WEIGHTS, MEASUREMENTS AND CONVERSION FACTORS Flashcards
MEASUREMENT SYSTEMS
WHAT ARE THE THREE SYSTEMS OF MEASUREMENT?
- BRITISH IMPERIAL UNITS
- UNITED STATES CUSTOMARY UNITS
- SI UNITS
MEASUREMENT SYSTEMS
WHAT DOES SI STAND FOR?
INTERNATIONAL SYSTEM OF UNITS
MEASUREMENT SYSTEMS
WHAT IS SI?
THE INTERNATIONAL DECIMAL SYSTEM OF WEIGHTS AND MEASURES
DERIVED FROM AND EXTENDING THE METRIC SYSTEM OF UNITS
SI UNITS
LENGTH
L,d,s
METRE
m
SI UNITS
MASS
m
KILOGRAM
kg
SI UNITS
TIME
t
SECOND
s
SI UNITS
SPEED, VELOCITY
v
METRE PER SECOND
m/s
SI UNITS
ACCELERATION
a
METRE PER SECOND SQUARED
m/s²
SI UNITS
TEMPERATURE
T
DEGREE CELCIUS
°C
SI UNITS
THERMODYNAMIC TEMPERATURE
T
KELVIN
K
SI UNITS
AREA
A
SQUARE METRE
m²
SI UNITS
VOLUME
V
CUBIC METRE
m³
SI UNITS
DENSITY
p(RHO)
KILOGRAM PER CUBIC METRE
kg/m³
METRIC SI PREFIXES
YOTTA
Y
1 000 000 000 000 000 000 000 000
10²⁴
YOTTAWATT
AT 24 I WENT ON A YACHT
METRIC SI PREFIXES
ZETTA
Z
1 000 000 000 000 000 000 000
10²¹
ZETTAWATT
AT 21 I ZETTLED WITH DOUG
METRIC SI PREFIXES
EXA
E
1 000 000 000 000 000 000
10¹⁸
EXAWATT
AT 18 I HAD MY FIRST EX
METRIC SI PREFIXES
PETA
P
1 000 000 000 000 000
10¹⁵
PETAWATT
AT 15 I PET A LLAMA
METRIC SI PREFIXES
TERA
T
1 000 000 000 000
10¹²
TERAWATT
AT 12 I WAS A TERROR
METRIC SI PREFIXES
GIGA
G
1 000 000 000
10⁹
GIGAWATT
AT 9 I GIGGLED A LOT
METRIC SI PREFIXES
MEGA
M
1 000 000
10⁶
MEGAWATT
AT 6 I WAS GETTING MEGA
METRIC SI PREFIXES
KILO
k
1 000
10³
KILOWATT
METRIC SI PREFIXES
HECTO
h
100
10²
HECTOWATT
METRIC SI PREFIXES
DEKA
da
10
10¹
DEKAWATT
METRIC SI PREFIXES
DECI
d
0.1
10-¹
DECIWATT
METRIC SI PREFIXES
CENTI
c
0.01
10-²
CENTIWATT
METRIC SI PREFIXES
MILLI
m
0.001
10-³
MILLIWATT
METRIC SI PREFIXES
MICRO
µ
0.000 001
10-⁶
MICROWATT
METRIC SI PREFIXES
NANO
n
0.000 000 001
10-⁹
NANOWATT
METRIC SI PREFIXES
PICO
p
0.000 000 000 001
10-¹²
PICOWATT
METRIC SI PREFIXES
FEMTO
f
0.000 000 000 000 001
10-¹⁵
FEMTOWATT
METRIC SI PREFIXES
ATTO
a
0.000 000 000 000 000 001
10-¹⁸
ATTOWATT
METRIC SI PREFIXES
ZEPTO
z
0.000 000 000 000 000 000 001
10-²¹
ZEPTOWATT
METRIC SI PREFIXES
YOCTO
y
0.000 000 000 000 000 000 000 001
10-²⁴
YOCTOWATT
COMMON ENGINEERING CONVERSIONS - LENGTH
INCH - MM
MULTIPLY BY 25.4MM
1 INCH = 25.4 MM
COMMON ENGINEERING CONVERSIONS - LENGTH
FOOT - INCH
MULTIPLY BY 12 INCH
