Test 2 Flashcards
1
Q
Cylinder Arrangement O
A
Horizontally Opposed
2
Q
Cylinder Arrangement R
A
Radial engine
3
Q
Cylinder Arrangement I
A
inline Engine
4
Q
Cylinder Arrangement V
A
V Type
5
Q
Cylinder Arrangement X
A
X Type
6
Q
Operation Modifiers I
A
Fuel Injected
7
Q
Operation Modifiers T
A
Turbocharged
8
Q
Operation Modifiers S
A
Supercharged
9
Q
Operation Modifiers A
A
Modified for Aerobatics
10
Q
Operation Modifiers G
A
Geared Drive
11
Q
Operation Modifiers L
A
Left hand rotation (Multi Engine)
12
Q
Operation Modifiers H
A
Horizontal Mounting (Helicopter)
13
Q
Operation Modifiers V
A
Vertical Mounting (helicopter)
14
Q
Teledyne continental Motors
4 Cylinder
A
1-4-2-3
15
Q
Teledyne Continental Motors 6 Cylinder
A
1-6-3-2-5-4
16
Q
Textron-Lycoming 4 cylinder
A
1-3-2-4
17
Q
Textron-Lycoming 6 Cylinder
A
1-4-5-2-3-6
18
Q
Textron-Lycoming 8 Cylinder
A
1-5-8-3-2-6-7-4
19
Q
14 Cylinder time row radial engines
A
add 9, subtract 5
20
Q
18 Cylinder time row radial engines
A
add 11, subtract 7
21
Q
Alternator/generators
A
used to create electricity from the engine for lights/communications/navigation
22
Q
Hydraulic Pumps
A
used to create hydraulic pressure and flow from our engine for flight controls, landing gear etc
23
Q
Propeller
A
used to generate thrust
24
Q
Propeller governor
A
used to control propeller speed by changing blade angle
25
Propeller synchronizer
used to match the speed and/or blade position of two propellers
26
Vacuum/air pumps
used to drive instruments, de-ice systems
27
calculation of engine's fuel consumption
Break horsepower X Specific fuel consumption
28
Indicator Diagram is known as a
p-V diagram
29
what is a indicator Diagram used for
visualize the process in a otto cycle
30
Isothermal Process
lines of constant temperature curve
31
Adiabatic Process
no heat is transferred to the gas
32
Two most common ways of classifying reciprocating engines are by
cylinder arrangement with respect to the crankshaft and the method of cooling
33
Two basic types of radial engines include
rotary type and static
34
Rotary Radial Engines disadvantage
torque effect produced by the propeller made the aircraft hard to control
35
Static-type radial engines
Crankcase is bolted to the airframe and remains stationary
36
Static-type engines are reliable and have a high
power to weight ratio
37
Static-type radial engines typical configuration consisted of
5-9 cylinders
38
how many cylinders does a double row radial engine have and what is a problem
18 cylinders, hard to cool
39
To help cooling
the rear row of cylinders is staggered
40
inline engines had a disadvantage of a relatively
low power to weight ratio
41
Inline engines were difficult to cool if air- cooled. air-cooled engines were limited to
4-6 Cylinders
42
V type Engines
cinders are arranged around a single crankshaft in two in-line banks of 45,60,90 degrees offset
43
V type engines produced more power than
| Why
inline because it had two rows of cylinders which allowed for better cooling of the cylinders
44
V type used what way of cooling
air or liquid - higher power to weight ratio when compared to equal inline engine
45
Many V-type engines were
inverted
46
Opposed engines
most popular types installed in current production
47
Opposed has a even number of
cylinders
48
Opposed engines have a
high power to weight ratio
49
Opposed engines also have a smaller
frontal area, which reduces aerodynamic drag
50
Bore
Cylinder diameter
51
Piston Stroke
distance travelled from TDC to BDC
52
Square Engine
bore and stoke are equal
53
Over square engine
bore is larger than the stroke
54
under square engine
stroke is larger than the bore
55
Induction System
provides clean air and fuel for reliable engine operation
56
3 types of Induction systems
carbureted
Fuel injected
super/Turbo charged
57
Air moved through the induction system, at times in cools or warms. What can form
Ice from the vaporization of fuel resulting in significant temperature drops
58
How do we deal with this induction system
carburetor heat of alternate air path to melt the ice blockages
59
Simple Carburetors have a
venturi
60
Venturi
created low pressure region that draws fuel through a nozzle to spray atomized fuel into the induction air
61
Modern Carburetors parts comparison
same parts as a simple carburetor, but add more to improve performance
62
Modern Carburetors 2 major limitations
Intake manifolds differ in length and shape, fuel/air mixture is not distributed evenly to all cylinders
They are frequently get carburetor icing
63
how does Fuel injection work
fuel must be provided to the nozzles under pressure so there must be a fuel pump
64
Both fuel injection systems have similar parts but operation differs. they will include
```
an engine driven fuel pump
throttle body
fuel metering unit
flow divider or spider valve
fuel nozzles
```
65
2 main fuel injection systems used on aircraft
RSA, Teledyne Continental
66
How does RSA system work
uses fuel pressure and air pressure to determine and control how much fuel is sent to the cylinders from the fuel regulator
67
how does Teledyne Continental fuel injection work
used fuel pressure to determine and control how much fuel is sent to the cylinders from the fuel control assembly
68
Turbo/supercharging
to get a volumetric efficiency of more than 100% requires supercharger or a turbo-supercharger
69
what to turbo/superchargers do for the engine
allows the engine to generate higher powers, and eliminate or reduce the power loss as we climb higher into less dense air.
70
exhaust system has 2 jobs - what are they
collect and take exhaust gasses away from the engine
absorb noise and or reduce the exhaust gas velocity to reduce noise
71
Naturally aspirated exhaust systems
simple, sometimes just pipes to carry the exhaust overboard
usually have a muffler, a "can" containing baffles to reduce noise
