When Cessna launched the Citation Excel in 1994, it also launched the final variant of the first generation Citation I/II family (the Model 500/550 series), the Citation Bravo. Both aircraft use the Pratt & Whitney Canada PW500 series turbofan engine and both aircraft were the launch designs for the engine. While the Citation Bravo uses the PW530 engine, the Citation Excel uses the more powerful PW545 engine. Both engines use a common core and were a clean-sheet design from PWC. Originally thought was given to improving the JT15D engine used on the first generation Citations, but it was realized that engine technology and materials science were at the point that an all-new engine was more attractive. The PW500 has its roots in the PWC’s TTID engine (Turbine Technology Integration Demonstrator) which was used as a ground test engine to test new engine concepts in the early 1990s. One of these was the integrally bladed rotor (similar to a blisk), where the hub and individual blades are one part. This concept was carried over to the PW500 design as one of the first aircraft engines to use it. German engine manufacturer MTU is a 25% risk sharing partner with PWC on the PW500 and the engine’s FADEC is a derivative of the PW200 helicopter engine’s FADEC used on a number of helicopters like the EC135, Bell 429, A109 and S-76. MTU collaborated with PWC in the 1980s on the PW300 series engine. #avgeek #aviation #aircraft #planeporn #KADS #ADS #Addison #airport #planespotting #instaplane #instagramaviation #Avgeekery #Cessna #Citation #CitationExcel #N667QS #NetJets #splendid_transport #instaaviation #aviationlovers #aviationphotography #flight #AvgeekSchoolofKnowledge (at Addison Airport)
