The Cessna CitationJet/CJ series (Model 525) are American turbofan-powered light corporate jets built by the Cessna Aircraft Company in Wichita, Kansas. The Cessna Citation Jet was developed as a replacement for the Citation and Citation I. This highly successful new model 525 was launched at the annual US National Business Aircraft Association convention in 1989. First flight occurred on April 29 1991 as the FAA certification was awarded on October 16 1992 and the first delivery was on March 30 1993.
This all new aircraft has a modified version of the Citation’s forward fuselage, but with a new supercritical laminar flow wing, and a new T-tail configured tailplane. The Citation Jet is powered by two Williams FJ44 turbofans, and features EFIS avionics and single pilot certification. Its fuselage is 11 inches (27 cm) shorter than the Citation I’s, but has a lowered center aisle for augmented cabin height. It features EFIS avionics and is certificated for single pilot operation.
Simplicity, economy and performance are three words that can best describe the Citation Jet design goals. This goal proved to be a challenge for the company, especially in designing an aerodynamic structure that is cheaper to produce and handles well. Previous Citations had used a straight wing, which slows the aircraft considerably but considerably reduces production and design costs. The Citation Jet upgraded to a natural laminar flow wing, taking four years to design in a joint venture between Cessna and NASA.
The Speed is provided by two Williams/Rolls-Royce FJ44-1A engines and augments the speed increased by the reduced drag on the wings. Williams/Rolls Royce was able to produce engines that generated 1,900 pounds of thrust each, while being aerodynamic and light enough for the CJ. The FJ44 engines were simplified to have a third of the moving parts that most engines of that time did, as well as burning about 30% less fuel than other jet engines.
The Citation Jet boast its good short field runway abilities, needing only 3,080 feet to take off at sea level, and 5,710 feet to take off from a runway at 5,000 feet. The CJ can climb to 37,000 feet in 25 minutes. Its high speed cruise is 378 knots, and its long range cruise speed is 323 knots, where it flies at its maximum certified ceiling of 45,000 feet. Its cabin falls within the average cabin size that of other five-passenger light private jets measuring 4.7 feet high, 4.8 feet wide and 11 feet long.