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UNCLASSIFIED. Presented to: NATO RESEARCH and Technology Organization (RTO) Applied Vehicle Technology (AVT) Pane l RTO- AVT -156. Design of Repairs for Battle Damaged Rotary Wing Aircraft.
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UNCLASSIFIED Presented to: NATO RESEARCH and Technology Organization (RTO) Applied Vehicle Technology (AVT) Panel RTO- AVT -156 Design of Repairs for Battle Damaged Rotary Wing Aircraft Distribution authorized to DoD and DoD contractors only; Critical Technology; August 2001. Other requests for this document shall be referred to the U.S. Army RDECOM, ATTN: RDMR. Presented by: Mr. Kevin Rees Chief, Maintenance Engineering Division (MED) Aviation Engineering Directorate (AED) Aviation and Missile Research, Development and Engineering Center May 2010 UNCLASSIFIED
Design of Repairs for Battle Damaged Rotary Wing Aircraft • Engineering Substantiation • Damage Evaluation • Logistics • Engineering Instructions • Engineering Calculations • Assistance • Fielding New Repair Technologies
Design of Repairs for Battle Damaged Rotary Wing Aircraft • Engineering Substantiation • Original Strength • Impact to Other Systems • Hydraulics • Electrical • Weight & Balance • Aerodynamic Loading • Assistance
Design of Repairs for Battle Damaged Rotary Wing Aircraft • Damage Evaluation • Inspection • Documentation • Projectiles • Entry • Multiple Exit / No Exit • Damage Nonlinear • Overstressed Parts • Paint Blistering • Sheared Fasteners • Thermal Damage • Discoloration • Conductivity
Design of Repairs for Battle Damaged Rotary Wing Aircraft PROJECTILE DAMAGE ENTRY EXIT COLLATERAL
Design of Repairs for Battle Damaged Rotary Wing Aircraft IMPACT DAMAGE CRACK
Design of Repairs for Battle Damaged Rotary Wing Aircraft THERMAL DAMAGE
Design of Repairs for Battle Damaged Rotary Wing Aircraft • Logistics • Personnel • Skill Level • Previous Experience • OEMFSR (Original Equipment Manufacture Field Service Representative) • On-sight Representative • Reports and Data • Materials and Equipment • Heat Treatment • Freezers • Machine Shop
Design of Repairs for Battle Damaged Rotary Wing Aircraft • Engineering Instructions • Text • Non-Ambiguous • Logical • Legible • Attachments • Independent • Enhance Not Substitute
Design of Repairs for Battle Damaged Rotary Wing Aircraft • Engineering Calculations • Stress • Loads • Beams • Torque Boxes • Axial Members • Shear Webs • Margin of Safety
Design of Repairs for Battle Damaged Rotary Wing Aircraft Exhibit 1 – Unknown Loads
Design of Repairs for Battle Damaged Rotary Wing Aircraft Exhibit 2 – Time Before Overhaul
Design of Repairs for Battle Damaged Rotary Wing Aircraft Exhibit 3 - Review
Design of Repairs for Battle Damaged Rotary Wing Aircraft Exhibit 3 - Review
Design of Repairs for Battle Damaged Rotary Wing Aircraft Exhibit 3 - Review
AH-64 Battle Damage Apache Tailboom BDAR, Damage
AH-64 Battle Damage Repair 5 1 3 Repair Angle Skin Filler Remove damaged flange 2 6 4 Stringer Filler L-angle and spacer Skin Doubler
Design of Repairs for Battle Damaged Rotary Wing Aircraft • Fielding New Repair Technologies • Qualification Plan • Materials & Processes • Analysis and Testing • Identify Logistic Requirements • Substantiation Report • Damage Limits • Calculations • Fastener and Material Selection – Worst Case • Additional Qualifications • Technicians and Equipment per Field Conditions • OEM Test Repair
Design of Repairs for Battle Damaged Rotary Wing Aircraft • Conclusion • Engineer • Skilled in many areas • Determine Aircraft Loading • Airworthiness • Substantiation • Assistance • New Repairs • Substantiation
