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SIFT - Army Aviation Exam Study Guide with Complete Solutions
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SIFT - Army Aviation Exam Study Guide with Complete Solutions Three types of Rotor Systems - Answer-1. Semirigid - composed of two blades that are rigidly mounted to the main rotor hub 2. Rigid - the blade roots are rigidly attached to the rotor hub 3. Fully articulated - allow each blade to l...

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  • October 7, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
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  • sift army aviation exam study guide with complet

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EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024




SIFT - Army Aviation Exam Study Guide
with Complete Solutions

Three types of Rotor Systems - Answer✔✔-1. Semirigid - composed of two blades that are rigidly

mounted to the main rotor hub


2. Rigid - the blade roots are rigidly attached to the rotor hub


3. Fully articulated - allow each blade to lead/lag (move back and forth in plane), flap (move up and

down about an invoiard mounted hinge), independent of the otherblades, and feather (rotate about the

pitch axis to change lift)


3 Types of Approach - Answer✔✔-Normal: 7-12 @300-500 AGL


Steep: 13-15


Shallow: 3-5


Manufacturer's Empty Weight (MEW) - Answer✔✔-Total weight of the aircraft as it was built. this

includes the system operating components but does not include unusable fuel. before fluids, fuel or oil is

inserted.


Operating Empty Weight (OEW) - Answer✔✔-MEW plus the weight of the crew, fluids, unusable fuel,

and the equipment required for flight.


All-Up Weight (AUW) or Aircraft Gross Weight (AGW) - Answer✔✔-Is the aircraft weight at any given

moment during flight. the AUW / AGW can decrease at any point during flight.


Page 1/7

, EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024


Maximum Landing Weight (MLW) - Answer✔✔-Aircraft's weight limit for landing


Maximum Zero Fuel Weight (MZFW) - Answer✔✔-Permissible weight of aircraft with its contents and

unusable fuel, no usable fuel or fluids


Maximum Takeoff Weight - Answer✔✔-The maximum allowable weight for takeoff.


Maximum Ramp Weight (MRW) - Answer✔✔-The weight limit for an aircraft to taxi or be towed on the

ground.


Parasitic Drag - Answer✔✔-Created by the non-lifting portions of the helicopter, such as the fuselage,

engine cowlings, hub, mast, landing gear, and external loads.




Lowest drag at low speeds, increases to Highest drag at high speeds.


Profile Drag - Answer✔✔-The drag created by the frictional resistance is the spinning airfoils.




Middle drag at low speeds, only increases slightly as speed increases.


Induced Drag - Answer✔✔-Generated by the airflow circulation around the wing as it creates lift.




Highest drag at lower speeds, decreases to lowest at higher speeds.


4 forces of hovering - Answer✔✔-Weight, lift, thrust, drag in balance




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