Position Summary
As a Mass Properties Engineer, you will be responsible for the weight and balance management of our next-generation eVTOL aircraft. You will track, calculate, and optimize the mass properties (mass, CG, and moments of inertia) throughout the entire product lifecycle—from conceptual design to flight testing and certification. Your work is critical to ensuring the aircraft meets performance targets, safety requirements, and JCAB/FAA certification standards.
Key Responsibilities
- Weight & Balance Management: Establish and maintain the aircraft's mass properties database using PLM software and specialized weight management tools.
- Estimation & Analysis: Perform detailed weight estimations for primary structures, propulsion systems (batteries/motors), and avionics during the design phase.
- CG Control: Monitor Center of Gravity (CG) envelopes and provide design recommendations to engineering teams to ensure the aircraft remains within controllable limits.
- Inertia Calculations: Calculate and analyze Moments of Inertia (MOI) and Products of Inertia (POI) for flight dynamics modeling and control law development.
- Reporting: Generate Mass Properties Reports (MPR) for design reviews and regulatory compliance (e.g., SAWE RP8).
- Verification: Lead physical weighing activities of components, sub-assemblies, and the fully integrated aircraft to validate digital models.
- Optimization: Identify weight reduction opportunities and lead "weight sweeps" to improve the aircraft's payload capacity and range.
Required Qualifications
- 3+ years of experience in mass properties engineering within the aerospace industry.
- Proficiency in CAD software (CATIA V5, NX, or SolidWorks, etc...) to extract mass data.
- Experience with weight management software.
- Strong understanding of SAWE Recommended Practices.
- Proficiency in Excel/VBA, Python, or MATLAB for data analysis and automation.
Preferred Qualifications
- Experience in eVTOL sector
- Experience with composite structures and high-voltage battery systems mass characteristics.
- Knowledge of certification processes.
- Experience in flight test support and actual aircraft weighing operations.
What We Offer
- Strong communication skills to interact with design owners, systems engineers, manufacturing, and program management.
- High rigor, attention to detail, and ownership of integration issues.
- Ability to synthesize complex technical topics concisely.
- Ability to work in fast-paced environments with evolving requirements.
Type of Employment
- Permanent Employee or Contract Employee
- Probationary period: 3 or 6 month
Place of Employment
Nagoya Airport Office: Nagoya Airport Terminal Building 2nd floor, Toyoba, Toyoyama-Cho, Nishikasugai, Aichi Prefecture
Measures to Prevent Secondhand Smoke: Smoking Room Provided
Scope of Change: Places determined by the Company (including places where telework is performed)
Working Hours
Discretionary labor system
Discretionary Labor System: Specialized Class Deemed working hours per day: 10 hours
Basic working hours: Start 9:00 End 18:00(Including 1hour break time)
Overtime Work: Available
Holidays
- 115 days off per year(Saturday / Sundays / Newyear holidays(12/29~1/3) / Company designated holidays)
- Annual paid leave
- Refresh leave (Granted after 1, 3, 4, 5 years of service)
Salary
- Estimated Annual Salary: JPY 7,000,000 - JPY 12,000,000
Monthly Salary: JPY 584,000 - JPY 1,000,000
Includes fixed overtime pay for 45 hours, amounting to JPY 202,181 - JPY 346,205
Additional overtime pay will be provided for hours exceeding the fixed overtime.
To be determined based on skills, experience, and abilities
Expenses
- Commuting allowance, business trip allowance, moving allowance, etc.
- Relocation Packages
- There are some conditions.
Social Insurance
- Health insurance
- Employee pension (according to Japan standards)
- Employment insurance
- Worker's accident compensation insurance
Scope of Work Change
- Reassignment may occur to any other work.
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