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“Henry-1” Helps Protect Sonoma County


Donaldson Aerospace & Defense, a division of Donaldson Company is help- ing a sheriff’s office safeguard thousands of citizens by pro- tecting the department’s law enforcement helicopter from damaging debris and contami- nants with a Donaldson Inlet Barrier Filter. To enhance Henry-1’s tur- bine engine capabilities, the Sheriff’s Helicopter Unit recently contracted with Rotorcraft Support, Inc., of Van Nuys, California, to install a new Donaldson Inlet Barrier Filter (IBF) kit. Since replacing the com-


mercial Engine Air Particle Separator (EAPS) filtration system in June, Henry-1’s IBF has increased engine power margin by about 20 degrees C, a critical issue because the heli- copter typically operates at high gross weights that limit engine temperature margin. In addi- tion, the IBF’s effective filtra- tion keeps the engine compres- sor clean, reducing wear and potential maintenance costs.


“Henry-1’s experience is an excellent demonstration of IBF benefits,” said Robert Stenberg, Business Development Director at the Donaldson St. Louis opera- tion. “Our IBF systems pro- vide better filtration and func- tion continuously, independ- ent of flight condition or power level. The Sonoma County Sheriff’s Helicopter Unit often flies at high gross weight, and that prevents them from activating the EAPS scav- enge when they most need it during takeoffs and landing. With the current budget con- straints that helicopter opera- tors face, our IBF virtually eliminates the possibility of an expensive FOD repair, quickly providing a return on invest- ment.” Stenberg said. ◆


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