Airframe.pdf

S PHILIPPINE STATE COLLEGE OF AERONAUTICS AIRCRAFT MAINTENANCE TECHNOLOGY CAREER PLACEMENT EXAMINATION METALLIC STRUCTURES ( SHEET METAL). This construction uses stressed skin to support almost all...

S PHILIPPINE STATE COLLEGE OF AERONAUTICS AIRCRAFT MAINTENANCE TECHNOLOGY CAREER PLACEMENT EXAMINATION METALLIC STRUCTURES ( SHEET METAL). This construction uses stressed skin to support almost all loads much like an aluminum beverage can.. It consist of determining the number of rivets required the side style of nvet to be use, its matenal temper condition and strength, distance of nvet holes and nvets hommoodooolpatch and spacing of the rivet through-out the repair.. Itis a filler patch that is flush to the skin when applied it is supported by and riveted 1o a reinforcement plate which is, in turn, riveted to the inside of the skin.. This type of cutting tool for Sheet Metal Construction and Repair have straight blades with cutting edges sharpened to an 85* angle. Available in sizes ranging from 6 to 14 inches, they cut aluminum up to V16 of an inch. Also, can be used for straight cutting and large curves. a. Straight snips, or sheet metal shears b. Aviation Snips  c. Files d. None of the above 6. What size of the rivet do we need to join these 2 pieces of metal? e {$} 1= 00 a. RD = 4/32 simplest form 1/8, RL = 4/16 simplest form 1/4 b. RD=6/32,RL =616 c. RD =532, RL = 5/16 d. Both A and B is applicable 7. flumdnmhoaduudmmndmmwmumm not important. factor and streamislining a. Flat Head Rivet (AN442) b. Round Head Rivet (AN430) ¢ Universal Head Rivet (AN470 or MS20470) d. of the above None 9. uflwmmumm.bmmmflwmhmmm. and is measured from the rivet center to the rivet center. a. Rivet b. Transverse pitch c. Edge Distance d. No of ne the above 1o.mmucmmmwmmflmmww mummmmam.mmm  a. Flat Head Rivet (AN442) b. BrazierHead Rivet (AN455) ¢. Round Head Rivet (AN430) d. None of the above 12.This type is stress that resists the forces which pull it apart. For example, engine thrust pulls the aircraft forward, but air resistance holds the aircraft back. a. Shear 13. This layout Tool for Sheet Metal Construction and Repair consists of a steel scale with three heads that can be moved to any position on the scale and locked in place. The three heads are a stock head that measures 90° and 45° angles, a protractor head that can measure any angle between the head and the blade, and a center head that uses one side of the blade as the bisector of a 90* angle. 14, This type of Marking Tool for Sheet Metal Construction and Repair are the preferred method of marking lines and hole locations directly on aluminum, because the graphite in a No. 2 pencll can cause corrosion when used on aluminum. 15.This type of rivet head used throughout the interior aircraft structure where special rivet are not required and in the interior surface where skin friction is not critical. Also This type of rivet is about twice the diameter of the shank and is slightly flatted on the top. a. Braz ier Head Rivet (AN455) b. Universal Head Rivet (AN4 or MS20470) 70 c. Cou Head nte Rivet (AN426 rsu OR MS20426) nk d. None of the above 16.A well designed rivet joint will subject the rivets to: a. compressive loads c. torque loads b. tension loads d. shear loads 17.Rivet gauge, or transverse pitch is the distance between the: a. heads of rivets in the same row c. center of adjacent rivets in the same b. center of rivets in adjacent rows row d. distance of rivets to the edge of the material 18.The primary alloying agent of 2024-T36 is indicated by the number: a2.20 c.2 b.24 d. 2024 19.The cantilever wing uses: a. the skin to carry most of the c. external struts or wire bracing load to the wing butt b. no external bracing d. none of the above 20.What is the purpose of refrigerating 2017 and 2024 aluminum alloy rivets after heat treatment? a. To