013 lessons
Air, motion and aerodynamic forces
Build the force and energy language used throughout aerodynamics.
EASA 081 · ATPL(A) syllabus topicsOpen chapterTHE YPI LEARNING LIBRARYEASA ATPL(A)
Principles of Flight.
Make the forces visible.
081 · EASA ATPL(A). Explore the chapters below, with visual explanations and original practice questions.
Foundations3 chapters
023 lessons
Aerofoils, pressure and angle of attack
Connect pressure distribution, downwash and the lift curve without the equal-transit-time myth.
EASA 081 · ATPL(A) syllabus topicsOpen chapter033 lessons
Boundary layers and separation
Understand why viscosity can control a large aerodynamic force.
EASA 081 · ATPL(A) syllabus topicsOpen chapterDrag and lift management4 chapters
043 lessons
Finite wings, downwash and induced drag
Explain the cost of producing lift with a real, finite span.
EASA 081 · ATPL(A) syllabus topicsOpen chapter053 lessons
Parasite drag and the drag polar
Combine friction, pressure, interference and lift-dependent drag.
EASA 081 · ATPL(A) syllabus topicsOpen chapter063 lessons
Thrust required, power required and energy
See why least thrust and least power occur at different speeds.
EASA 081 · ATPL(A) syllabus topicsOpen chapter073 lessons
High-lift devices and configuration changes
Distinguish the effects of flaps, slats, slots and spoilers.
EASA 081 · ATPL(A) syllabus topicsOpen chapterStall and handling3 chapters
083 lessons
The stall and the angle-of-attack limit
Explain stall speed changes without treating speed as the direct cause.
EASA 081 · ATPL(A) syllabus topicsOpen chapter093 lessons
Planform, sweep, twist and stall progression
Connect wing geometry to lift distribution and control near the stall.
EASA 081 · ATPL(A) syllabus topicsOpen chapter103 lessons
Surface contamination and ice
Understand why a small shape change can remove large aerodynamic margins.
EASA 081 · ATPL(A) syllabus topicsOpen chapterDrag and lift management1 chapter
113 lessons
Ground effect and wake vortices
Separate the local ground-effect benefit from the wake hazard behind an aircraft.
EASA 081 · ATPL(A) syllabus topicsOpen chapterStability and control5 chapters
123 lessons
Longitudinal static stability
Use moments and the neutral point to explain the centre-of-gravity effect.
EASA 081 · ATPL(A) syllabus topicsOpen chapter133 lessons
Lateral and directional stability
Follow sideslip through roll and yaw restoring tendencies.
EASA 081 · ATPL(A) syllabus topicsOpen chapter143 lessons
Dynamic modes and damping
Distinguish returning tendency from the growth or decay of motion.
EASA 081 · ATPL(A) syllabus topicsOpen chapter153 lessons
Primary controls and cross-coupling
Connect deflection, aerodynamic moment, angular acceleration and coordination.
EASA 081 · ATPL(A) syllabus topicsOpen chapter163 lessons
Trim, control forces and aerodynamic balance
Explain how an aircraft can fly hands-off and why speed changes alter the balance.
EASA 081 · ATPL(A) syllabus topicsOpen chapterFlight mechanics3 chapters
173 lessons
Level flight, climb, descent and glide
Resolve the force balance and identify the energy source.
EASA 081 · ATPL(A) syllabus topicsOpen chapter183 lessons
Coordinated turns and load factor
Derive the turning force from the tilted lift vector.
EASA 081 · ATPL(A) syllabus topicsOpen chapter193 lessons
Manoeuvre and gust envelopes
Read the boundaries between aerodynamic and structural limitations.
EASA 081 · ATPL(A) syllabus topicsOpen chapterHigh-speed flight3 chapters
203 lessons
Compressibility, Mach number and shocks
See why local flow can become sonic before the aircraft reaches M 1.
EASA 081 · ATPL(A) syllabus topicsOpen chapter213 lessons
Transonic wings and buffet margin
Follow how altitude, load and Mach change the usable flight region.
EASA 081 · ATPL(A) syllabus topicsOpen chapter223 lessons
High-speed pitching effects and aeroelasticity
Explain Mach tuck, control changes and the structural feedback hidden in the wing.
EASA 081 · ATPL(A) syllabus topicsOpen chapterPropellers and asymmetric flight2 chapters
233 lessons
Propeller blade aerodynamics
Treat the blade as a rotating aerofoil with a changing relative flow.
EASA 081 · ATPL(A) syllabus topicsOpen chapter243 lessons
Propeller effects and asymmetric thrust
Trace the separate sources of yaw, roll and control demand.
EASA 081 · ATPL(A) syllabus topicsOpen chapterStall and handling1 chapter
253 lessons
Spins, upsets and aerodynamic priorities
Use the mechanisms to explain recovery priorities and avoid misleading cues.
EASA 081 · ATPL(A) syllabus topicsOpen chapterYour learning, across devices.
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