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BFG Landing Gear Division CHCAT Progress Report - December 2000

The December 2000 progress report outlines the status of three full-scale tests conducted by BFG Landing Gear Division's CHCAT program. The tests include fatigue assessments of the main landing gear (MLG) for the Dash-8 Series 400, high-cycle wear testing on hydraulic actuators, and fatigue evaluation of MLG pistons with diameters of 5” and 10”. Key milestones include the issuance of qualification test procedures, completion of test rig designs, and current calibration status of rigs. Concerns about grinding facilities and rig performance are also discussed.

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BFG Landing Gear Division CHCAT Progress Report - December 2000

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  1. BFG LANDING GEAR DIVISION CHCAT CHCAT PROGRESS REPORTDECEMBER 2000 STATUS CONDUCTING THREE FULL SCALE TESTS: 1. Fatigue of entire MLG - Dash-8 Series 400.2. High Cycle (Dithering) wear test on hydraulic actuator. 3. Fatigue of MLG pistons 5” and 10” OD (Cr vs. WC-Co-Cr).

  2. BFG LANDING GEAR DIVISION CHCAT TEST 1: MLG FATIGUE TEST MILESTONES • Qualification Test Procedure (QTP) issued. • Test Rig - Superstructure design complete April/2000. • To be delivered August 25/2000. • Loading system design complete April/2000. • Test Rig calibrated Feb/2001. CURRENT STATUS • Most Parts Coated by VacAero, Piston to be Coated and Ground by SouthWest. • Concern: no grinding facilities in Canada.

  3. BFG LANDING GEAR DIVISION CHCAT TEST 1: MLG FATIGUE TEST

  4. BFG LANDING GEAR DIVISION CHCAT TEST 1: MLG FATIGUE TEST

  5. BFG LANDING GEAR DIVISION CHCAT TEST 1: MLG FATIGUE TEST

  6. BFG LANDING GEAR DIVISION CHCAT TEST 1: MLG FATIGUE TEST

  7. BFG LANDING GEAR DIVISION CHCAT TEST 1: MLG FATIGUE TEST

  8. BFG LANDING GEAR DIVISION CHCAT TEST 2: HIGH CYCLE WEAR TEST MILESTONES • QTP Issued. • Test Rig - Complete. • Test Engineering and Test Article complete. • 90 % of one life complete, 66% overall complete • CURRENT STATUS • Rig running again, slowed by rig compensator problems.

  9. BFG LANDING GEAR DIVISION CHCAT TEST 3: PISTON FATIGUE TEST MILESTONES • Engineering test requirements issued May 2000 • QTP issued August 2000. • Engineering design complete. • Test rig design to complete for 5”, 80% for 10”. • Test articles required: 5” OD Piston 10” OD Piston 3 Cr - 3 HVOF 3 Cr - 3 HVOF Rough Machined Awaiting material

  10. BFG LANDING GEAR DIVISION CHCAT TEST 3: PISTON FATIGUE TEST TEST CONFIGURATION

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