SIFT - Army Aviation Exam with Accurate
Solutions
Three types of Rotor Systems - ANS-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 - ANS-Normal: 7-12 @300-500 AGL
Steep: 13-15
Shallow: 3-5
Manufacturer's Empty Weight (MEW) - ANS-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) - ANS-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) - ANS-Is the aircraft weight at any
given moment during flight. the AUW / AGW can decrease at any point during flight.
Maximum Landing Weight (MLW) - ANS-Aircraft's weight limit for landing
Maximum Zero Fuel Weight (MZFW) - ANS-Permissible weight of aircraft with its
contents and unusable fuel, no usable fuel or fluids
Maximum Takeoff Weight - ANS-The maximum allowable weight for takeoff.
Maximum Ramp Weight (MRW) - ANS-The weight limit for an aircraft to taxi or be towed
on the ground.
Parasitic Drag - ANS-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 - ANS-The drag created by the frictional resistance is the spinning airfoils.
, Straight and level flight - ANS-Main maneuver Constant heading and altitude is
maintained Wing tips even with horizon
4 actions of turning - ANS-1. Pilot moves cyclic to left/right
2. Extra power or lift added to counter of lift
3. Controls neutralized to stop any increase in bank angle/maintain angle
4. After turn over, ailerons are leveled back
Altitude and speed do what during turn - ANS-Decrease
Standard turn - ANS-3 degrees per second, 2 minute 360 degree turn.
Slipping turn - ANS-An uncoordinated turn in which the aircraft is banked too much for
the rate of turn, so the horizontal lift component is greater than the centrifugal force,
pulling the aircraft toward the inside of the turn.
Skidding turn - ANS-An uncoordinated turn in which the rate of turn is too great for the
angle of bank, pulling the aircraft to the outside of the turn.
Coordinated Turn - ANS-Centrifugal force and gravity react equally on the slip indicator
ball, and the ball remains in the lowest part of the glass
Class A airspace - ANS-18,000 ft MSL up to and including FL600. Within 12 NM of
coast overlying waters. All aircraft must operate at instrument flight rules, verbal grant
clearance
Class B Airspace - ANS-Surface up to 10,000 ft MSL surrounding nation's busiest
airports; upside-down wedding cake. ATC clearance required; VFR operations is "clear
of clouds"
Class C Airspace - ANS-Surface to 4,000 ft above airport elevation within 5 NM radius.
From 5-10 NM out, 1,200 ft to 4,000 ft above airport elevation. Clearance is required to
enter/exit, lead ace of call sign established
Class D Airspace - ANS-Surface up to 2,500 ft MSL surrounding airports with
operational control tower. When tower not active, becomes Class E airspace down to
700 ft, below which Class G.
Class E Airspace - ANS--All Controlled Airspace not classified as Class A,B,C,D.
Class G airspace - ANS-Uncontrolled, extends from surface up to controlled airspace
above (at most 14,500 ft MSL where class E airspace begins)
Takeoff from hover phase 1 - ANS-Helicopter is in hover, moving forward
Solutions
Three types of Rotor Systems - ANS-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 - ANS-Normal: 7-12 @300-500 AGL
Steep: 13-15
Shallow: 3-5
Manufacturer's Empty Weight (MEW) - ANS-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) - ANS-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) - ANS-Is the aircraft weight at any
given moment during flight. the AUW / AGW can decrease at any point during flight.
Maximum Landing Weight (MLW) - ANS-Aircraft's weight limit for landing
Maximum Zero Fuel Weight (MZFW) - ANS-Permissible weight of aircraft with its
contents and unusable fuel, no usable fuel or fluids
Maximum Takeoff Weight - ANS-The maximum allowable weight for takeoff.
Maximum Ramp Weight (MRW) - ANS-The weight limit for an aircraft to taxi or be towed
on the ground.
Parasitic Drag - ANS-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 - ANS-The drag created by the frictional resistance is the spinning airfoils.
, Straight and level flight - ANS-Main maneuver Constant heading and altitude is
maintained Wing tips even with horizon
4 actions of turning - ANS-1. Pilot moves cyclic to left/right
2. Extra power or lift added to counter of lift
3. Controls neutralized to stop any increase in bank angle/maintain angle
4. After turn over, ailerons are leveled back
Altitude and speed do what during turn - ANS-Decrease
Standard turn - ANS-3 degrees per second, 2 minute 360 degree turn.
Slipping turn - ANS-An uncoordinated turn in which the aircraft is banked too much for
the rate of turn, so the horizontal lift component is greater than the centrifugal force,
pulling the aircraft toward the inside of the turn.
Skidding turn - ANS-An uncoordinated turn in which the rate of turn is too great for the
angle of bank, pulling the aircraft to the outside of the turn.
Coordinated Turn - ANS-Centrifugal force and gravity react equally on the slip indicator
ball, and the ball remains in the lowest part of the glass
Class A airspace - ANS-18,000 ft MSL up to and including FL600. Within 12 NM of
coast overlying waters. All aircraft must operate at instrument flight rules, verbal grant
clearance
Class B Airspace - ANS-Surface up to 10,000 ft MSL surrounding nation's busiest
airports; upside-down wedding cake. ATC clearance required; VFR operations is "clear
of clouds"
Class C Airspace - ANS-Surface to 4,000 ft above airport elevation within 5 NM radius.
From 5-10 NM out, 1,200 ft to 4,000 ft above airport elevation. Clearance is required to
enter/exit, lead ace of call sign established
Class D Airspace - ANS-Surface up to 2,500 ft MSL surrounding airports with
operational control tower. When tower not active, becomes Class E airspace down to
700 ft, below which Class G.
Class E Airspace - ANS--All Controlled Airspace not classified as Class A,B,C,D.
Class G airspace - ANS-Uncontrolled, extends from surface up to controlled airspace
above (at most 14,500 ft MSL where class E airspace begins)
Takeoff from hover phase 1 - ANS-Helicopter is in hover, moving forward
