CPAER Exam Questions with 100% Correct Answers | Verified | Updated 2024, Exams of Advanced Education

Download CPAER Exam Questions with 100% Correct Answers | Verified | Updated 2024 and more Exams Advanced Education in PDF only on Docsity! CPAER Exam Questions with 100% Correct Answers | Verified | Updated 2024 Chord - Correct Answer-Straight line joining leading edge to the trailing edge Camber line - Correct Answer-Line which runs midway between upper and lower surfaces of the airfoil joint the trailing and leading edge. Camber - Correct Answer-The measure of the curvature of the airfoil. Expressed as a percentage Angle of attack - Correct Answer-The angle between the chord of the wing and the relative airflow Centre of pressure - Correct Answer-Lift and drag act through the centre of pressure of the wing. The centre of pressure moves with a change in the angle of attack. pg. 1 professoraxe l Centre of gravity - Correct Answer-The point through which the resultant of the weight of all of the components on the aircraft can be considered to act. The centre of ____ is ahead of the centre of _____. - Correct Answer-Gravity, pressure. Axes of rotation - Correct Answer-Three axes which rotate about the aircrafts centre of gravity Lateral axis associated with... - Correct Answer-Pitch Longitudinal axis associated with... - Correct Answer-Roll Vertical axis associated with.... - Correct Answer-Yaw Lift acts... - Correct Answer-Perpendicular to relative airflow Weight acts... - Correct Answer-Towards the centre of earth (gravity) pg. 2 professoraxe l cL = lift coefficient (shape of wing and angle of attack) Drag - Correct Answer-The resistance of an airplane to moving through the air. Parasite drag - Correct Answer-Cause by all parts of the aircraft not producing lift. Parasite drags 3 components - Correct Answer-Form drag Interference drag Skin friction Form drag - Correct Answer-(Shape drag) Results for the air moving over a particular shape. Interference drag - Correct Answer-The additional drag which results when two or more objects are joined together (i.e fuselage and wings) Parasite drag depends on the following - Correct Answer-Air density (greater), surface area, and velocity. pg. 5 professoraxe l Induced drag - Correct Answer-The by-product of producing lift. Wing greats and equal and opposite force upwards and downwards, the downwash is known as induced drag. How does a wing create lift? - Correct Answer-Creating a low pressure above the wing (air has to move faster above the wing) and a high pressure below the wing. (High moves toward the low creating lift. What kind of wings produce more induced drag? - Correct Answer-Low aspect ratio wings. Induced drag is increased by... - Correct Answer-Increase in aeroplane weight, decreasing air density, and increasing true airspeed. Lower air density requires a... - Correct Answer-Higher angle of attack What reduces induced drag? - Correct Answer-High aspect ratios and winglets. pg. 6 professoraxe l What type of drag is associated with high speeds? Low speeds? - Correct Answer-Parasite drag at high speeds. Induced at low. When is drag the least? - Correct Answer-Middle of the speed range. This is known as Vmd (minimum drag speed) Which type of drag changes with angle of attack? - Correct Answer-Induced. Drag and an increase in altitude... - Correct Answer-Induced drag increases. Parasite drag decreases. Drag and aircraft weight... - Correct Answer-Induced drag increases. Parasite remains the same. pg. 7 professoraxe l A crosswind will effect the range how? - Correct Answer- Decreasing the range, due to some of the aircrafts velocity being used to maintain course. Range will begin to decrease if the airplane flys slower then.... - Correct Answer-Vmd - minimum drag speed. Range will be increased at higher altitudes due to.... - Correct Answer-Decrease in air density resulting in decreased parasite drag. For maximum range, as altitude increases, power required... - Correct Answer-Decreases Extra weight results in a ____ maximum range. - Correct Answer-Decreased Endurance. - Correct Answer-How long you can keep flying on a given amount of fuel. In piston engines, the rate of fuel consumption is directly proportional to... - Correct Answer-The power setting pg. 10 professoraxe l Maximum endurance will be achieved... - Correct Answer-At the speed at which the power required to keep the airplane aloft is lowest. (Vmp - minimum power) Endurance decreases with... - Correct Answer-Altitude When an aircraft is in a steady climb... - Correct Answer-The forces on it are in equilibrium. Rate of climb depends