imeche design challenge 2016 specification

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IMechE Design Challenge 2016 – Release 1 03-06-15 Tony Broad [email protected] Page 1 IMechE Design Challenge 2016 LINE LAUNCHER Date 16 / 03 / 2016

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Page 1: Imeche Design Challenge 2016 Specification

IMechE Design Challenge 2016 – Release 1 03-06-15 Tony Broad [email protected] Page 1

IMechE Design Challenge 2016

LINE LAUNCHER

Date 16 / 03 / 2016

Page 2: Imeche Design Challenge 2016 Specification

IMechE Design Challenge 2016 – Release 1 03-06-15 Tony Broad [email protected] Page 2

Contents

Introduction

Competition Conditions

Regulations

1 Device Operation

2 Construction

3 Costing

4 Competition Procedure

5 Heats and Finals

6 Rules for Poster

7 Rules for Presentation

8 Rules for Peer Review

9 Enforcement of Rules

10 Prizes

11 APPENDIX

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Introduction

Line Launcher

This will be the 9th Annual Undergraduate Design Challenge organised by the Institution of Mechanical Engineers. The challenge is open to teams of up to 5 students on the first year of an engineering course at university.

A Line Launcher is a device used to fire a rope from one ship to another at sea or for water rescue. The challenge is for teams to design, build and test a small scale indoor device to fire a squash ball attached to a line over a distance up to 6m. A target will determine which device delivers consistent accuracy and precision.

The design will principally deal with energy storage and projectile trajectory. There are many methods of firing projectiles; such devices require a controlled and safe method of energy storage with a reliable release mechanism.

The challenge will be in four parts, each part will be awarded separate prizes

1 Work in teams to design, build and test a launcher to compete with other teams

2 Produce a poster to publicise the teams’ work. The poster is a demonstration of the team’s ability to sell their design solution.

3 Give a short presentation explaining the design and development of the device 4 Submit a peer review where all students have the chance to vote for the best engineered

solution to the problem

In the spirit of the competition it is expected that the device be designed, developed and manufactured by students within the facilities of their university. Any member of the team should have good understanding of the design principles, theories, manufacturing methods and materials used.

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Competition Conditions:

A firing range will be set up in an indoor space i.e. lecture theatre, with a firing line and target area. A Safe Firing Area will be outlined up to 2m behind the firing device. The target area (Figures 1 and 2) will be a 600 x 600 mm rectangular 3 x 3 wire grid raised 450mm from the table. Scoring will be judged by the grid space the ball first passes through on their target. Range is the distance from the device firing line (the front edge of the mounting base) to the centre of the highest scoring region of the target. (Figure 1)

1 3 1

2 6 2

1 3 1

To replicate ‘ship to ship’ there will be will be a pair of tables approx. 1500 x 750mm. The base and target will fit between the guide rails allowing the base and target to be clamped in any position on the tables. (Figure 2)

Figure 2 firing range layout

Figure 1 target area

Target Area / Points Scored

BASE

Firing Line

RANGE 2-6 METRES

WORKING ENVELOPE

400 x 400 x 400mm

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Devices shall be mounted to a base measuring no more than 400 x 200 x 20mm thick. Your base will slide between the guide rails which will be set with the inside faces 200mm apart to suit the base dimensions. Indexed holes will allow simple clamping and will be provided at the event. . The 25mm spaced holes in the guide rail will be threaded and have clamp bolts to ensure easy clamping of the base.

Figure 3 Base Location detail

CLAMPING BOLTS (ANY HOLE)

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Figure 4 line attachment to yellow dot squash ball (loop slackened for clarity)

Balls must be put into a projectile trajectory by the device which cannot be hand-held. Balls and lines will be given at the event and secured as shown in Figure 4. A similar loop at the opposite end will be used to attach the line to the device within the working envelope

The ball is to be a YELLOW DOT squash ball (provided at the event)

Line will be fishing braid brand Sufix Duraflex 7.0 Kg (Amazon.co.uk) 8m long and will be supplied at the event by the organiser and must be used.

Length of line will be sufficient to prevent the line length becoming taut and thus controlling range, excess line cannot be added, cut off or tied to a specific length

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Regulations

1 Device Operation 1.1 Each team shall produce one single device. 1.2 Devices must be regarded as safe and reasonable as judged by the member/s of staff

responsible for the team/s, consideration should be given to guarding if there is risk of entanglement or entrapment

1.3 Safety glasses must be worn by the operator just prior to arming and at all times during the heats where a device may fire.

1.4 Devices shall be fixed securely to the mounting base, any device that ‘breaks free’ from the base during a competing heat or final will not receive any points for that attempt.

