Reference Documents

Listed reference documents suggested to support your preparation for the Associated Mass Properties Engineer exam are available in the SAWE store.

- SAWE Weight Engineers Handbook
- Introduction to Aircraft Weight Engineering Textbook
- Marine Vehicle Weight Engineering Textbook
- Inertia
- SAWE Paper 3612 – Measurement of the Inertia Tensor – A Review
- for AMPE-level: Handbook Chapter 5 “Mass Properties Calculation ” up to, but not including, “Unbalance of Rotating Objects” – pages 5.1 to 5.33 in 2011 version

- SAWE Paper 2095 – The Seven Secrets of Accurate Mass Properties Measurement
- SAWE Paper 2190 – Design of Fixtures
- Systems Engineering
- Weight Engineering Journal Fall 2015 – Mass Properties Engineering As A Systems Engineering Discipline
- A definition can be found in Wikipedia

- Statistics

The SAWE Weight Engineers Handbook is complementary with your SAWE membership.

All papers and journals can be downloaded from the SAWE Shop for free using your yearly allowance as SAWE-member.

For more details and deeper knowledge you may study the documents listed below:

- Book – Moments of Inertia and Products of Inertia of a Rigid Body
- SAWE Paper 3752 – A Portable Device for Measuring the Cog: Design, Error Analysis and Calibration
- industry specific papers

Sample Questions

Below you will find some example for questions.

Some questions will require calculations.

All questions are multiple choice and have 4 proposes answers, of which only 1 answer is correct.

- A weight removed aft of the vehicle’s CG will cause the CG to move in which direction?
- A calculated weight may be determined from which information?
- What is the Moment of Inertia (MOI) in the X direction about the bracket’s CG (see picture P-004 and table T-007)? Assume a density of 8.0 g/cm³. The diameter of the hole is d=5.0 cm. Use metric measures.
- What contributes to a lightweight design?
- Which of the following is a mandatory part of a Request for Proposal (RFP) to potential suppliers/risk sharing partners?
- An assembly is composed of three components. Each component is weighed separately with the following readings and 3-sigma uncertainties. Given this information, what is the total weight and combined 3-sigma uncertainty for the weight of the assembly?
- How should an ideal weighing be performed?
- A random sample of twenty mass measurements is listed below. What is the sample mean and standard deviation?
- Which parts are often not modeled but might have an influence on the Mass Properties of the component?
- True or false: Mass Properties Engineering uses similar methodologies as Systems Engineering? (for descriptions of Systems Engineering see Reference Documents)
- The figure (see picture P-008) is a boxplot of volumetric measurements. What are the approximate values of the first quartile and median of the data? (for descriptions of Systems Engineering see Reference Documents)

Subjects

Exam questions cover the subjects below.

Some questions on estimation, calculation, measurement and statistics require doing calculations.

Mass Properties Skills | Influence | Engineering Knowledge | Process |

Estimation – Weight, CG and Inertia | General | General | General |

Calculation – Weight, CG and Inertia | Safety | Statistics | Data Sources |

Measurement – Weight, CG and Inertia | Performance | Materials | Data Check |

MP Coordinate System | Manufacturing | Reporting | |

Data Bases&Standards | Vehicle Components | Mass Properties Control | |

Mass Properties Engineer Responsibilities | Software | Target Achievement | |

Contracts | Systems Engineering | ||

Buoyancy | Procedures |

Mentoring and Training

You may attend to SAWE Training Courses or apply as a mentee to the SAWE Mentoring Program.

For questions or comments on Certification