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General Electric is supporting studies by "several companies" into the potential re-engineing of Gulfstream IIs and IIIs with its CF34-8C, now under development for Bombardier's Canadair CRJ700 regional jet.
The Gulfstream re-engineing is one of several possible options for future uses of the engine, although GE stresses that "-the main effort is to certify the engine and get it into service on the CRJ700". Interest has developed in the potential replacement of the early Gulfstreams' Rolls-Royce Spey powerplants because of the low noise and performance benefits of the new GE engine. The CF34-8C1 will be certificated with a take-off thrust of 56kN (12,670lb), but with an automatic power-reserve rating of 61kN and an installed weight of about 1,000kg.
"Several companies are studying the market to determine what degree of interest there is," says GE market and business-development manager George Rabone. "We obviously need the active co-operation of the original-equipment manufacturer. From a technical standpoint, there is no question that it is a good idea, but the companies are trying to work out how to put a business case together." Gultstream confirms that it is in preliminary talks with Garrett Aviation Services about undertaking the programme.
GE is also pushing the powerplant as a solution for manufacturers looking to fill a potential niche between the GIV and the GV.
Fokker Aerostructures has signed a deal with Gulfstream for the redesign and supply of lightweight composite rudders for the GIVSP and GV business jets. The Fokker Aviation subsidiary will also supply rudder spares for the GII, GIII and GIV.
Source: Flight International