retard age hardening c. To relieve internal stresses b. To accelerate age hardening d. To soften the metal 21.Under certain conditions, type A rivets are not used because of their: a. low strength characteristics b. tendency toward embrittiement when subjected to vibration. high alloy content d. low corrosion resistance 22.MS20426AD-6-5 indicates a countersunk rivet which has: a. an overall length of 5/16 inch b. an overall length of 5/32 inch c. a shank length of 5/16 inch [excluding head) d. a shank length of 5/32 inch (excluding head) 23 Annealing of aluminum _______. a. increases the tensile strength. b. makes the material brittle. ¢. removes stresses caused by forming d. None of the Above 24.What is likely to occur if unhydrated wash primer is applied to unpainted aluminum and then about 30 to 40 minutes later a finish topcoat, when the humidity is low? a. a dull finish due to the topcoat "sinking in" to primer that is still too soft. b. corrosion. c. a glossy, blush-free finish. d. none of the Above AIRCRAFT STRUCTURES 1. Longitudinal (fore and aft) structural members of a semi monocoque fuselage are called: a. spars and nbs C. spars and stringers b. longerons and stringers d. bulkheads and longerons 2. The monocoque fuselage relies largely on the strength of a. bulkheads and longerons ¢. skin or covering b. longerons and formers d. spars and stringers 3. The vertical flight of a helicopter is controlied by a. collective pitch changes b. cyclic pitch changes ¢. increasing the RPM of the main rotor d. decreasing the RPM of the main rotor a-angle-of-attack c-longiudinal dhedral angle b-angle oluncdence d-lateralehedral-angle 5. Movement about the longitudinal axis (roll) in a helicopter is effected by movement of the  a. cyclic pitch control c. tail rotor pitch control b. collective pitch control d. none of the above 6. The purpose of the vertical fin is to provide a. lateral stability c. longitudinal stability b. directional stability d. none of the above 7. Which statement is true regarding a cantilever wing? a. It requires only one kft strut on ¢. No external bracing is each side needed b. It has nonadjustable lift struts d. It has adjustable lift struts 8. Main rotor blades that do not cone by the same amount during rotation are said to be outof a. balance c. track b. collective pitch d. cyclic pitch 9. The dihedral angle of a wing may be measured by placing a straightedge and level protractor on the a. wing chord c. front spar b. wing root d. rear spar 10.The angle of incidence of an airplane a. does not change in flight b. affects the dihedral of the wings c. is that angle between the relative wind and the chord of the wing d. is an angle formed by the chord line of a wing and the relative wind 11.The purpose in checking main rotor blade tracking is to determine the a. extent of an out of balance condition during rotation b. flight path of the blades during rotation. relative position of the blades during rotation d. none of the above 12.What is the purpose of the torque kinks attached to the cylinder and piston of a landing gear oleo strut? a. Limit compression stroke b. Maintain correct wheel alignment c. Hold the strut in place d. Reduce torque produced by the landing gear 13. Aircraft tire pressure should be checked: a. using only a push on stick-type gauge having 1-pound increments b. atleast once a week or more often c. as soon as possible after each flight d. Every 100 hr, 14.What should be checked when a shock strut bottoms during a landing? a. Fluld level b. Air pressure c. Packing seals for correct installation d. Shock Strut filter 15.The purpose of the pressure regulator in a hydraulic system is to: a. Prevent failure of components or rupture of hydraulic lines under excessive pressure. b. Regulate the amount of fluid flow to the actuating cylinders within the system. ¢. Maintain