ATSC 231 Block 3 Exam Question and answers correctly solved
1 view 0 purchase
Module
ATSC 231
Institution
ATSC 231
ATSC 231 Block 3 Exam Question and answers correctly solved
What are the three hazards resulting from turbulence - correct answer • Loss of Control
• Airframe Damage
• Passenger Comfort/Safety
What is the type of aircraft operation in which turbulence produces the greatest freque...
atsc 231 block 3 exam question and answers correct
Written for
ATSC 231
ATSC 231
Seller
Follow
Academia199
Reviews received
Content preview
ATSC 231 Block 3 Exam Question and
answers correctly solved
What are the three hazards resulting from turbulence - correct answer ✔•
Loss of Control
• Airframe Damage
• Passenger Comfort/Safety
What is the type of aircraft operation in which turbulence produces the
greatest frequency of accidents - correct answer ✔part 121
For part 121 turbulence accidents, what percent of accidents overall are from
turbulence (annual trend)? - correct answer ✔38%
For part 121 turbulence accidents, what is the most common time of year? -
correct answer ✔July (during the summer with the most convection)
For part 121 turbulence accidents, what is the most common altitude? -
correct answer ✔30,000-35,000 feet
For part 121 turbulence accidents, what is the most common phase of flight? -
correct answer ✔En-route descent and cruise
What is the difference between Flight (or Limit) Load Factor and Design (or
Ultimate) Load Factor? - correct answer ✔Flight (limit) load factor: category
aircraft falls in
Normal is 3.8 Gs to -1.52
Utility is 4.4 to -1.76
,Acrobatic is 6.0 to -3.00
Design (ultimate) load factor: 1.5 greater than Flight Load Factor
(point at which plane breaks)
For part 121 turbulence accidents, what is the worst place within the airplane?
- correct answer ✔Back of the airplane (aft)
· Be able to identify the average annual number of injuries from turbulence -
correct answer ✔60 per year
For part 121 turbulence accidents, what are is the most common type of
person (passengers or flight attendants) - correct answer ✔Flight attendants
For part 121 turbulence accidents, what type of turblucence causes the most
accidents?
Clear air turbulence
mountain wave turbulence
wake turbulence
unknown turbulence
convective turbulence - correct answer ✔Convective turbulence
What factors determine the transition from laminar to turbulent flow - correct
answer ✔- Wind speed
- Surface Roughness
- Air Density
- Stability
,- Viscosity
- Other factors
For part 121 turbulence accidents, what is the most common place of injury on
the body? - correct answer ✔Lower extremity
What is the FAA definition of turbulence? - correct answer ✔Irregular
fluctuations occurring in fluid motions
What are two types of turbulent flow - correct answer ✔- Wave
- Eddies or Vortices
What is the aviation definition of turbulence? - correct answer ✔Irregular
motion of an aircraft in flight, especially when characterized by rapid up-and-
down motion, caused by a rapid variations of atmospheric wind velocities.
Which scale represents turbulent motions for aircraft - correct answer ✔•
Turbulence that affects aircraft occurs on the microscale
What are the factors that determine lift? - correct answer ✔- Coefficient of
Lift (CL )
- Air Density (r)
- Air Speed (V)
- Wing Area (S)
How does the coefficient of lift change with angle of attack? - correct answer
✔CL increases with AoA, until you stall at which point Cl decreases
, Define load factor - correct answer ✔- Ratio of the total air load acting on an
aircraft to the gross weight of the aircraft
What 3 factors affect load factor in turbulence - correct answer ✔- Strength
of gusts
- Airspeed
- Wing Loading
What are some characteristics of waves and eddies? - correct answer
✔Wave - Regular oscillation of wind
Eddies - Vortices embedded in the mean wind flow
How does airspeed affect load factor - correct answer ✔- Determines
additional lift force generated by gust
- Slower is better (goal is to stall before exceeding design characteristics)
The higher the airspeed the less the AOA changes with a vertical gust
How do vertical gusts affect load factor - correct answer ✔- Results in
• Change of relative wind
• Change in AOA
The stronger the gust compared to airspeed the more the AoA changes
Define wing loading - correct answer ✔- Ratio of weight of aircraft to wing
surface area
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 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 Academia199. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £14.33. You're not tied to anything after your purchase.
