Air Wisconsin - Systems (Day 2 Homework Questions) || very Flawless.
1 view 0 purchase
Course
Air Wisconsin - Systems
Institution
Air Wisconsin - Systems
What type of engine is used on the CL-65? correct answers Two, General Electric CF34-3B1
High Bypass Turbofan
Dual Assembly Engine
FCM 2.21.1 (Page 75)
What do the colors (red, amber, green) represent on the EICAS engine displays? correct answers Red - Maximum and Minimum limitations
Amber -...
Air Wisconsin - Systems (Day 2 Homework Questions) ||
very Flawless.
What type of engine is used on the CL-65? correct answers Two, General Electric CF34-3B1
High Bypass Turbofan
Dual Assembly Engine
FCM 2.21.1 (Page 75)
What do the colors (red, amber, green) represent on the EICAS engine displays? correct answers
Red - Maximum and Minimum limitations
Amber - Caution Range
Green - Normal Operating Range
Which part of the engine is associated with the N2 section? correct answers Compressor Rotor (2
stage high pressure turbine)
14 Stage compressor
10th Stage (multiple sources; engines (primary), APU, Ground)
• Engine Starter
• Pressurization (vacuum for outflow valve)
• Air Conditioning
• Avionics Cooling
14th Stage (engine only)
• Thrust Reverse
• Wing/Cowl Anti Ice
7th Stage (not controlled by pilots)
• Used in engine lubrication
Which engine gauges display fan speed? correct answers N1
Does engine core air or bypass air provide more thrust? correct answers Bypass air provides 80%
of the engine thrust
FTM, page 103
What is the purpose of variable geometry vanes in both the engine and APU compressor
sections? correct answers (Optimizes airflow)
-Adjust angle of compressor inlet guide vanes
-Optimizes angle of attack of airflow at compressor blades
-Improves efficiency of the compressor
-Protects against compressor stall and surge.
(Slide, page 6)
Name some of the components that are located on the accessory gear box of the engine (5
minimum)? correct answers Fuel Pump
Hydraulic Pump
Lubrication Pump
, Air Turbine Starter
CSD unit for the IDG
(Ok FTM, page 229)
If the engine driven fuel pump fails will the engine continue to operate? correct answers If the
engine driven fuel pump fails, the associated engine will fail.
How is the engine oil cooled? correct answers Oil flows through a filter and an oil/fuel heat
exchanger.
With the engine speed switches on, what speed mode is controlling the engine at high power
setting (>79%)? At low power settings (<79%) correct answers The engine is controlled by an
ECU operating together with a mechanical FCY. At low power settings, an electrical fan speed
(N1) governing system operating at high power settings. Low power settings, N2.
What is the difference between N1 mode and N2 Mode? correct answers -N1 is high speed mode
(Fuel flow trimmed by speed computer).
- Improves Engine Efficiency
- Match thrust between engines
- Prevent engine over speed and over temp
-N2 is low speed mode (Hydromechanical System controls).
What is the caution related to turning the engine speed switches off at high power settings?
correct answers If engine speed switches are moved to off when high power is set, a rapid
increase in engine RPM will occur and ITT will move up excessively.
What are the engine starter cranking time limits for an engine start? correct answers Start attempt
1, 1 minute max time on, followed by 10 seconds off;
Start attempt 2, 1 minute max time on, then 10 seconds off;
Start attempt 3, 1 minute on, the 5 minutes off;
Start attempt 4, 1 minute on, then 5 minutes off.
(FCM, page 79)
What are the engine starter cranking time limits for engine dry motoring? correct answers Start 1
has a maximum start time of 90 seconds, followed by 5 minutes off, then for second and
subsequent starts, 30 seconds, then 5 minutes off.
(FCM, page 79)
How many ignition systems are on each engine? correct answers Two ignition systems are on
each engine. Ignition A and Ignition B.
(FTM, page 230)
Which ignition system must be used when doing an external DC start? Why? correct answers
Ignition B. Ignition B is powered from a static inverter by the DC Battery Bus.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller FullyFocus. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.59. You're not tied to anything after your purchase.
