The Cessna Citation Hemisphere was a

business jet A business jet, private jet, or bizjet is a jet aircraft designed for transporting small groups of people. Business jets may be adapted for other roles, such as the evacuation of casualties or express parcel deliveries, and some are used by pub ...

project by

Cessna Cessna () is an American brand of general aviation aircraft owned by Textron Aviation since 2014, headquartered in Wichita, Kansas. Originally, it was a brand of the Cessna Aircraft Company, an American general aviation aircraft manufacturing c ...

Announced in November 2015, it was then expected to fly in 2019 but its development was suspended in April 2018 due to a delay in the development of its

Safran Silvercrest The Safran Silvercrest is a French turbofan under development by Safran Aircraft Engines. Development The engine was announced at the 2006 National Business Aviation Association convention. Certification was originally slated for the end of 2 ...

engines. It was designed for Mach 0.9 and would have a range.

Development

Announced at the 2015

National Business Aviation Association The National Business Aviation Association (NBAA) is a non-profit, 501(c)(6) organization based in Washington, DC, United States. NBAA’s mission, according to the non-profit data and transparency organization GuideStar, is: “to foster an en ...

(NBAA) conference with the widest cabin in its class, it was expected to fly in 2019. Although the Snecma Silvercrest was originally selected, the process was re-opened to the

Pratt & Whitney Canada PW800 The Pratt & Whitney Canada PW800 is a turbofan engine in the thrust class, under development by Pratt & Whitney Canada. Intended for the regional jet and business jet market, the gear-less PW800 shares a common core with the larger, geared PW100 ...

. The Silvercrest with over of thrust was confirmed for the 2016 NBAA Convention, along the selection of

Honeywell Honeywell International Inc. is an American publicly traded, multinational conglomerate corporation headquartered in Charlotte, North Carolina. It primarily operates in four areas of business: aerospace, building technologies, performance ma ...

Primus Epic cockpit and

Thales Group Thales Group () is a French multinational company that designs, develops and manufactures electrical systems as well as devices and equipment for the aerospace, defence, transportation and security sectors. The company is headquartered in Paris' ...

fly-by-wire Fly-by-wire (FBW) is a system that replaces the conventional manual flight controls of an aircraft with an electronic interface. The movements of flight controls are converted to electronic signals transmitted by wires, and flight control co ...

flight control system. The Silvercrest axial-centrifugal high-pressure compressor architecture is common below but rare in its range, and the pressure losses complexity at the final centrifugal stage made it slow to respond to commands in high altitude tests. This made Dassault cancel its Silvercrest-powered

Falcon 5X The Dassault Falcon 6X is a large, long-range business jet under development by Dassault Aviation in France. Its precursor, the Falcon 5X twinjet, was launched in 2013, rolled-out in 2015 and made its first flight on July 5, 2017, but its devel ...

, but the Hemisphere business case depends on it as it could lead to the best

fuel efficiency Fuel efficiency is a form of thermal efficiency, meaning the ratio of effort to result of a process that converts chemical potential energy contained in a carrier (fuel) into kinetic energy or work. Overall fuel efficiency may vary per device, wh ...

in the segment. Textron is confident Safran can resolve the problems before the 2019

first flight The maiden flight, also known as first flight, of an aircraft is the first occasion on which it leaves the ground under its own power. The same term is also used for the first launch of rockets. The maiden flight of a new aircraft type is alwa ...

. In April 2018, development was suspended to see how Safran manage the Silvercrest problems before a decision on its continuation is made, or to defer it or to switch to another engine. In May 2018, Safran announced it had launched a high-pressure compressor redesign for a go-ahead decision by the middle of 2019, after testing, shelving the Hemisphere program if problems cannot be fixed. The redesigned compressor will be tested in July 2019 to prove the engine operation. On October 15, 2018, fractional operator

NetJets NetJets Inc. is an American company that sells fractional ownership shares in private business jets. Founded as Executive Jet Airways in 1964, it was later renamed Executive Jet Aviation. NetJets became the first private business jet chart ...

announced the purchase of up to 150 Hemispheres, priced at $35 million each, along 175

Citation Longitude The Cessna Citation Longitude is a business jet produced by Cessna, part of the Cessna Citation family. Announced at the May 2012 EBACE, the Model 700 made its first flight on October 8, 2016, with certification obtained in September 2019. The ...

, ordered for $26 million each. In July 2019, Textron suspended the development as its

turbofans did not meet objectives. In October 2019, Textron reaffirmed that the project was still suspended, but not terminated.

Specifications

References

{{Cessna

Citation Hemisphere The Cessna Citation Hemisphere was a business jet project by Cessna. Announced in November 2015, it was then expected to fly in 2019 but its development was suspended in April 2018 due to a delay in the development of its Safran Silvercrest eng ...

Proposed aircraft of the United States Twinjets Low-wing aircraft

Hemisphere Hemisphere refers to: * A half of a sphere As half of the Earth * A hemisphere of Earth ** Northern Hemisphere ** Southern Hemisphere ** Eastern Hemisphere ** Western Hemisphere ** Land and water hemispheres * A half of the (geocentric) celes ...

T-tail aircraft

Development

Specifications

See also

References