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The O-wing Experiment

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Chloe Lai

on 27 August 2013

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Transcript of The O-wing Experiment

The O-wing Experiment
The O-wing Experiment
This prezi will explore and present a detailed testing and analysis of the flight of an o-wing glider.

By Chloe Lai

Background Research
Planning Log
On the 21st August: Background research was researched and a hypothesis was made that an increase in fuselage length of the O-wing would increase the flight time.
On the 23rd August: All materials were collected and the dimensions of each O-wing were determined.
On the 24th August: The construction of each O-wing was completed and a draft of the method was made.
On the 25th August: The method was refined and the experiment was performed. Pictures of the experiment were taken.

Aim and Hypothesis
Aim: The aim of this O-wing experiment is to determine the effect of varying straw lengths on flight time.
Hypothesis: The O-wing glider will fly a longer distance and time with a longer straw.
Risk Assessment
1)Straws were obtained and cut to certain lengths to get four different straw lengths using a ruler.
2)The first O-wing glider fuselage length was cut to 9.25cm.
3)The second O-wing fuselage length was cut to 18.5cm.
4)The third O-wing fuselage length was cut to 36cm. Two straws were taped together to achieve this length.
5)The fourth O-wing fuselage length was cut to 53.5cm. Three straws were taped together to achieve this length.
6)To create the O-wing, four identical smaller strips of cardboard was cut measuring 4.2cm by 16cm
7)Another four identical cardboard strips were cut measuring 4.2cm by 27cm to represent the larger O-wing.
8)The identical strips were taped end to end to create an O shape.
9)One smaller and one larger O- wing were taped on the opposite sides of straws (which were of varying length).

Independent and Dependent Variables

The independent variable for this experiment was the length of the straws used for each different glider and the dependent variable was the flight time which was recorded with a stopwatch.
Experimental Controls
Controlled variables included the width and length of the wings, amount of wind (none), temperature, location and force thrown.
Risk Assessment
Paper cuts or effect in the surroundings and scissor cuts may occur during the process.
Discussion of Validity and Reliability
Four trial tests were made for each glider with an averaged result recorded for reliability. The method was valid through controlled, independent and dependent
variables shown through videos and images.
1)The O-wing gliders were held in the middle of the straw.
2)Each was thrown horizontally from a height of 1.5m above ground.
3)Each O-wing glider was thrown at a constant speed and force.
4)Flight time was recorded with a stopwatch by another individual.
5)Four trials was performed for each O-wing of varying fuselage length.

Variables, Validity, Reliability
The independent variable in this experiment was the length of the straws. The dependent variable was the flight time which was recorded with a stopwatch by another individual to improve accuracy.
Validity was ensured in this experiment by having multiple controlled variables and only one independent variable which was the length of the straws. Images and a video have also been included to show that the method has been followed. These factors helped to keep a constant and valid method.
To ensure reliability in this experiment, two individuals were involved, one individual launched the O-wing whilst the other individual recorded flight time using a stopwatch. Four trials were recorded for each O-wing of different fuselage length and an average was obtained for the results.
Accessed: 20/8/13

Accessed: 20/8/13
Accessed: 27/8/13
Accessed: 27/8/13
Accessed: 27/8/13
Accessed: 27/8/13
Video and Images
Measuring 4.2cm as the width for accuracy.
Overlapping length
The O-wing glider is a projectile which was investigated to find the effect of straw length on flight performance. It was made from straws, cardboard, paper and sticky-tape. The tools used included: stopwatch, scissors and a camera. The O-wing glider is a smaller and different version of a typical glider. These instruments do not require propellers or engines to make them glide. The O-wing glider closely indicates how a typical glider can fly through the air at gravity.
These numbers were based on a scale of 1 to 10 for the risk of injury. 1 being very unlikely and 10 being very likely.
As explained in the background research, the O-wing glider is closely related to the large mechanical gliders that humans manage. Both of these work quite the same as both glide through the air, therefore the word “glider”. The O-wing glider can be helpful as a small experiment to test the flight for large gliders. Also known as the “ring wing gliders”, this instrument helps explain the thrust, drag and lift of a “ring wing plane”. Recently, some of these have been similarly constructed such as the "spiroid wing tip" and Bleriot III. These planes’ wings are classified as “closed wings” which is a non-planar wing-planform concept.

Improvements which can be made to the experiment: Improvements that can be made for the experiment include:
•More trials to be tested. This will help to improve accuracy.
•More O-wings to be created so that clearer patterns may be seen in the results.
•Using measurements that have been tested before. This will ensure that results should turn out correctly.
•Using thicker cardboard to prevent any floppiness as the O-wing flies.

The experiment confirmed the hypothesis which stated that: the flight time of the O-wing will increase proportionally with an increase in fuselage length. As seen in the results table, both the flight time and the fuselage length increase. Each of these gliders had a difference of around one second, enough to show that each glider with differing fuselage lengths had an impact on the flight time.
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