system operating pressure within a predetermined range and to unioad the pump d. Regulate hydraulic pressure lines on selected systems 16.Which is a characteristic of petroleum base hydraulic fuid? a. Nonflammable under all conditions b. Flammable under normal conditions c. Compatible to natural rubber seals and packings d. High freezing point 17.Characteristics of MIL-H-8446 (Skydrol 500 A & B) hydraulic fluid are: a. blue color, phosphate ester base, fire resistant, butyl rubber seals b. light purple color, phosphate ester base, fire resistant, butyl rubber c. light green color, phosphate ester base, fire resistant, butyl rubber seals d. light red color, phosphate ester base, fire resistant, butyl rubber seals wwmmmw:-mmmmwmmmumu a. Check valve c. Selector valve b. Orifice check valve. d. Drain Valve 19. Which instruments are connected to an aircraft's pitot static system? 20.A fully integrated autopilot controls the aircraft around how many axes? a. Four c. Three b. Two d. Five 21.An aircraft antenna installation must be grounded a. to the airframe cto b. to the radio rack d. 1o the engine 22.VHF radio signals are commonly used in a. both VOR navigation and ATC communications b. ATC communications c. VOR navigation d. None of the above 23. Dutch roll, a combination yawing and rolling oscillation that affects many swept wing aircraft, is counteracted with a. a yaw damper system c. a flight director system b. an aileron damper system d. a pitch damper system 24. Which channel of an autopilot detects changes in pitch attitude of an aircraft? a. Alleron c. Rudder b. Elevator d. Flaperon 25.A typical large transport aircraft fuel manifold system allows how many of the following? 1. All tanks can be serviced through a single connection 2. Any engine can be fed from any tank 3. All engines can be fed from all tanks simultaneously 4. A damaged tank can be isolated from the rest of the fuel system a. Three c. Four b. Two d. One 26.What is used in many aircraft to prevent bubbles in the fuel after it leaves the tank when atmospheric pressure is lower than fuel vapor pressure? a. Air fuel separators ¢. Anti-foaming additives b. Boost pumps d. Engine driven pump 27. What is one purpose of a fuel tank vent? b. To decrease tank internal air pressure c. To decrease fuel vapor pressure d. To maintain atmospheric pressure e. To maintain fuel vapor pressure 28. Which gas is used for purging an aircraft fuel tank? b Carbon monoxide d. Carbon dioxide ¢ Helum or argon o. Carbon oxide 29. A capacitance type fuel quantity indicating system measures fuel in a. pounds per hour c. gallons b. pounds d. liters 30. To prevent vapor lock in fuel ines at high altitude, some aircraft are equipped with a. vapor separators ¢. direct injection type carburetors b. booster pumps d. engine pump 31.The pole pieces or shoes used in a dc generator are a part of the: a. armature assembly c. brush assembly b. field assembly d. commutator assembly  ¢. crimand pi ng solde ring a. crimping d. none of the above b. soldering mwwmm n.mwwummumum output of the dc c. resistance in the rolor windings a. voltage d. the ground side of a circuit exciter b. speed of the alternator 34. Aircraft fuse capacity is rated in a. volts c. ohms b. amperes d. watt umpwm u.wdmmmmummnmw sigtonal sound? a mwwmwmm b. MWMWGMW!M"W c w‘gwmmwmmm d. Mwmwmmmm 36.The purpose of antiskid generalors is to: s a. measure wheel rotational speed and any speed change hmwmww m ¢. indicate when a tire skid occurs d. indica the skidte point.flll. 37.Sblwmwlbmlmwflymhb.9mww“wm a. is start toing occur b. first affects the outboard portions of the wings. Is imminent d. reach the angle of attack m u.awmmmmmsm,mmmbmm,mm position of which of the following? a. Allerons, elevators, speed brake, and steerable fuselage landing gear b. Elevators, speed brake, flaps, and stabilizer trim  