Cessna Citation Hemisphere
   HOME

TheInfoList



Click Here for Items Related To - Cessna Citation Hemisphere
OR:
Cessna Citation Hemisphere on:   [Wikipedia]   [Google]   [Amazon]

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 pu ...
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 ...
.
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 (NBAA) conference with the widest cabin in its class, it was expected to fly in 2019. Although the
Snecma 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 ...
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 Pari ...
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 ...
flight control system. The Silvercrest
axial Axial may refer to: * one of the anatomical directions describing relationships in an animal body * In geometry: :* a geometric term of location :* an axis of rotation * In chemistry, referring to an axial bond * a type of modal frame, in music * ...
-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, 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 ...
in the segment. Textron is confident Safran can resolve the problems before the 2019 first flight. 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 announced the purchase of up to 150 Hemispheres, priced at $35 million each, along 175 Citation Longitude, ordered for $26 million each. In July 2019, Textron suspended the development as 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 ...
turbofans did not meet objectives. In October 2019, Textron reaffirmed that the project was still suspended, but not terminated.


Specifications


See also


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 engi ...
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