on... - Correct Answer-Excess power Angle of climb depends on... - Correct Answer-Excess thrust Vx - Correct Answer-Maximum obstacle clearance speed. Maximum altitudes gained over a given distance. Vy - Correct Answer-Maximum altitude gain for time. pg. 11 professoraxe l Service ceiling - Correct Answer-When maximum rate of climb reduces to 100ft per min. Absolute ceiling - Correct Answer-The height at which the rate of climb reduces to zero. When an aircraft is in steady descent... - Correct Answer-The forces on it are in equilibrium. Gliding flight - Correct Answer-The same as descending flight with the absence of thrust. Drag is balanced by the weight component which now acts forward in the direction of flight. Effects of tailwind and headwinds on descent... - Correct Answer-Tailwind will cause a shallower angle of descent. Headwind will steepen the angle of descent. An aeroplane will glide the furthest when flown.... - Correct Answer-At the speed for maximum lift to drag ratio. pg. 12 professoraxe l Ice can reduce lift and increase drag by... - Correct Answer- Reduce lift by 30% Increase drag by 40% Load factor - Correct Answer-The ratio of lift to weight. Load factor in straight and level flight is... - Correct Answer-1 Load factor in... 15' bank: 30' bank: 45' bank: 60' bank: 75' bank: - Correct Answer-15 = 1.04 30 = 1.15 45 = 1.41 60 = 2 75 = 3.9 pg. 15 professoraxe l The lower the airspeed, the ____ rate of turn - Correct Answer-Higher Stability - Correct Answer-The aircrafts ability to recover from a disturbance about a particular axis Rudder provides control about the... - Correct Answer-Vertical axis Valve overlap - Correct Answer-When intake and exhaust valves are both. Open. This allows intake air to push out exhaust making the engine more efficient. Mixture is measured by... - Correct Answer-Weight Detonation - Correct Answer-Flame starts at many points throughout the cylinder. Mixture burns all at once. Detonation caused by... - Correct Answer-Too low octane rating fuel. Running engine too hot. Running engine with too high manifold pressure. pg. 16 professoraxe l If detonation is expected you should... - Correct Answer- Riches the mixture. Increase engine cooling. Reduce power. You may use fuel with a ____ octane rating - Correct Answer- Higher Pre-ignition usually caused by... - Correct Answer-Small accumulations of lead or carbon on the spark plugs AVGAS 80/87 colour - Correct Answer-Red AVGAS 100/130 colour - Correct Answer-Green Jet fuel - Correct Answer-Straw coloured or undyed MOGAS 87-90 colour - Correct Answer-Green MOGAS 84-87 colour - Correct Answer-Undyed pg. 17 professoraxe l manifold required. Above this altitude engine performance will decrease. Aftercooler - Correct Answer-Cools the air after it has been compressed. Waste gate - Correct Answer-Controls how much exhaust gas is directed to the turbocharger. When the waste gate is open... - Correct Answer-Exhaust gases completely bypass the turbocharger. Two types of compressors? - Correct Answer-Axial and centrifugal Difference between axial and centrifugal compressors? - Correct Answer-Axial compressors send air parallel to engine whereas centrifugal accelerates air outwards. Stator blades are.... - Correct Answer-Fixed pg. 20 professoraxe l Three main types of combustion chambers? - Correct Answer- Can Annular Cannular Rain on the windshield causes.... - Correct Answer-Runway to look lower then it actually is. Haze on approach - Correct Answer-Farther away then actually are High terrain around runway - Correct Answer-Fly a higher approach Empty field myopia - Correct Answer-When flying through featureless sky, eyes will focus 3 to 5 feet in front. Autokenisis - Correct Answer-Focuses on a single light in an area. Opposite turning illusion (vestibular) - Correct Answer-When you turn the fluid in your ear goes with the turn, when you pg. 21 professoraxe l level off the fluid continues to rotate and you think your still turning. Coreolis illusion - Correct Answer-When you turn your head in a turn. This give a tumbling sensation. Hypoxic hypoxia - Correct Answer-Insufficient oxygen at sufficient pressure available in lungs. Stagnant hypoxia - Correct Answer-Blood and thus oxygen is prevented from moving throughout the body Anaemic hypoxia - Correct Answer-The blood is unable to absorb and carry the oxygen from the lungs to the body Hystoxic hypoxia - Correct Answer-The cells in he various organs and tissues are unable to absorb oxygen properly Useful consciousness with hypoxia and altitude... - Correct Answer-10,000ft - hours 18,000ft - 20min 20,000ft - 5-12min pg. 22 professoraxe l