Design and development
Diamond has targeted the aircraft at the owner-pilot market, seeing it as more practical for single-pilot operations than the Eclipse 500 and the Cessna Citation Mustang. By limiting the altitude to 25,000 feet, it will be safer if pressurization fails. Diamond intends the D-JET to have a lower operating cost than other very light jets[citation needed].
On November 9, 2006, at the AOPA Expo in Palm Springs, California, USA, Diamond announced that ATP Flight School (ATP) placed the first fleet order of 20.Diamond D-JETs. ATP will provide factory-approved training to D-JET purchasers beginning in 2008.Toronto-based Chartright Air Group ordered 10 D-JET aircraft with expected delivery beginning 2010.
In February, 2008 Diamond announced that the aircraft will be built in a new plant in London, Ontario, Canada. This announcement came after the Government of Canada announced it was giving the company a “Cdn$19.6 million strategic, repayable investment” and the Government of Ontario announced that it had given the company Cdn$11 million. Diamond claims that research and development costs for the D-JET have been Cdn$95.2 million and that the plant to build the aircraft will cost an additional $100 million.
In October 2008 Canadian charter operator SwiftJet announced that they had ordered five D-Jets with options for ten more. SwiftJet's intention is to offer air taxi service "anywhere and anytime to destinations around the world." SwiftJet currently operates one Dassault Falcon 20 in the charter role.
The Government of Ontario loan was contingent on a matching loan from the federal Canadian government, which was not approved and so the 213 laid off employees have not been rehired.
The D-JET was initially to be powered by one Williams FJ33-4A-15 turbofan engine. That 1,564 lbf (6.96 kN) thrust engine was found in early 2008 to produce insufficient bleed air for cabin pressurization and other services. As a result a decision was made to switch to the Williams FJ33-4A-19 turbofan engine, which produces 1,900 lbf (8.5 kN) of thrust instead.
The switch in engines delayed the certification schedule and moved the projected first customer deliveries of the aircraft into the spring of 2009.Diamond is also developing a military trainer variant of the D-JET that will likely feature Martin-Baker lightweight ejection seats and is intended to sell for under US$3M.
The first flight of the D-JET was made on 18 April 2006 from the London International Airport (ICAO: CYXU) in Ontario, Canada the homebase of Diamond’s North American division. The flight was piloted by test pilot Gérard Guillaumaud and lasted 1:06 hours. The aircraft's public debut was at Oshkosh in July 2006.At that time Diamond expected certification to be complete by the middle of 2009 with deliveries starting at the same time.
The Diamond D-JET, partially assembled at the Oakland NBAA, November 8, 2007.
On Friday, 20 July 2007 Diamond Aircraft announced the roll out of its second D-JET, serial number 002. Serial number 002 is the first D-JET intended to conform to the expected production configuration in its structural layout and aerodynamic design. D-JET prototype serial number 002 first flew on Friday 14 September 2007.
It was joined by D-JET Serial Number 003, which first flew on April 15, 2008.
Flight testing and program development was halted in the spring of 2011 as the company lacked funds to proceed. After a failed campaign for federal government support, private investment was found and test flight resumed in September 2011.
In July 2012 the company announced that 700 hours of flight testing had been completed, reaching Mach 0.56 (346 kn (641 km/h) true airspeed) along with 30,000 pressurization cycles on a test fuselage. Winglets had been added to the aircraft that improved roll control at all speeds, especially in the stall. With that addition the design was frozen and the company commenced building production tooling for the fourth serial number. At this time certification was forecast for late in 2013 with production deliveries to commence in the third quarter of 2014.
# Description:
The D-JET is a composite, five-seat, single-engine jet aircraft produced by Diamond Aircraft Industries. The aircraft is undergoing flight testing, and carries a price tag of approximately US$1.9 M. It cruises at 240 knots, and takes a modest 15 minutes to get to 25,000 feet, the service ceiling. The Diamond D-Jet is considered a very light jet (VLJ) and is produced by Diamond Aircraft Industries. It is a composite, five-seat, single-engine jet aircraft which typically seats four to five passengers. This suave aircraft features a luxurious cabin and the latest in cockpit and powerplant technology.
The cabin of the D-Jet is lush, open, and quite spacious, with a seating configuration of two plus three. The rear bench comfortably accommodates three people or offers first class comfort for two. This bench folds down in a 60/40 design and is made of the highest quality leather in a style that rivals the finest luxury automobiles. The D-Jet seating arrangement offers fantastic legroom, giving passengers the space and comfort of a more expensive aircraft. The standard vapor cycle air conditioning allows the aircraft to be pre-cooled prior to boarding and ensures that passengers travel in comfort. There are three cabin windows on each side to let in plenty of relaxing natural light.
Baggage capacity aboard the Diamond D-Jet is flexible and spacious, allowing more gear than other aircraft. There is a large aft luggage compartment for long items and dual nose compartments for other large baggage. Space behind the rear folding seats can hold items that need pressurization or which are needed in flight.