1 FOOT = 12 INCHES
COMMON ENGINEERING CONVERSIONS - LENGTH
METRE - CM
MULTIPLY BY 100
1 METRE = 100 CM
COMMON ENGINEERING CONVERSIONS - LENGTH
METRE - FT
MULTIPLY BY 3.2808399
1 METRE = 3.2808399 FT
COMMON ENGINEERING CONVERSIONS - VOLUME
US GAL - LITRE
MULTIPLY BY 3.785411784
1 US GAL = 3.785411784 L
COMMON ENGINEERING CONVERSIONS - VOLUME
US GAL - US PINT
MULTIPLY BY 8
1 US GAL = 8 US PINTS
COMMON ENGINEERING CONVERSIONS - VOLUME
IMP GAL - LITER
MULTIPLY BY 4.546
1 IMP GAL = 4.546 L
COMMON ENGINEERING CONVERSIONS - VOLUME
IMP GAL - IMP PINTS
MULTIPLY BY 8
1 IMP GAL - 8 IMP PINTS
COMMON ENGINEERING CONVERSIONS - VOLUME
LITRE - C/M³
MULTIPLY BY 1000
1 LITRE = 1000 C/M³
COMMON ENGINEERING CONVERSIONS - VOLUME
LITRE - IMP GAL
DIVIDE BY 4.546
1 LITRE = 0.219969 IMP GAL
COMMON ENGINEERING CONVERSIONS - VOLUME
LITRE - US GAL
DIVIDE BY 3.785
1 LITRE = 0.2642 US GAL
COMMON ENGINEERING CONVERSIONS - LENGTH
METRE - INCH
MULTIPLY BY 39.37
1 METRE = 39.37 INCH
COMMON ENGINEERING CONVERSION - FORCE AND WEIGHT
NEWTON - LB
DIVIDE BY 4.4482
1 NEWTON = 0.22481
COMMON ENGINEERING CONVERSION - FORCE AND WEIGHT
LB - NEWTON
MULTIPLY BY 4.44822
1 LB = 4.44822 N
COMMON ENGINEERING CONVERSION - FORCE AND WEIGHT
KILOGRAM - POUND
MULTIPLY BY 2.2046
1 KILO = 2.2046 LB
COMMON ENGINEERING CONVERSION - FORCE AND WEIGHT
KILOGRAM - GRAM
MULTIPLY BY 1000
1 KILO = 1000 g
COMMON ENGINEERING CONVERSION - FORCE AND WEIGHT
POUND - KILOGRAM
DIVIDE BY 2.2046
1LB = 0.4536
COMMON ENGINEERING CONVERSION - FORCE AND WEIGHT
POUND - OUNCE
MULTIPLY BY 16
1 POUND = 16 OUNCES
COMMON ENGINEERING CONVERSION - POWER
HORSEPOWER - WATT
MULTIPLY BY 746 W
1 HP = 746 W
COMMON ENGINEERING CONVERSION - POWER
HORSEPOWER - ft.lb/sec
MULTIPLY BY 550
1 HP = 550ft.lb/sec
COMMON ENGINEERING CONVERSION - POWER
BRITISH THERMAL UNIT PER HOUR - WATT
DIVIDE BY 3.41214
1 BTU/HR = 0.293 W
COMMON ENGINEERING CONVERSION - PRESSURE
ATMOSPHERE - PASCAL
MULTIPLY BY 101325
1 ATM = 101325 Pa
COMMON ENGINEERING CONVERSION - PRESSURE
ATMOSPHERE - inHg
MULTIPLY BY 29.92
1 ATM = 29.92inHg
COMMON ENGINEERING CONVERSION - PRESSURE
ATMOSPHERE - mmHg
MULTIPLY BY 760
1 ATM = 760 mmHg
COMMON ENGINEERING CONVERSION - PRESSURE
PASCAL - NEWTON METRE SQUARE
MULTIPLY BY 1
1 Pa = 1 N/m²
COMMON ENGINEERING CONVERSION - PRESSURE
