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Assignment 3:

[lo 1.10]

Use the sketch in Appendix 1. It is important to give the rocket tail-fins so that it will be able to stand upright for the launch (See Appendix 1). Stick the page onto cardboard. Cut out the fin. Use the template of the fin and trace four fins on thicker, more rigid cardboard. Cut them out carefully. Fold on the dotted line and stick the fins around the bottle at equal distances. (Look at the sketch to see exactly where.)

Assignment 4:

[lo 1.10]


Do you know how to enlarge this sketch of a fin according to scale/proportional to a fin of ± 20 cm?

  • Draw squares across the sketch: 4 in the breadth and 8 in the length..
  • In this case, each square is 5 mm by 5 mm.
  • Draw squares of 30 mm by 30 mm on an A4 sheet of paper – 4 in the breadth and 8 in the length (8 x 30 mm = 240 mm that will give a fin of ± 20 cm).
  • Now trace the pattern onto the larger squares.
  • Now you have a fin of ± 20 cm

Assignment 5:

Decide which type of body fin will be the most suitable and draw a clear freehand sketch of your choice

[lo 1.8]

Assignment 6:

To make a final drawing (correct size with captions) of the body fin on a sheet of paper. use it as a template to trace onto a thicker sheet of cardboard. (use the method as explained in assignment 4).

[lo 1.14]

Assignment 7:

To build the body of the rocket according to the following instructions

[lo 1.14]


Make the body of the rocket by following the instructions below. Cut one 2ℓ bottle right through along the second line just below the sticker (Sketch 1). The part that has the cork in it will be the top section of your rocket. The intact bottle with the opening pointing down forms the lower section of your rocket. You need a weight in the top section of your rocket.


  • The rocket is not balanced when the engine is in the lower section. That is the heavier section. You have to find a centre of gravity, so that the mass can be spread proportionally on both sides.
  • It is therefore necessary to put something heavy in the upper section of your rocket so that the rocket can be more stable.
  • When the fuel is added, the lower section of the rocket will be even heavier.
  • When a rocket is stable, it continues flying vertically upwards, without overturning and losing direction.
  • So put a few fairly big pebbles in a plastic bank coin pouch and stick it firmly to the bottom on the outside of the intact bottle that is being held upside-down (Sketch 2).
  • Now put the top section of the bottle that has been cut through on top and stick it firmly to the intact bottle with masking tape/strong wide adhesive tape (Sketch 3).

Assignment 8:

In the space below, draw a top view of the position of the fins. use a protractor and pocket calculator for correct spacing

[lo 1.14]

Now affix the fins as planned. Once the rocket has been tentatively completed, it is now necessary to find your rocket’s centre of gravity and its centre of pressure.


Learning outcomes(LOs)
LO 1
Technological processes and skillsThe learner will be able to apply technological processes and skills ethically and responsibly using appropriate information and communication technology.
Assessment standards(ASs)
We know this when the learner:
Investigates:1.3 investigates the background context, the nature of the need, the environmental situation, and the people concerned when given a problem, need or opportunity set in a local context;
Designs:1.7 generates at least two alternative solutions and annotates the ideas;
1.8 chooses possible solutions, gives sensible reasons for choice, and develops a chosen idea using graphics or modelling techniques;
Makes:1.10 chooses and uses appropriate tools and materials to make products by measuring, marking, cutting or separating, shaping or forming, joining or combining, and finishing different materials with some accuracy;
1.11 use safe working practices and shows awareness of efficient ways of using materials and tools;
Evaluates:1.12 evaluates the product or system based on criteria linked directly to the design brief and some of the specifications and constraints, and suggests improvements or modifications;
1.13 evaluates the efficiency of the plan of action followed and suggests improving future plans;
Communicates:1.14 presents ideas (in a project portfolio) using two-dimensional or three-dimensional sketches, circuit diagrams or system diagrams.

Questions & Answers

Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Technology grade 7. OpenStax CNX. Sep 10, 2009 Download for free at http://cnx.org/content/col11032/1.1
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