The D-JET is powered by one Williams FJ33-5A turbofan engine, featuring FADEC which offers improved operation, reliability, efficiency, and maintenance. The engine is capable of as much as 1,900 pounds of thrust, providing a maximum airspeed of 315 knots or 362 mph, and a maximum range of 1350 nautical miles, or 1553 statute miles. The aircraft also has straight wings with angular winglets, and a durable, low-drag composite construction.
The cockpit of the Diamond D-Jet features an ergonomic design and a three-panel Garmin G1000 glass cockpit, with dual 12\\" Primary Flight Displays and a central
15\\" Multifunction Display, for better readability than other VLJs. There is also a center console mounted FMS controller and Garmin\\\'s GFC700 automatic flight control system. The system features dual aDHaRS, dual magnetometers, dual GPS, dual WaaS enabled NaV/CoM/ GPS, Mode S transponder, TaWS-B, and dual audio panels for ultimate convenience and safety.
#Specifications (D-JET):
1)General characteristics
Crew: one, pilot
Capacity: four passengers
Length: 10.7 m (35 ft 1 in)
Wingspan: 11.5 m (37 ft 9 in)
Height: 3.6 m (11 ft 10 in)
Gross weight: 2,320 kg (5,115 lb)
Fuel capacity: 789.25 kilograms (1,740 lb)
Powerplant: 1 × Williams FJ33-4A-19 turbofan, 8.5 kN (1,900 lbf) thrust
2)Performance
Maximum speed: 583 km/h (362 mph; 315 kn)
Cruising speed: 444 km/h (276 mph; 240 kn)
Range: 2,500 km (1,553 mi; 1,350 nmi)
Service ceiling: 7,600 m (24,934 ft)
Rate of climb: 8.467 m/s (1,666.7 ft/min)
Time to altitude: 7,620 m (25,000 ft) in 15 minutes
3)Class: Compact Light Jet
Manufacturer: Diamond Aircraft
Model : Diamond D-Jet
Seats: 4 - 5
Cabin Length: 11.6
Cabin Width: 4.9
Cabin Height: 4.8
#D-Jet construction:
The D-Jet is of lightweight composite construction featuring low and swept-back wings with winglets and a T-tail.
Flight deck:
The glass cockpit is fitted with an electrically driven vapour cycle air-conditioning system allowing the aircraft to be pre-cooled prior to boarding.
The aircraft's avionics system is based on the Garmin G1000 avionics suite and includes a three-panel Garmin G1000 glass cockpit with Garmin GDU 1240A 12in primary flight displays (PFDs), a centrally mounted Garmin GDU 1500 15in multi-function display (MFD), Garmin flight management system with a centre console-mounted keypad controller and Garmin GFC 700 3-axis automatic flight control system. The autopilot control unit for the GFC 700 automatic flight is placed for easy access just below the glarescreen.
The communications and navigation suite comprises a dual Garmin GIA 63W VHF communications set, VHF navigator with an instrument landing system (ILS) localiser and glideslope, a wide-area augmentation system (FAA WAAS) certified global positioning system (GPS), dual Garmin GRS 77 solid-state attitude and heading reference system (AHRS), dual Garmin GDC 74 digital air data computers, Garmin GTX 33 mode-S transponder, dual pilot static system, active traffic advisory system (ATAS), a TAWS-B terrain awareness system, a satellite data link for weather and support for XM radio in-flight information and entertainment and a 406MHz emergency locator transmitter.
Systems fitted as a customer option include: Garmin GWX 68 weather radar system with 12in antenna, Becker 3500 automatic direction finder (ADF), and Honeywell KN63 DME distance measuring equipment.
#Cabin:
The cabin provides five seats in a two-plus-three configuration. The rear-seat bench can comfortably accommodate three people or two executive-class passengers.
#Safety:
The D-Jet is fitted with de-icing systems and other active and passive safety systems. Redundant systems include the dual power supplies. The certified ceiling altitude is 25,000ft.The D-Jet's dual electrical system is based on two independent buses. One electrical bus is powered by a 200A starter / generator; and the other is supplied by a 70A alternator.
Each electrical system runs independently and the aircraft can operate on either system alone. Each system also has its own battery, so that in the unlikely event that one of the power-generating sources fails, the battery will continue to provide power to that system for a tim
#Engine:
The aircraft is powered by a single 8.45kN turbofan FJ33-5A (formerly designated FJ33-19) engine supplied by Williams International. It was decided in March 2008 to upgrade to the FJ33-5A rather than the FJ33-15, rated at 6.96kN, fitted on prototype aircraft. The engine air inlets are visible in the wingroots. The engine is fitted with full authority digital engine control.
The fuel capacity is 1,100l in the US Federal Aviation Administration (FAA) certified version of the aircraft. In the European Aviation Safety Agency (EASA) certified version the fuel capacity is 790l.Landing gear
In May 2008, Diamond Aircraft announced the selection of Mecaer America to provide nose and main landing gear systems for the D-Jet.
#Performance:
The D-jet can fly at a maximum speed of 583km/h. The cruise speed is 444km/h. The range and service ceiling are 2,500km and 7,620m respectively. The aircraft weighs around 1,175kg and its maximum take-off weight is 2,000kg.
Regards
Monika Singh(B.Tech,ECE)
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