The Effect of Mass of Helicopter and Length of Hanging Mass from Helicopter on Acceleration

The Effect of Mass of Helicopter and Length of Hanging Mass from Helicopter on AccelerationAbby Bault Center LineMegan Satawa Warren Woods Tower

TABLE OF CONTENTSConclusionErrors MadeReal World ApplicationFurther ResearchReviewQuestionsBackgroundProblem & HypothesisMaterials & ProceduresData CollectedOdd Trials/DataStatistical Tests

BACKGROUNDLiftThrustDragWeight

LIFTForce that causes helicopter to move upBernoulli PrinciplePressure increases as speed increasesWingsAir flows around body: changes pressure and velocityThrough center of pressure

THRUST AND WEIGHTThrust moves helicopter forwardMust be equal to weightWeight is force of gravity pulls down

DRAGForce that opposes motionCreated by contact with fluidSkin friction: interaction between solid and gasActs through center of pressure

BACKGROUND

PROBLEMTo determine the effect of mass of helicopter and distance of hanging mass from helicopter on the acceleration of the helicopter.

MASS

This slide and the next one are slides that me and Najah had last year that just add to describe what we mean by each factor before introducing the hypothesis. I totally forgot how animations work, but I was hoping you know how to make it so the slide starts with just the picture, and then as we talk about what we mean by the mass we are measuring, the circle can pop up. Then after that, we can have the arrpow pop up so we briefly note that we are neglecting the mass of the string/rope.9

DISTANCE

This one is pretty much the same idea as the mass one. It can start with just the helicopter pic and then have the arrow come up when we discuss what measurement we mean by distance.10

HYPOTHESISIf the distance of the hanging mass from the helicopter and the mass of the helicopter are the greatest then the acceleration will be the slowest.

DESIGN OF EXPERIMENTAL VALUESMass (g)Distance (m)-Standard+-Standard+2530350.000.050.10This just introduces what our values are so the audience understands the small scale the experiment was performed on12

MATERIALSTI-nSpireMeter StickPropel RC Toy HelicopterCraft StringPropel RC ControllerDifferent MassesVideo Recorder Timing Device18 AA Batteries

PROCEDURESRandomize trials and set up camera and meter sticksFly the helicopter and record the flightAnalyze the video using LoggerProRecord the acceleration

VIDEO

DATA COLLECTED

OBSERVATIONSOutline trials with specific observations HERE

ANALYSISTwo-Factor DOEMass and string length

STANDARDSJust needed a slide with the table of standards 19

EFFECT OF MASSMass(-) 25 g(+) 35 g1.8761.4241.3381.9980.9811.597Grand Average: 1.398Grand Average: 1.673

EFFECT OF DISTANCEDistance(-) 0 m(+) .1 m1.2692.031.7552.1831.021.523Grand Average: 1.348Grand Average: 1.912 21

INTERACTION EFFECTMass(+) 35 g(-) 25 gDistance(+) .1 m1.3112.035(-) 0 m1.381.416

CONCLUSIONLack of statistical significant Based of D.O.E analysis

Effect or InteractionEffect Value2 x Range of StandardsGreater than?Effect of Mass0.1389.138noEffect of Distance0.2829.138noInteraction Effect of Mass and Distance0.319.138no

CONCLUSIONScientifically significant resultsBased on dot plot of effects

MassDistanceFor this we could maybe have the red lines appear individually as we explain what each one means. Then we have the blue line pop up and explain that the big gap between mass and distance mean that distance and the interaction effect were probably scientifically significant even though they weren't statistically significant.24

CONCLUSIONHypothesis: Accepted

ERRORS MADEWrong weight on helicopter for DOE 1Trials redoneLack of operating experience

Design FlawsInconsistent helicopter battery power

FURTHER RESEARCHDifferent types of helicoptersDifferent factorsHumidity, air flow(turbulent or laminar)jkda

real world applicationMedEvac FlightsEmergency Rescue

QUESTIONS?