1.5 All devices must be fitted with a safety mechanism which prevents the device being accidentally fired once armed.

1.6 Devices must be fired remotely via any means of electrical switching up to 2m distance from the device.

1.7 Pressurised air/gas systems are allowed but must be declared safe and reasonable by the participating university and must contain parts capable of withstanding a safe working pressure (SWP) of 5.5 Bar maximum, teams will provide data sheets/specifications for parts to prove suitability.

1.8 No person is to be forward of the safe firing area during a heat. 1.9 No practice firing of any projectile is permitted, the device may however be tested for all

other functionality. 1.10 No explosive charges or combustion can be used

2 Construction 2.1 Line must be attached securely to the device and be contained within the working envelope

prior to firing 2.2 The device must fit within a maximum working envelope of 400 x 400 x 400mm at all times

during competition, even during firing. 2.3 The ball exit position of the device shall not be further forward than the firing line. 2.4 Devices should be manufactured using generally available facilities and materials using

processes that students can themselves work with under minimal guidance 2.5 2D profiling i.e. laser/water jet or similar is permitted 2.6 Rapid prototyping techniques (i.e. 3D printing) are permitted costed at 10p per gram

3 Costing 3.1 A maximum budget of £20 per team is allowed. 3.2 Proprietary items may be purchased at as new retail price from reputable suppliers so that

any other team should be able to purchase the same parts at the same price. Receipts for any parts over 20p should be available for judging panel if required. Parts from existing firing devices (i.e. triggers, barrels, breaches) are not permitted. Use of standard stock materials such as sheet,bar,billet etc. must be costed by their fraction of the stock material cost i.e. The cost of the line and balls can be excluded, these will be provided at the competition by the organisers.

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3.3 Parts of value less than £0.20 should be included on the parts list but do not need to be included in the total price (considered free). Components in-kind or provided by the University must be included in the parts list.

4 Competition Procedure 4.1 All devices must be available for scrutineering prior to commencement of the competition 4.2 Breach of any rule during competition will forfeit that heat 4.3 The range will differ for each heat. All teams will have the same range per heat and will fire

twice per attempt. 4.4 The top scoring three teams will qualify for the 3 shot final over the same range 4.5 Clear instruction on heats and finals will be given at the event. 4.6 Organisers will announce the target range 3 minutes before a heat, upon announcement

participating teams will have those 3 minutes to position their device on the firing line and be armed but with safety device in place - operators will raise their hand clearly to show readiness within the 3 min period, if all operators are ready to fire, a heat can commence.

4.7 Once ready, teams will be instructed to “RELEASE SAFETY” operators will release the safety mechanism and return to the safe firing position, then on a count of 3,2,1, FIRE ! each team will fire their device

4.8 Once all devices have fired (or been made safe if not fired) judges will record the scores and teams will be instructed to retrieve ball and line

4.9 Once all balls and lines are retrieved, teams will have 2 minutes from a given signal to re-load and safely arm devices before the second shot, teams not ready will forfeit that pending throw

5 Heats and Finals 5.1 There will be three heats over three different ranges, all teams will fire over the same

ranges set 5.2 A device that fires prematurely at any time during the competition will forfeit its next

pending attempt 5.3 If a device fails to fire within 10 seconds of the FIRE command during its heat will not score

points for that pending heat 5.4 If a ball fails to score by bouncing off the top of the target (as identified by the judge)

another attempt will be allowed 5.5 Top three scoring teams will go to the final - In the event of a drawn score to decide

finalists the range will be re-set and a single shot run off will take place with a smaller 450 x 450mm 3x3 target raised the same 450mm from the table. This will be repeated at a different range until one team outscores the other.

5.6 The final will be three shots over three different ranges, if there is a draw the smaller target will used (as in 5.5) and the range altered again. This will be repeated at a different range until one team outscores the other.

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6 Rules for the Poster

6.1 - Each University may enter only one team for the poster competition. 6.2 - The poster should be A1 size in portrait format. It should clearly display the logos of the team’s University and of the IMechE. 6.3 - The poster should concisely describe the device, how it operates and the engineering principles it is based on. It should include, but is not limited to:

Sketch, 3D visualisation or 2D technical drawings representing the device. Text to explain important features shown in the drawings. Details of how and why the device works, using diagrams if necessary. Brief details of the team’s members. Summary of costing

6.4 - A summary of costing should be included. 6.5 - The poster will be assessed and judged by the IMechE Engineering Director or appropriate designate.

