A feature of a symmetrical airfoil is thatQuestion 9Select one:a.It is in a zero lift condition when at 0 degrees angle of attackb.It can produce normal lift at negative angles of attackc.There are large movements of the centre of pressure as the angle of attack is variedd.It cannot be used in the horizontal plane

The direction of a relative airflowQuestion 8Select one:a.Depends on thrustb.Is in the opposite direction to the rotation of the propellerc.Is in the opposite direction to the motion of an aerofoild.Is in the opposite direction to the drag forceClear my choiceQuestion 9Not yet answeredMarked out of 1.00Flag questionQuestion textA feature of a symmetrical airfoil is thatQuestion 9Select one:a.It is in a zero lift condition when at 0 degrees angle of attackb.It can produce normal lift at negative angles of attackc.There are large movements of the centre of pressure as the angle of attack is variedd.It cannot be used in the horizontal planeClear my choiceQuestion 10Not yet answeredMarked out of 1.00Flag questionQuestion textA high T/C ratio is generally a feature ofQuestion 10Select one:a.Low speed aircraftb.High speed aircraftc.Dihedrald.Wing wash-inClear my choiceQuestion 11Not yet answeredMarked out of 1.00Flag questionQuestion textAn aerofoilQuestion 11Select one:a.Must have a cambered cross-sectionb.Must have a symmetrical cross-sectionc.Must be streamlinedd.Must have reflex camberClear my choiceQuestion 12Not yet answeredMarked out of 1.00Flag questionQuestion textThe distance from wing tip to wing tip along the lateral axis is theQuestion 12Select one:a.Chordb.Spanc.Aspect ratiod.DihedralClear my choiceQuestion 13Not yet answeredMarked out of 1.00Flag questionQuestion textWhen a particular aeroplane is viewed in plan (from above), the leading edge of the wing forms an acute angle with a line perpendicular to the longitudinal axis this is known asQuestion 13Select one:a.The angle of incidenceb.The angle of attackc.Sweepbackd.DihedralClear my choiceQuestion 14Not yet answeredMarked out of 1.00Flag questionQuestion textThe chord line isQuestion 14Select one:a.The straight line joining the leading and trailing edges of the airfoilb.The line drawn halfway between the upper and lower surfaces of an airfoilc.The distance from the leading edge to the trailing edge of an airfoild.The area between the straight line joining the leading and trailing edges of the airfoil and the line drawn halfway between the upper and lower surfaces of an airfoilClear my choiceQuestion 15Not yet answeredMarked out of 1.00Flag questionQuestion textIrrespective of the manoeuvres being undertaken, drag always acts parallel toQuestion 15Select one:a.The thrust lineb.The longitudinal axisc.The relative air flowd.The chord lineClear my choiceQuestion 16Not yet answeredMarked out of 1.00Flag questionQuestion textThe centre of pressure of an airfoil is the point along the chord whereQuestion 16Select one:a.The lowest pressure over the top surface is foundb.The difference between upper and lower surface pressures is greatestc.The largest static pressure is foundd.The total reaction force is locatedClear my choiceQuestion 17Not yet answeredMarked out of 1.00Flag questionQuestion textMain-plane dihedral occurs whenQuestion 17Select one:a.The wing tips are positioned higher than the wing rootsb.The wing tips are positioned lower than the wing rootsc.The main-planes are cranked to form a "gull wing"d.The angle of incidence of the wings is greater than that of the tail-planeClear my choiceQuestion 18Not yet answeredMarked out of 1.00Flag questionQuestion textThe ratio of the thickness of the wing to the chord is theQuestion 18Select one:a.Aspect ratiob.Fineness ratioc.Thickness divided by Chord Line expressed as a %d.Chord Line divided by Thickness expressed as a %Clear my choiceQuestion 19Not yet answeredMarked out of 1.00Flag questionQuestion textA decrease in angle of incidence from wing root to wing tip is calledQuestion 19Select one:a.Taperb.Washoutc.Dihedrald.Wing warpingClear my choiceQuestion 20Not yet answeredMarked out of 1.00Flag questionQuestion textThe wing loading isQuestion 20Select one:a.The ratio of lift to aircraft weightb.The ratio of lift and dragc.The same as the load factord.The ratio of aircraft weight to wing surface areaClear my choicePrevious ActivityJump to...

A particular aerofoil is able to produce lift at 0 degrees angle of attack this is because ofQuestion 51Select one:a.The dihedral angle of the wingb.The angle of incidence of the wingsc.The cambered cross-section of the wingd.The aspect ratio of the wing

An aerofoilQuestion 11Select one:a.Must have a cambered cross-sectionb.Must have a symmetrical cross-sectionc.Must be streamlinedd.Must have reflex camber

Which type of symmetry does the letter "X" have?Question 1Select one:a.Line symmetry onlyb.It has both line and rotational symmetry.c.No symmetryd.Rotational symmetry only

When a particular aeroplane is viewed in plan (from above), the leading edge of the wing forms an acute angle with a line perpendicular to the longitudinal axis this is known asQuestion 13Select one:a.The angle of incidenceb.The angle of attackc.Sweepbackd.Dihedral