Aerospace Techtron HPV PPS Thrust Reverser Limiter Washer Challenge Develop efficient and high reliability components that meet the extreme demands required in thrust reverser systems Landing speeds of aircrafts of up to 300 kmh and varying sizes of runways in combination with the trend to short cut taxiing to save fuel and gas require the usage of thrust reversers. These support the aircraft wheel brakes as well as aerodynamic speed brakes to eliminate kinetic energy and decrease speed after touch down. Thrust reversers are operated by linear hydraulic actuators. On hard landings or aborted takeoffs the thrust reverser needs to be operated at maximum thrust level. To enable the full efficiency the actuator shafts are supported by washers. The washer guides the shaft under those high loads to open the cascade door and keep them in place. Limiter Bushing After flight temperatures can be as low as minus 60 C 140 F and the thrust reverser can be exposed to temperature peaks of up to 160 C 320 F for a short period. Smooth gliding without wear or judder is required over this whole temperature range. Key Requirements Low coefficient of friction versus light weight metal alloys Wide operational temperature window Thermal expansion similar to aluminum Low or no abrasion against aluminum alloys Chemically resistant to aircraft fuels and other aircraft liquids like Skydrol Minimum 20 years lifetime mcam.com MCAMconnect contactmcam.com Why Techtron HPV PPS Customer Benefits Higher reliability of the operation under aircraft engine conditions Techtron HPV PPS has been developed for glide and wear applications in extreme environments and is able to withstand very harsh chemical conditions. Its dimensional stability over a wide temperature range enables a combination with lightweight aluminum alloys at low tolerance. Techtron HPV PPS is a lighter weight material solution offering optimal performance qualities to replace the previously used metal. Cost savings of up t
o 60 in up-scaling process Cost savings through low system maintenance requirements Optimized component surface and tolerances provided by precise material machinability Dynamic Coefficient of Friction measured on a plastics pin on rotating steel disk - tribo system 0.25 0.2 0.3 0.25 0.4 Ertalon 66 SA Techtron HPV PPS Techtron PPS 0.6 0.4 0.35 0.3 0.2 0.25 0.2 0.15 Mitsubishi Chemical Advanced Materials Added Value Understanding of the aerospace environment and requirements experience in very diverse and demanding applications 0.6 Ertalyte 0.3 0.45 Ketron TX PEEK 0.3 0.5 Ketron GF30 PEEK 0.4 Ketron HPV PEEK 0.3 0.35 Ketron 1000 PEEK 0.5 0.6 Duratron 4301 PAI 0.5 0.4 Duratron T4203 PAI 0.6 Duratron D7000 PI Dynamic Coefficient - 0.8 Duratron CU60 PBI 1.0 0.15 Laboratories material testing capabilities in order to e.g. generate data on wear and abrasion behavior Full project management by our solution development from metal to plastic conversion 0 Test Conditions Pressure 3 MPa Sliding Velocity 0.33 ms Surface Roughnessof the C35 steel mating Surface Ra 0.7 - 0.9 m Total Distance Run 28 km Normal Environment air 23 50 RH Unlubricated Operation mcam.com Distributed by Support in the up scaling process and identification of significant cost savings potential We are able to manage and deliver orders of any size from single to high quantity machined pre-shapes which enables cost savings by 60 MCAMconnect contactmcam.com All statements technical information and recommendations contained in this publication are presented in good faith and are as a rule based upon tests and such tests are believed to be reliable and practical field experience. The reader however is cautioned that Mitsubishi Chemical Advanced Materials does not guarantee the accuracy or completeness of this information and it is the customers responsibility to determine the suitability of Mitsubishi Chemical Advanced Materials products in any given application. Techtron is a registered trademark of
the Mitsubishi Chemical Advanced Materials group of companies. Design and content created by Mitsubishi Chemical Advanced Materials and are protected by copyright law. Copyright Mitsubishi Chemical Advanced Materials. All rights reserved. MCM AS 6 10.21.19
