David Warren (inventor)


David Ronald de Mey Warren was an Australian scientist, best known for inventing and developing the flight data recorder and cockpit voice recorder.

Early life

He was born to Rev Hubert and Ellie Warren and had three siblings. He was educated at Launceston Church Grammar School. Hubert died in an air crash over the Bass Strait in 1934.
He earned a Bachelor of Science degree with Honours from the University of Sydney, a PhD in fuels and energy from Imperial College London, a Diploma of Imperial College, and a Diploma of Education from the University of Melbourne.

Career

;Summary
Warren worked at what are now the Defence Science and Technology Organisation's Aeronautical Research Laboratories in Melbourne from 1952 to 1983, rising to the level of principal research scientist. While there, he came up with the idea for the cockpit voice recorder while investigating a crash of the world's first commercial jet airliner, the Comet, in 1953, after seeing a miniature voice recorder at a trade show. "If a businessman had been using one of these in the plane and we could find it in the wreckage and we played it back, we'd say, 'We know what caused this.'", Warren later recalled. "Any sounds that were relevant to what was going on would be recorded and you could take them from the wreckage." While devices had been previously used to record certain flight parameters, they did not include voice recording, and were not reusable, and therefore were not practical for routine commercial flights. Warren's invention, which relied on magnetic recording media, allowed easy erasing and re-recording, which made it practical for routine line service. Warren's concept of cockpit voice recording added a new dimension to instrument data in flight recorders, and has proved extremely valuable for accident investigation. Some accidents where the CVR played a prominent role were solved not by the crew's recorded voices, but by other sounds incidentally recorded on the CVR, which provided a vital clue to the accident cause.

Committees, honours, awards and recognition

;Committees
;Awards and Honours
;Recognition
In November 2008, Qantas named one of their Airbus A380s after Warren in honour of his services to aviation.
Warren died 19 July 2010, at age 85, in Melbourne. He was buried in a casket bearing the label "Flight Recorder Inventor; Do Not Open".
In June 2012, the ACT Government named a road, David Warren Road, in the suburb of Hume.
David Warren was inducted into the Australian Aviation Hall of Fame on 16 November 2013.
On 25 March 2014, the Defence Science and Technology Organisation renamed their Canberra headquarters the "David Warren Building".