Composite Cartridge Performance and Efficiency

Composite Cartridge Performance and Efficiency

Assessment

Interactive Video

Physics

10th - 12th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial compares standard brass-cased cartridges with composite cartridges, highlighting their similarities in length, projectile, and ballistic performance. It explains the differences in internal and external profiles, emphasizing the molding process's role in shaping the powder column and ensuring consistent performance. The tutorial also discusses the efficiency of composite cartridges, which use less powder while maintaining the same ballistic output, and the advantages of polymer cases in reducing heat transfer compared to brass.

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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the similarities between the standard brass-cased and composite .308 cartridges?

Different ballistic performance

Different projectile types

Same length and projectile

Different powder and primer

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the internal profile of a composite cartridge differ from a brass cartridge?

It follows the external profile

It is dictated by the chamber

It is shaped by the molding process

It is identical to a brass cartridge

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of a consistent molding process in composite cartridges?

Inconsistent rounds

Tighter velocity deviations

Wider dispersion on target

Higher powder usage

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What advantage does a composite cartridge have in terms of powder usage?

Requires more heat transfer

Uses more powder for the same output

Uses less powder for the same output

Produces less ballistic performance

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the combustion of powder in composite cartridges compare to brass cartridges?

No combustion

More complete combustion

Same level of combustion

Less complete combustion

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What role does the polymer case play in heat transfer during the ballistic event?

Transfers more heat

Increases chamber temperature

Acts as an insulator

Acts as a conductor

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the energy transfer in composite cartridges affect powder usage?

Decreases powder usage

Requires more powder for same ballistics

Increases powder usage

Has no effect on powder usage

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the impact of less heat transfer in composite cartridges on energy efficiency?

Reduces energy efficiency

Increases energy efficiency

Has no impact on energy efficiency

Requires more energy input

9.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary benefit of using less powder in composite cartridges?

Increased recoil

Reduced ballistic performance

Same ballistic performance with less input

Higher chamber temperature