1.Problem Definition

Need Statement:

A dart launching gun or toy is usually manual, a user needs a semi-automatic launching gun for fun.

1.1 Question and answer

        Table 1: Questions and answers

Sr No.	QUESTIONS	ANSWERS	OBJECT/FUNCTION/CONSTRAINT
1.	Should the machine be automatic or semi-automatic?	Semi automatic	Objective
2.	What should it launch?	A dart	Function
3.	where does the bot store the darts?	magazine	Function
4.	How many darts should be launched in one round fire?	Nearly 6	Constraint
5.	What should be the dimensions?	36cm x 39cm x 39cm	Constraint
6.	Weight of the machine?	Should be less than 5kgs	Constraint
7.	Should the machine be user-friendly?	Yes	Objective
8.	Should the target point be fixed?	No	Objective
9.	How much should be the cost of the machine?	Not more than 5000	Constraint
10.	what should the machine body stand on?	tripod stand	Function
11.	Should it be portable or fixed?	It should be portable, small, and convenient to carry	Objective
12.	What should be the speed of the dart?	At least 22km/hr	Constraint
13.	What should be the range?	approximately 20 feet	Constraint
14.	How long should the machine work?	It should work for 2hrs continuously	Constraint
15.	Should it indicate the end of darts?	It should indicate if there is no dart in the machine	Function
16.	Should it be durable?	Yes	Objective
17.	Should it launch at an angle?	Yes	Function
18.	Should the dart be shot continuously?	Yes	Function
19.	This device is suitable for which age group?	6-12 years	objective

1.2 Basic survey and requirements:

          Table 2: Observation from a literature survey

Sl.no.	Observation from Surveys	Requirements
1.	Cost	Should be built with minimum budget
2.	Portability	It should be portable, small, and convenient to carry
3.	Duration of work	It should work for 2hrs continuously
4.	No. of darts to be thrown	Nearly 6
5.	Type of machine	Semi automatic

1.3 Identifying objectives:

        Table 3: Objectives identified

Sl. No.	Objectives
1.	Machine should be semi automatic
2.	Machine should be user-friendly and easy to use
3.	Machine should be portable, small, and convenient to carry
4.	Machine should be durable
5.	Machine should throw the dart at the accurate point

Problem definition 1.1

Design a semiautomatic dart-throwing machine, which is easy to use, durable, portable, convenient to carry, and should throw the dart at the accurate point.

1.4 Identifying constraints:

    Table 3: Constraints identified

Sl. No.	Constraints
1.	Machine should have dimension 36cm x 39cm x 39cm
2.	Weight of machine should not exceed 5kgs
3.	Cost of the machine should not be more than 5000 rupees
4.	Speed of the ball should be at least 22km/h
5.	Range should be less than 20 feet
6.	Machine should work for at least 2hrs
7.	Nearly 6 darts should be launched in one round

Problem definition version 1.2:

Design a semiautomatic dart launching machine, which is easy to use, durable, portable, and should able to throw at least 6 darts per min. The machine should not exceed the weight of 5 Kgs, the cost of the machine should be less than 5000 rupees, should have the dimension of 36cm x 39cm x 39cm, should be able to throw the darts with at least 22km/h, should at least work continuously for 2hrs, should have the range less than 20 feet.

1.5 Establish functions:

    Table 3: Functions identified

Sl. No.	Functions
1.	It should launch a dart
2.	The darts are stored in the magazine
3.	Machine should stand on tripod stand
4.	It should indicate if there is no dart in the machine
5.	Machine should be able to launch a dart at different angles

Problem definition version 1.3:

Design a semiautomatic dart launching machine, which is easy to use, durable, portable, convenient to carry, and should throw the dart at the accurate point. The machine should not exceed the weight of 5Kgs, the cost of the machine should be less than 5000 rupees, should have the dimension of 36cm x 39cm x 39cm, should be able to throw the dart with at least 22km/h, should at least work continuously for 2hrs, should have the range less than 20 feet. the darts are stored in the magazine and also it should be able to indicate if there is no dart in the machine and launch at different angles.