I don't know what it means, but there is such a thing.

In the early 1980s an American shooter, Don Nygord, found that shortening the barrel length greatly improved the balance and inertial envelope of the gun, and this reduction in length did not adversely effect velocity or accuracy.

that´s it!

Can't come up with anything in English for "envolventes," but there are lots of texts out there describing the principles involved in your text. Some examples:


European Car: The Weight Penalty.(Brief Article)
... it also has to spin the wheels and tires so the moment of inertia--the rotational equivalent of weight--of all rotating parts also affects how quickly the car ...
www.findarticles.com/cf_dls/m0BUX/12_30/57160084/p1/article...


CycleDyn -- Theory of Testing
... Ideally, the inertia (equivalent vehicle weight) of the roll should match the actual weight of the vehicle under test for perfect simulation of on-road ...
www.superflow.com/support/cycledyn-theory.html

The closest guess I can come up with for "envolventes" would be "involved," since "envolvente" gets (mis)used a **lot** in Spanish that way...

... cr ?&D^*&E}. The full set of completion inertias is described in terms of seven linear
inequalities *involving inertias* and ranks of specified submatrices. The ...
epubs.siam.org/sam-bin/dbq/article/29647 - 4k -

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