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AMT 112(theory of flight) > Fundamental Physical Quantities of a Flowing Gas > Flashcards

Fundamental Physical Quantities of a Flowing Gas Flashcards

1
Q

The science that deals with the flow of air

A

aerodynamics

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2
Q

language of aerodynamics involves

A

pressure, density, temperature and velocity

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3
Q

IS LIKE WATER.

A

FLOWING GAS

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4
Q

Quantities of a Flowing Gas

A

pressure
density
temperature
flow velocity and streamlines

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5
Q
  • the amount of matter in an object
A

MASS

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6
Q

– It can be defined as the rate of change of the object’s position with respect to a frame of reference and time.

A

VELOCITY

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7
Q

– Defined as the total space taken up by a flat surface or shape of an object

A

AREA

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8
Q

– The amount of space occupied by a three-dimensional object as measured in cubic units

A

VOLUME

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9
Q

IS THE FORCE PER UNIT AREA

A

PRESSURE

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10
Q

IT IS CAUSED BY THE GRAVITATIONAL ATTRACTION OF THE PLANET ON THE ATMOSPHERIC GASES ABOVE THE SURFACE.

A

PRESSURE

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11
Q

AIR PRESSURE IS COMMONLY MEASURED WITH A BAROMETER HENCE THE NAME

A

BAROMETRIC PRESSURE

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12
Q

pressure formula

A

P=N/m*2

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13
Q

DEFINED AS THE MASS OF AN OBJECT DIVIDED BY ITS VOLUME.

A

DENSITY

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14
Q

DESIGNATED WITH THE SYMBOL RHO

A

DENSITY

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15
Q

AIR DENSITY ALSO CHANGES WITH VARIATIONS IN

A

ATMOSPHERIC PRESSURE, TEMPERATURE, AND HUMIDITY.

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16
Q

density formula

A

D=Kg/m*3

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17
Q

IT CAN BE DEFINED AS THE MEASURE OF HOTNESS AND COLDNESS EXPRESSED IN TERMS OF SEVERAL SCALES

A

TEMPERATURE

18
Q

IF THE PARTICLE IS MOVING RAPIDLY, IT HAS A HIGHER ________ THAN, IF IT WERE MOVING SLOWLY.

A

KENITIC ENERGY

19
Q

UNITS USED in temp.

A

Celsius-c
Fahrenheit- F
kelvin-K
rankine-R

20
Q

EFFECTIVELY DESCRIBES EVERYTHING ABOUT THE MOTION OF A FLUID.

A

THE FLOW VELOCITY OF A FLUID

21
Q

is volume per unit of time

A

flow rate

22
Q

is distance per unit of time

A

flow velocity

23
Q

VELOCITY IS HIGH WHEN STREAMLINES

A

CROWD TOGETHER

24
Q

DEFINED AS THE PATH OF A PARTICLE IN FLUID RELATIVE TO A SOLID BODY PAST

A

STREAMLINES

25
Q

WHAT ARE THE SOURCES OF AERODYNAMIC FORCE?

A

Pressure Distribution

Shear Stress Distribution

26
Q

LENGTHS OF THE ARROWS DENOTE THE MAGNITUDE OF THE PRESSURE AT EACH LOCAL POINT ON THE SURFACE.

A

PRESSURE DISTRIBUTION

27
Q

FRICTIONAL EFFECT OF THE FLOW, RUBBING AGAINST THE SURFACE AS IT MOVES AROUND THE BODY.

A

SHEAR STRESS DISTRIBUTION

28
Q

IS DEFINED AS THE FORCE PER UNIT AREA ACTING TANGENTIALLY ON THE SURFACE DUE TO FRICTION, IT IS ALSO A POINT PROPERTY

A

SHEAR STRESS

29
Q

ALSO CALLED IDEAL GAS, A GAS THAT CONFORMS, IN PHYSICAL BEHAVIOUR, TO A PARTICULAR IDEALIZED RELATIONSHIP BETWEEN PRESSURE, VOLUME, AND TEMPERATURE CALLED IDEAL OR GENERAL, GAS LAW

A

PERFECT GAS

30
Q

IDEAL GAS CAN BE DERIVED FROM THE KINETIC THEORY OF GASES AND RELIES ON THE ASSUMPTION THAT

A
  1. THE GAS CONSIST OF A LARGE NUMBER OF MOLECULES,
  2. THE VOLUME OF THE MOLECULES IS NEGIBLY SMALL COMPARED WITH THE VOLUME OCCUPIED BY THE GAS.
  3. NO FORCES ACT ON THE MOLECULES EXCEPT DURING ELASTIC COLLISIONS OF NEGLIGIBLE DURATION.
31
Q

ALL GASES IN THE UNIVERSE ARE

A

REAL GASES

32
Q

gas that DOES NOT EXIST

A

IDEAL GAS OR PERFECT GAS

33
Q

ARE VITAL TO THE LANGUAGE OF ENGINEERING

A

PHYSICAL UNITS

34
Q

THERE 2 ARE TYPES OF UNIT EXPRESSION

A

SI UNIT
ENGLISH ENGINEERING SYSTEM

35
Q

INTERNATIONAL SYSTEM OF UNITS OR SYSTEM INTERNATIONALE D’ UNITS AND ALSO KNOWN AS METRIC SYSTEM

A

SI UNIT

36
Q

IT IS EASIER TO USE WHEN THERE ARE NO MEASURING TOOLS AROUND AS IT IS BASED ON THE COMMON LENGTHS OF THE BODY PARTS.

A

ENGLISH ENGINEERING SYSTEM

37
Q

DEFINED AS THE NUMBER OF CUBIC METERS OCCUPIED BY ONE KILOGRAM OF MATTER OR THE RATIO OF ITS VOLUME TO ITS MASS.

A

SPECIFIC VOLUME

38
Q

(NACA) meaning

A

NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS

39
Q

CREATED TO RESEARCH MORE ABOUT AERONAUTICS DESPITE THE COSTLY EXPENSES

A

NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS (NACA)

40
Q

NACA WAS FOUNDED ON

A

MARCH 3, 1915,

41
Q

WAS FORGED IN RESPONSE TO EARLY SOVIET SPACE ACHIEVEMENTS, NASA WAS BUILT ON THE NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS (NACA),

A

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION (NASA)

42
Q
A

AMT 112(theory of flight) (6 decks)

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