tors, flaps, and speed brake ¢. Aerodynamically actuated slats, eleva W‘W M M MWMWVW G.WM ms are ordinanly charged with 30, Built-in aircraft fire-extinguishing syste c. halogenated hydrocarbons and a. sodium bicarbonate and nitrogen nitrogen b. carbon dioxide and nitrogen d. sodium carbonate and carbon dioxide  NON- METALLIC STRUCTURES ( COMPOSITE). These reinforang materials are used when a high temperature application is needed and this form of composite retains the strength and flexibility at temperatureof 2,200 F a.)Aramid Fiber b.)CarborV Graphite Fiber ) Fiberglass Fiber d.)Ceramic. How many times does the tensile strength of Keviar composite is much better than the aluminum? a) 2tmes b) Stimes c.)8times d) 10times fatigue resistance. a) Fiberglass fiber b) Aramid fiber c) Carbon/graphite fiber d) Boron. This uses two or more layers of different reinforcing materials that are laminated together. a) Laminate b) Interply c.)intraply d) Unidirectional. This fiber orientation in which all of the major fibers run in one direction, giving strength in that direction isknownas_______ 7 a) Unidirectional b) Bi-directional c.)Mat d) Satin fiber. This type of resins use heat to form the part into the desired shape and it can be used in more places, as long as the temp. does not exceed to 75F. a.) Thermoplastic b.) Resin ¢.) Thermoset d.) Hardener  wmmmmmd 7. nammwdww mm. d Mmmdmmww-w M »MMWW 8. AMM&W»MNW surface attachments. a.) Additives b.) Adhesive c.) Resin d.) Hardener mwnmbmw oA)mwdmmnmm MNWdN lO)m*leMflmM.mu appi ca matera e n specificatio l bl. 12.)ummmmummummu-mwmwmmm MJMWNMMWMbm. a) Hand or Wel layup b.) Fitament Winding c.) Fiber placemen or tape laying t d.) Resin Transfer Molding 13. These are probably the most widely accepted form of applying heat 1o a composite component for repair work using thermocouple and controlier bonding machine koo o regulate the amount of heat. a.) headlamps b.) heat guns c.) heat blankets d.) Thermocouple  ndmnhmnlnmmmm M,Anylmovmmhoncnnyuu muum nm-mmbnwmm a.) Sealant Tape b.) Peel ply e c ) Releasfilm d.) Vacuum bagging film mmm 1s.hmmmmuwmmnm.’ummn ww wm un mb um. mm.mnuwbwb 16. A method of curing used with a manually operated controlier and requires the technician to make the adjustments manually at specific intervals. a.) Heat curng b.) Step curing c.) Room Temperature d.) Ramp and soak 17. This method of curing process is normally performed on parts which are lightly loaded or 18.A ‘mwmnmmp'wmaymmnm. b.) Fitament c.) Fiber placement or laying d)RunTmthol:: 19. A manufacturing method in which the object is placed into a plastic bag and the air is M,mnwbmmwmbmmnmu a) Compression mokding b.) Resin Transfer molding ¢€.) Vacuum Bagging d.) Hand or wet lay up 20. This heating equipment mrfl&wmmu\rnmmm to accelerate the cure of room temperature a Gun b.) Heat Lamps ¢.) Heat Blanket d) Vacuum Bagging wuawmnmmmummmwbumm a.)b.) Impact Cosmeticdamage defects c) cracks d ) delamination 22. This method of inspection locates flaws by lemperature variations at the surface of a damaged part. Heal is applied 10 the part then the temperature gradients are measured using an infrared camera or film 24. This method of inspection used a laser kght source and a special infrared camera film system for the suspected part which 1o be heated and then photographed. 26. This method used for detecting cracks in metallic surfaces, however, it should not be used mmmmuwmmdnmmwmwb zr.Amemmw.mmmmu.md wdm MMM.WMnwa.mm.m  wmhham: 31 Thommolmmuaflmdnm“mnhlw a. pot life b. service life c. shelf ife d. none of the above 32 mummwmmmwmmpmunmb absorb excess resin during curing called? a. Release c. Breather b. Bleeder d. none of the above 33. wnmdmum\gmmammcdumwu(mm composites? 1. High tensile strength 2. Flexibility. 3. Sufiness. 4. Corrosive effect in contact with aluminum 5. Ability to conduct electricity.