Reading the patent's sizes as ±2σ of a Gaussian is an estimate.

`CountermeasuresFlight`

field	default	what it is
`airspeedMPerS`	`250`	True airspeed: what the flares start from.
`angleOfAttackRad`	`0`	Between the forward axis and the oncoming air, nose up.
`sideslipRad`	`0`	How far the oncoming air comes from one side, from the right.

`CountermeasuresAir`

field	default	what it is
`altitudeM`	`1000`	Metres above sea level: the air's density for the drag, and the haze.
`visibilityM`	`23_000`	The meteorological range: 23 km is the clear day of the standard rural haze.
`turbulenceM2PerS3`	`1e-3`	Its dissipation rate, which spreads the smoke: a mixed layer's top. An estimate.

`CountermeasuresLook`

field	default	what it is
`exposure`	`exposure_ev100(8)`	The number one cd/m² is drawn as.
`ageYears`	`25`	The observer's age: the eye scatters more with it.
`pigmentation`	`0.5`	The eyes: 0 very dark, 0.5 brown, 1 blue or green.
`sunDirection`	`[0.4, 0.8, 0.3]`	Towards the sun, in world space: for the smoke.
`sunColor`, `sunIntensity`	`[1, 0.96, 0.9]`, `0`	The sun's light on the smoke, in the scene's units, as the contrails'.
`skyColor`, `skyIntensity`	`[0.55, 0.68, 0.9]`, `0`	The sky's, the same from everywhere. None by default: night.

CountermeasuresAirframeCopy Anchor Link

FlareCopy Anchor Link

ChaffCopy Anchor Link

CountermeasuresFlightCopy Anchor Link

CountermeasuresAirCopy Anchor Link