Density Flashcards

1
Q

Relative Density

A

Todays density vs ISA as a percentage

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2
Q

Density Altitude

A

Pressure Alt corrected for temp variation from ISA

1 degree difference from ISA = 120 ft

PA + (120 x ISA Dev)

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3
Q

Density (kg/m3) in relation to Pressure/Temp/Humidty

A

Inc Pressure Inc Density
Inc Temp Dec Density
Inc Humidity Dec Density

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4
Q

Density and A/C performance

A

Density decreases A/C performance

T/O distance/climb and LD distance

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5
Q

Temp on density

A

Increase temp air molecules move more increasing volume therefore density of air decreases

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6
Q

Pressure on density

A

High pressure increase volume decreases for air molecules and therefore density increases

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7
Q

Humidity on density

A

Water molecules make air lighter so therefore air becomes less dense

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8
Q

What has the greatest effect on density

A

Pressure

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9
Q

Density at key altitudes

A

MSL - 1.225kg/m3
10,000ft - 0.903kg/m3
22,000ft - 0.609kg/m3
40,000ft - 0.302kg/m3

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