PASCAL - lb/in²
DIVIDE BY 6894.76
1 PASCAL = 0.00014504 lb/in²
COMMON ENGINEERING CONVERSION - PRESSURE
BAR - Pa
MULTIPLY BY 100 000
1 BAR = 100 000 Pa
COMMON ENGINEERING CONVERSION - PRESSURE
BAR - lb/in²
MULTIPLY BY 14.6
1 BAR = 14.6 lb/in²
COMMON ENGINEERING CONVERSION - PRESSURE
PSI - Pa
MULTIPLY BY 6894.75
1 PSI = 6894.75 Pa
COMMON ENGINEERING CONVERSION - PRESSURE
PSI - inHg
MULTIPLY BY 2.036
1 PSI = 2.036inHg
COMMON ENGINEERING CONVERSION - TEMPERATURE
°F - °C
°C = 5/3 (°F - 32)
COMMON ENGINEERING CONVERSION - TEMPERATURE
°C - °F
°F = °C x 9/5 + 32
COMMON ENGINEERING CONVERSION - ACCELERATION DUE TO GRAVITY
g - m/s²
MULTIPLY BY 9.8
1g = 9.8 m/s²
AVIATION CONVERSIONS - FUEL LOADS
HOW CAN AIRCRAFT FUEL BE MEASURED?
IN VOLUME (LITRES, GALLONS)
BY WEIGHT (POUNDS, KILOGRAMS)
AVIATION CONVERSIONS - FUEL LOADS
CONVERT 71 170 IMP GAL TO LITRES
71 170 x 4.546
= 323538.82
SYSTEM PRESSURE
WHAT ARE THE MOST CRITICAL PRESSURE MEASUREMENT INSTRUMENTS ON AIRCRAFT?
- ENGINE OIL PRESSURE
- ENGINE PRESSURE RATIO
- FUEL PRESSURE
- HYDRAULIC PRESSURE
- VACUUM PRESSURE
- AIR PRESSURE
SYSTEM PRESSURE
HOW DO PRESSURE INSTRUMENTS WORK?
BY MEASURING THE PRESSURE DIFFERENCE BETWEEN TWO PLACES
SYSTEM PRESSURE
WHAT IS THE ABSOLUTE PRESSURE OF A FLUID?
THE PRESSURE DIFFERENCE BETWEEN A FLUID AND A VACUUM -
WHICH EXERTS NO PRESSURE
SYSTEM PRESSURE
WHICH AIRCRAFT INSTRUMENTS MAKE USE OF ABSOLUTE PRESSURE VALUES?
- ALTIMETER
- RATE OF CLIMB INDICATOR
- MANIFOLD PRESSURE GAUGE
SYSTEM PRESSURE
WHAT IS STANDARD PRESSURE?
THE STANDARD VALUE CREATED FOR ATMOSPHERIC PRESSURE
SYSTEM PRESSURE
IN IMPERIAL UNITS WHAT IS THE STANDARD ATMOSHPERIC PRESSURE?
14.696 psi
SYSTEM PRESSURE
CONVERT THE ATMOSPHERIC PRESSURE AT SEA LEVEL OF 14.7 PSI TO PASCALS (Pa)
14.7 x 6894.75 =
101352.825 Pa
SYSTEM PRESSURE
CONVERT THE ATMOSPHERIC PRESSURE AT SEA LEVEL OF 14.7 PSI TO INCHES OF MERCURY (inHg)
14.7 x 2.036 =
29.9292 inHg
PRESSURE CONVERSIONS
atm - inHg
MULTIPLY BY 29.92
1 atm = 29.92 inHg
PRESSURE CONVERSIONS
atm - bar
MULTIPLY BY 1.01325
1 atm = 1.01325 bar
PRESSURE CONVERSIONS
inHg - Pa
MULTIPLY BY 3386
1 inHg = 3386 Pa
PRESSURE CONVERSIONS
psi - inHg
MULTIPLY BY 2.036
1 psi = 2.036 inHg
PRESSURE CONVERSIONS
psi - Pa
MULTIPLY BY 6894.75
1 psi = 6894.75 Pa