7 Rules for the Presentation 7.1 - Each University may enter only one team for the presentation competition. 7.2 - Presentations should be submitted on arrival at the final event. 7.3 - The maximum length of the presentation is five minutes plus typically two minutes for questions.

It can be delivered by any number of team members, from one person to all members of the team. Computer and projector facilities with common software will be available.

7.4 - The presentation should include, but is not limited to: The principal features of the final design. The engineering science that underpins the device. The steps the team followed to arrive at the design. The cost of the final design and if/how costs influenced the final design

7.5 - The team will be required to answer questions on their design. 7.6 - The presentation will be assessed according to the marking scheme in Appendix B, and will be

judged by a representative of each University. Universities will not mark their own presentation.

8 Rules for the Peer Review 8.1 - Teams will clearly display their device along with the costing sheet in the designated spaces

provided. 8.2 - All teams will then review (without touching or handling devices) all the other participating teams. 8.3 - Teams are asked to select and rank the top three designs they believe to have the best engineered

solution and vote for them by completing the slip an example of which is shown in Appendix C. 8.4 -There will be only one voting slip for each team, competitors may not vote for their own University. 8.5 -The team with the most first votes will win the peer review. 8.6 - In the event of a tie second votes (and then third votes) will be counted. If a tie remains then prize

money will be split equally amongst the winning teams.

9 Enforcement of the Rules At the event:

Judges reserve the right to change any rules if appropriate to account for unforeseen circumstances

9.1 - On matters relating to test equipment and procedure, the authority will be the chair of the

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Institution of Mechanical Engineering Design Challenge organising committee or his/her delegated representative(s).

9.2 - The panel of judges consists of a representative from each of the participating Universities and the IMechE.

9.3 - The decisions of the panel of judges will be final. 9.4 - In addition to the rules for the final outlined above, Universities are responsible for internally

ensuring that the spirit of the competition is adhered to during the design and make stages. 9.5 - Appeals – If a team wishes to lodge a complaint, query a procedure or rule infringement they must do so through the chair of the institution of Mechanical Engineering Design Challenge organising committee or his/her delegated representative(s).

10 Prizes

10.1 Cash prizes will be awarded to the two teams achieving the highest score in the 3 shot final. There will be a separate prize for the poster element of the challenge.

Team prize values for the line launcher challenge:

1st prize: £500

2nd prize: £300

To be distributed equally amongst the team members.

10.2 The winning team’s institution shall be awarded a trophy by the Institution of Mechanical Engineers, for safe keeping for one year (or until the next Challenge, whichever comes first).

10.3 The team judged to have produced the best poster shall be awarded a further cash prize of £100, again, to be divided equally between the members. The “poster prize” shall be awarded independently of a team’s performance in the heats or final

10.4 The team judged to have given the best presentation shall be awarded a further cash prize of £100, again, to be divided equally between the members. The “presentation prize” shall be awarded independently of a team’s performance in the heats or final

10.5 The team judged to have the best designed device in the Peer Review Competition will receive a Cash prize of £200.

10.6 Certificates will be awarded to all winning students and the winning institute.

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APPENDIX A – Poster judging criteria

Weight (%)

Visu

al im

pact

Compliance with rules – size (A1) and orientation (portrait) 15

Obvious information on the university represented (logos) and the team members’ names 15

Good use of colour, layout, text and space to convey meaning 15

Tech

nica

l Con

tent

Clear but brief textual description of the competing device 15

Clear diagram(s) – sketch, rendering or CAD model – of the device 15

Evidence of the engineering science underpinning the device 15

Summary costing of major components of the device 10

100

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APPENDIX B – Presentation judging criteria

Weight

(%)

Pres

enta

tion

styl

e

Audience Engagement 15

Quality of spoken presentation (well structured, fluent, clear etc.) 15

Quality of visual aids (clear and easily readable, do not duplicate spoken presentation etc.) 15

Tech

nica

l Con

tent

Principal features of the final design 15

Steps followed to reach the final design, including costing of the device 15

Engineering science that underpins the final design 15

Answer to judges questions 10

100

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IMechE Design Challenge 2016

APPENDIX C – Peer review voting slips

…#…………………………………………………………………………………..……………

Team voting:

We have reviewed the other teams’ designs and would rank the top three “best designs”as:

1st

2nd

3rd

…#…………………………………………………………………………………..…………

Team voting:

We have reviewed the other teams’ designs and would rank the top three “best designs” as:

1st

2nd

3rd

…#…………………………………………………………………………………..……………

Team voting:

We have reviewed the other teams’ designs and would rank the top three “best designs” as:

1st

2nd

3rd