SOURCES SOUGHT
17 -- NAVAIR REQUEST FOR INFORMATION (RFI) LOW FRICTION SLIPPER MATERIAL FOR AIRCRAFT ARRESTING ENGINE COMPONENTS
- Notice Date
- 5/1/2008
- Notice Type
- Sources Sought
- NAICS
- 336413
— Other Aircraft Parts and Auxiliary Equipment Manufacturing
- Contracting Office
- Department of the Navy, Naval Air Systems Command, Naval Air Warfare Center Aircraft Division Lakehurst, Contracts Department, Hwy. 547 Attn:B562-3C, Lakehurst, New Jersey, 08733-5083
- ZIP Code
- 08733-5083
- Solicitation Number
- N68335-08-RFI-0204
- Response Due
- 6/5/2008
- Point of Contact
- Letitia M Baker,, Phone: 732-323-4406, Jennifer L Vaccaro,, Phone: 732-323-5129
- E-Mail Address
-
letitia.baker@navy.mil, vaccarojl@navy.mil
- Small Business Set-Aside
- N/A
- Description
- REQUEST FOR INFORMATION (RFI) LOW FRICTION SLIPPER MATERIAL FOR AIRCRAFT ARRESTING ENGINE COMPONENTS Naval Air Warfare Center, Aircraft Division Lakehurst, NJ This is a Request for Information (RFI). There is no solicitation available at this time. The Government will not pay for any information received in response to this RFI, nor will the Government compensate any respondent for any cost incurred in developing the information provided to the Government. The Naval Air Systems Command is seeking proposals from potential sources for a replacement low friction slipper material. As aircraft land aboard US aircraft carriers, they stop by capturing a cable with their “Tail Hook” and pulling the cable through a hydraulic cylinder based arresting engine. This engine transfers the energy from the airplane into the fluid, thus bringing the airplane to a stop. There are several components which slide along steel rails riding on low friction slippers. In addition, there are two 20 inch pistons which ride on these slippers within their cylinders. Currently, NAVAIR uses a graphited, fabric based, plastic-phenolic material for these slippers. The crosshead slippers run on steel rails lubricated with lithium based grease. The piston slippers are exposed to ethylene glycol based hydraulic fluid. As the slippers wear, misalignment of the components occurs and hydraulic fluid leaks develop in the packing. A further problem is with the piston slippers. The hydraulic fluid causes them to expand slightly. This has caused the accumulator piston to get stuck, requiring significant unscheduled maintenance to correct the problem. The initial component being considered is the fluid accumulator. This is a wet/dry style accumulator with a twenty (20) inch piston, inside of a steel cylinder. The cylinder has a minimum tensile strength of 100,000 psi and a minimum yield strength of 80,000 psi. The inside surface of the cylinder has a 16 microinch finish. The slippers provide the sliding surface for piston. They are arranged equally spaced radially around both ends of the piston, twelve (12) per end. Each slipper measures 3.5 x 2.5 x.625 inches. One set is constantly immersed in hydraulic fluid. The piston moves about 16 feet in three seconds, with a maximum velocity of about 130 inches per second. The total elapsed time of an arrestment event is about three (3) seconds. Following an arrestment, the system is reset to its original condition and made ready for another event in 30 seconds. Candidate slippers shall have slower wear than the current slippers, without damaging the steel cylinder. They shall be compatible with ethylene-glycol based hydraulic fluid and lithium grease with minimal or no swelling. They shall be dimensionally equal to the existing slippers so that no modification to other components will be required. Candidate replacements will be technically evaluated and then tested for ease of installation, life cycle and suitability for the intended equipment. Once a candidate is deemed acceptable, there are several other sets of slippers on the arresting engine that this solution may be acceptable for.
- Web Link
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- Record
- SN01565012-W 20080503/080501220353-d8b799350f672686d2eb7113d706568a (fbodaily.com)
- Source
-
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