EASA ATPL021 aircraft general knowledge foundations case studies
EASA ATPL021 aircraft general knowledge foundations · Put your knowledge to work in context.
This independent study page provides practice for EASA ATPL021 aircraft general knowledge foundations. Its editorial learning areas include Airframe, controls and landing gear; Hydraulic, pneumatic and electrical power; Piston/turbine powerplant and propeller governing; Fuel, icing, fire and oxygen concepts. The questions develop subject knowledge and application through worked reasoning, distinctions between competing answers, and practical scenarios. Study the relevant guide before attempting a mixed set, then explain the evidence or calculation that supports each answer. Topics on this exam: Airframe, controls and landing gear, Hydraulic, pneumatic and electrical power, Piston/turbine powerplant and propeller governing, and Fuel, icing, fire and oxygen concepts. The EASA ATPL021 aircraft general knowledge foundations case studies are 4 cases and about 768 words.
1Force does not establish actuator speed
A fictional hydraulic model supplies a pressure of 8 megapascals at a piston with an effective area of 0.0005 square metres. Ignore losses and the pressure on the opposite side for this first calculation.
187 words, under 1 min2A specified resistive load
A fictional bench calculation gives a 28 volt ideal DC source and a purely resistive 4 ohm load. The question first ignores wiring loss and asks for current and power.
192 words, under 1 min3Governed speed with reduced torque
A fictional shaft-power calculation states that a propeller governor holds rotational speed at 2,000 revolutions per minute throughout its specified operating range. Torque initially equals 500 newton metres and later falls to 400 newton metres, with the scenario explicitly keeping both points inside that governing range.
192 words, under 1 min4A fuel quotient and a derived display
A fictional planning exercise gives 600 litres total fuel, of which 30 litres are explicitly defined as unusable. Two engines are assumed to consume 90 litres per hour each throughout the calculation.
197 words, under 1 min