Mass MGA

.pptx
School
University of Illinois, Urbana Champaign **We aren't endorsed by this school
Course
AE 353
Subject
Accounting
Date
Oct 11, 2023
Pages
1
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Mass Growth Allowance Design Matunity Percentage Mass Growth Allowance ' ° F . ¥ o " g Maturity (Basis fpr I\:Iass Electrical/Electronic w g 8 Py ' & § § g 2 & Code Determination) Components % O @ o g 5 o § .5 i - g_ v 5 £ 3 g E a £ T k: 24 &= -g é w2 d: m 'g 3 o w2 g -g 2 0-5kg | 5-15kg | =15kg = = = m A E 1 Estimated 20-35 15-25 | 10-20 [ 18-25 | 30-50 | 15-25 | 20-25 | 50-100 [ 20-35 | 20-30 | 20-35 | 18-25 | 25-75 2 Layout 15-30 10-20 5-15 | 10-20 | 15-30 | 10-20 | 10-20 | 1545 10-20 | 10-20 | 10-25 | 10-20 | 20-30 c 3 Preliminary Design 8-20 3-15 3-12 | 4-15 8-15 5-15 5-15 10-25 5-15 5-15 8-15 5-15 | 10-25 B Released Design 5-10 2-10 2-10 2-6 3-8 2-7 3-7 3-10 3-5 3-8 3-8 3-4 3-3 A 5 Existing Hardware 1-5 1-3 1-3 1-3 1-3 1-3 1-3 1-5 1-3 1-4 1-5 1-3 1-3 6 Actual Mass Measured mass of specific flight hardware; no MGA; use appropriate measurement uncertamty. s | 7 | CFEorpecification Typically, an NTE value is provided, and no MGA is applied. Expanded Definitions of Maturity Categories a. An approximation based on rough sketches, parametric analysis, or incomplete requirements El Estimated b. A guess based on experience c. A value with unknown basis or pedigree E2 Lavont a. A calculation or approximation based on conceptual designs before mitial sizing (equivalent to layout drawings) ayou b. Major modifications to existing hardware Ce o a. Calculations based on new design after mitial sizing but before final structural, thermal, or manufacturing analysis G Preliminary Design b. Mmor modification of existing hardware . a. Calculations based on a design after final signoff and release for procurement or production C4 Released Design b. Very minor modification of existing hardware a. Measured mass from another program, assuming that hardware will satisfy the requirements of the current program with no changes AS Existing Hardware | b. Values substituted based on empirical production variation of same or similar hardware or measured mass of qualification hardware c. Catalog values Note: The MGA percentage ranges in the above table are applied to the basic mass to amive at the predicted mass. ]I AEROSPACE
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