SIFT Study Guide 2024/2025 Exam
Questions with 100% Correct Answers |
Latest Update
The four forces acting on helicopter in forward flight are...? - 🧠ANSWER
✔✔Thrust, drag, weight, lift
Bernoulli's Principle or the "venturi effect" - 🧠ANSWER ✔✔As air flows
over upper surface of airfoil, camber (curvature) of airfoil causes increase
in speed of airflow which decreased pressure. Pressure is increased on
bottom and this gives lift.
Newtons Third Law of Motion and how it applies to helicopters -
🧠ANSWER ✔✔"for every action there is an equal and opposite reaction"
*small amount of lift is provided by the rotor blades lower surface deflecting
air downward, thus having a small force upward
Weight is overcome by ______ and this is accomplished by increasing the
____ _____ of the main rotor blades. - 🧠ANSWER ✔✔thrust;
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,pitch angle
The tail rotor produces thrust and is variable through use of antitorque
pedals which control the helicopters _______. - 🧠ANSWER ✔✔yaw
Drag always acts parallel to the relative _______.
Total drag is composed of three types of drag.... - 🧠ANSWER ✔✔wind
profile, induced, parasite
What is Parasite drag? - 🧠ANSWER ✔✔any "parasite" on the aircraft that
creates a drag.
Ex: low air pressure in tires, skin friction (rough surface that creates
resistance)
What is profile drag? - 🧠ANSWER ✔✔drag produced by shape of the
aircraft
What is induced drag? - 🧠ANSWER ✔✔when at the back of the wing, air
flowing fast over the top meets air flowing slowly underneath.
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
,Newtons First Law of Motion states that.... - 🧠ANSWER ✔✔an object at
rest will stay at rest, and in motion will remain in motion at constant velocity
unless acted upon by an unbalanced force
Four Types of Friction: - 🧠ANSWER ✔✔1. Sliding/Kinetic Friction
2. Fluid Friction (through air or water)
3. Rolling Friction: when object rolls instead of slides across surface
4.Static Friction
Newtons Second Law of Motion states that... - 🧠ANSWER ✔✔When object
is acted upon by constant force, its resulting acceleration is inversely
proportional to the mass and directly proportional to the applied force
F=ma
Newtons Law of Universal Gravitation equation - 🧠ANSWER
✔✔Fg=(Gm1m2)/d^2
G=gravitational constant=6.67x10^-11
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
, Two objects a distance of "d" apart. What happens to force b/w the two
objects if you increase d by a factor of 4? - 🧠ANSWER ✔✔You decrease
the force by a factor of 16
Aircraft weight and balance: what does each acronym stand for and mean?
1. MEW
2.OEW
3. AUW
4. MLW
5. MZFW
6. MTOW
7. MRW - 🧠ANSWER ✔✔1. Manufacturers Empty Weight: total weight of
aircraft as it was built and meant to fly, and does not include fuel or fluids,
passengers or other things
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
Questions with 100% Correct Answers |
Latest Update
The four forces acting on helicopter in forward flight are...? - 🧠ANSWER
✔✔Thrust, drag, weight, lift
Bernoulli's Principle or the "venturi effect" - 🧠ANSWER ✔✔As air flows
over upper surface of airfoil, camber (curvature) of airfoil causes increase
in speed of airflow which decreased pressure. Pressure is increased on
bottom and this gives lift.
Newtons Third Law of Motion and how it applies to helicopters -
🧠ANSWER ✔✔"for every action there is an equal and opposite reaction"
*small amount of lift is provided by the rotor blades lower surface deflecting
air downward, thus having a small force upward
Weight is overcome by ______ and this is accomplished by increasing the
____ _____ of the main rotor blades. - 🧠ANSWER ✔✔thrust;
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
1
STATEMENT. ALL RIGHTS RESERVED
,pitch angle
The tail rotor produces thrust and is variable through use of antitorque
pedals which control the helicopters _______. - 🧠ANSWER ✔✔yaw
Drag always acts parallel to the relative _______.
Total drag is composed of three types of drag.... - 🧠ANSWER ✔✔wind
profile, induced, parasite
What is Parasite drag? - 🧠ANSWER ✔✔any "parasite" on the aircraft that
creates a drag.
Ex: low air pressure in tires, skin friction (rough surface that creates
resistance)
What is profile drag? - 🧠ANSWER ✔✔drag produced by shape of the
aircraft
What is induced drag? - 🧠ANSWER ✔✔when at the back of the wing, air
flowing fast over the top meets air flowing slowly underneath.
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
2
STATEMENT. ALL RIGHTS RESERVED
,Newtons First Law of Motion states that.... - 🧠ANSWER ✔✔an object at
rest will stay at rest, and in motion will remain in motion at constant velocity
unless acted upon by an unbalanced force
Four Types of Friction: - 🧠ANSWER ✔✔1. Sliding/Kinetic Friction
2. Fluid Friction (through air or water)
3. Rolling Friction: when object rolls instead of slides across surface
4.Static Friction
Newtons Second Law of Motion states that... - 🧠ANSWER ✔✔When object
is acted upon by constant force, its resulting acceleration is inversely
proportional to the mass and directly proportional to the applied force
F=ma
Newtons Law of Universal Gravitation equation - 🧠ANSWER
✔✔Fg=(Gm1m2)/d^2
G=gravitational constant=6.67x10^-11
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
, Two objects a distance of "d" apart. What happens to force b/w the two
objects if you increase d by a factor of 4? - 🧠ANSWER ✔✔You decrease
the force by a factor of 16
Aircraft weight and balance: what does each acronym stand for and mean?
1. MEW
2.OEW
3. AUW
4. MLW
5. MZFW
6. MTOW
7. MRW - 🧠ANSWER ✔✔1. Manufacturers Empty Weight: total weight of
aircraft as it was built and meant to fly, and does not include fuel or fluids,
passengers or other things
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
4
STATEMENT. ALL RIGHTS RESERVED
