Diamond Aircraft's ambitious plan for lightweight business jet faces indefinite delay

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Simple Flying | Simple Flying

By Sky Industry News

Nov 17, 2024

The Diamond D-JET was a single-engine, very light jet aircraft developed by Diamond Aircraft Industries. The Austrian company aimed to create a lightweight composite aircraft capable of seating up to five people, including the pilot. The prototype first flew in April 2006, with plans for testing and certification in subsequent years.

By April 2008, the third prototype had flown, marking significant progress in the program. Production units were expected by 2009 at an estimated price of $2 million.

However, the development faced challenges due to the Great Recession from 2007 to mid-2009, leading to funding issues and workforce reductions. Consequently, the D-JET program was suspended until May 2014 as part of company restructuring efforts.

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In December 2016, Wanfeng Aviation acquired a majority share of Diamond Aircraft Canada. This acquisition led to further suspension and reassessment of the D-JET program. Although there were suggestions that the program might resume, it remains shelved.

Diamond Aircraft Industries has roots tracing back to the early 1980s. The D-JET's design included features such as low drag characteristics and enhanced passenger comfort with reduced noise and vibration levels. It also offered ample storage space with externally accessible baggage compartments.

The aircraft could achieve high stability during flight maneuvers due to its engine placement near the center of gravity. It was powered by a Williams FJ33 turbofan engine generating up to 1,900 lbf (8.5 kN) thrust.

According to Diamond Aircraft: “The D-JET is designed specifically for the owner pilot... makes the D-JET the ideal Personal Light Jet.”

Key specifications included a maximum speed of 583 km/h (362 mph), cruise speed of 444 km/h (276 mph), range of 2,500 km (1,600 mi), service ceiling of 7,600 m (24,900 ft), and rate of climb at 8.467 m/s (1,666.7 ft/min).

The Full Authority Digital Engine Control system provided precise electronic controls for safety and efficiency. The system's dual-channel philosophy ensured redundancy for critical components.

Overall design considerations contributed to stable takeoff roles and efficient flight operations through features like large slotted wing flaps and a Garmin G1000 glass cockpit enhancing situational awareness.