8 Anti-weight

To compensate for the weight of an object, merge it with other objects that provide lift.
  • Rear spoiler on a sports car pressing the vehicle down at high speed.
  • Inject foaming agent into a bundle of logs, to make it float better.
  • Use helium balloon to support advertising signs.

To compensate for the weight of an object, make it interact with the environment (e.g. use aerodynamic, hydrodynamic, buoyancy and other forces).
  • Aircraft wing shape reduces air density above the wing, increases density below wing, to create lift. (This also demonstrates Principle 4, Asymmetry.)
  • Vortex strips improve lift of aircraft wings.
  • Hydrofoils lift ship out of the water to reduce drag.
Principe 8 : Rear spoiler on a sports car pressing the vehicle down at high speed.


From TRIZ to ASIT

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Concrete examples

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Is this TRIZ principle frequently used?

This principle is rarely used with 44 instances in the matrix.

This principle is proposed to solve the following contradictions:

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1/3 1/9 1/10 1/35 2/10 2/23 2/27 3/1 3/9 3/11 3/12 3/13 3/14 3/19 4/8 4/21 8/4 9/3 9/14 9/19 9/32 10/1 10/23 12/1 13/38 14/1 14/3 14/9 19/9 21/1 26/38 27/1 27/2 27/10 27/35 32/9 32/38 33/15 33/27 35/1 35/12 35/27 37/27 38/18


The colour indicates the ranking of the proposed principle to solve the contradiction: 1st, 2nd, 3rd, 4th.
This ranking reflects the frequency of occurrence of the principle in the analysed patents for this type of contradiction.
When a principle appears in first position, it means that it is statistically the most used in the patents studied for this type of problem.

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