The design, development, and manufacture of a flightworthy two-fluid fireproof hydraulic brake system (FHBS) kit for flight testing on a C/KC-135 has been accomplished. The results of system concepts trade studies, the concept selection procedure and rational, component and system design analyses, and component and system testing are summarized herein. The FHBS design selected is a two-fluid concept that uses nonflammable chlorotrifluoroethylene (CTFE) in the high fire-potential area of the brake and landing gear area. The barrier between the CTFE fluid and the MIL-H-5606 hydraulic fluid is a new component; a reservoir/separator. Based on the analysis and laboratory testing, it was concluded that the FHBS design is both flightworthy and has braking performance equivalent to the C/KC-135 brake system for runway/tire friction coefficients of 0.2 to 0.5. It is recommended that the FHBS kit be installed on a C/KC-135 and flight testing be accomplished. Recommendations regarding test conditions and instrumentation for flight testing are included. Keywords: Chlorotrifluoroethylene (CTFE) fluid; Nonflammable hydraulic fluid; Fireproof Brake Hydraulic System.
Fireproof Hydraulic Brake System
1985
318 pages
Report
No indication
English
Aircraft , Landing gear , Hydraulic fluids , Fire resistance , Hydraulic brakes , Chlorine trifluoride , Coefficients , Ethylenes , Flight testing , Friction , Laboratory tests , Reservoirs , Runways , Separators , Systems analysis , Test methods , Tires , Trade off analysis , Jet transport aircraft , Tanker aircraft , C-135 aircraft , KC-135 aircraft , Ethylene/chlorotrifluoro
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