EA6 B Flaperon Actuator Team Members Eric Sullivan

EA-6 B Flaperon Actuator Team Members: Eric Sullivan (Project Manager) Joseph Clark Casey Poeth Josselin Legeay Janice Wisely Advisor: Dr. De. Bartolo May 16, 2003 Team #27

Agenda The Model - Josselin Legeay n Timeline - Janice Wisely n Testing - Eric Sullivan n Testing Setbacks - Eric Sullivan n Results - Casey Poeth n Recommendations n – – Clevis Design - Joseph Clark Material Change - Joseph Clark n May 16, 2003 Corrosion Issues - Josselin Legeay Team #27

The Model n Scaled down n Stiffening Ridge 3 May 16, 2003 1 2 Team #27

Timeline - GANTT May 16, 2003 Team #27

Testing May 16, 2003 Team #27

Testing n 6 Tests – 3 w/ ridge – 3 w/o ridge n Procedure – Set-up – Pre-load – Test May 16, 2003 Team #27

Testing Setbacks n Clevis Design n Apparatus Inconsistency n Data Acquisition Techniques May 16, 2003 Team #27

Results May 16, 2003 Team #27

Results Test Test May 16, 2003 Team #27 1: 2: 3: 4: 5: 6: 745, 155 766, 682 957, 059 1, 573, 111 2, 000 1, 029, 879

Recommendations May 16, 2003 Team #27

Clevis Design May 16, 2003 n One Piece Design n Three Piece Design Team #27

Material Comparison May 16, 2003 Team #27

Corrosion issues n Cu 2+ Cu +0. 34 V H 2 0. 00 V Fe 2+ Fe -0. 44 V Zn 2+ Zn -0. 76 V Mn 2+ Mn -1. 18 V Al 3+ Al H+ May 16, 2003 -1. 66 V n n n Copper could attack the aluminum Could result in failure modes Aluminum oxide (Al 2 O 3) is impervious and coherent Corrosion stops when the layer is 1 nm thick Team #27

Conclusions n Clevis design n Material Change n Increase Number of Tests – S-N curve – Statistical verification May 16, 2003 Team #27

¿ Questions ? May 16, 2003 Team #27

Expenditures May 16, 2003 Team #27

Maximum Working Force May 16, 2003 Team #27

Pre-loading Force n May 16, 2003 Pre-loading force greater than maximum working force. Team #27