|
Aircraft Engine Starting
Many variations of aircraft engine starting have been used since the Wright brothers made their first powered flight in 1903. The methods used have been designed for weight saving, simplicity of operation and reliability. Early piston engines were started by hand, with geared hand starting, electrical and cartridge-operated systems for larger engines being developed between the wars. Gas turbine aircraft engines such as turbojets, turboshafts and turbofans often use air/pneumatic starting, with the use of ''bleed air'' from built-in auxiliary power units (APUs) or external air compressors now seen as a common starting method. Often only one engine needs be started using the APU (or remote compressor). After the first engine is started using APU bleed air, ''cross-bleed air'' from the running engine can be used to start the remaining engine(s). Piston engines Hand starting/propeller swinging Hand starting of aircraft piston engines by swinging the propeller is the oldest and sim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Defense
Defense or defence may refer to: Tactical, martial, and political acts or groups * Defense (military), forces primarily intended for warfare * Civil defense, the organizing of civilians to deal with emergencies or enemy attacks * Defense industry, industry which manufactures and sells weapons and military technology * Self-defense, the use of force to defend oneself * Haganah (Hebrew for "The Defence"), a paramilitary organization in British Palestine * National security, security of a nation state, its citizens, economy, and institutions, as a duty of government ** Defence diplomacy, pursuit of foreign policy objectives through the peaceful employment of defence resources ** Ministry of defence or department of defense, a part of government which regulates the armed forces ** Defence minister, a cabinet position in charge of a ministry of defense * International security, measures taken by states and international organizations to ensure mutual survival and safety Sports * Def ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bentfield Hucks
Bentfield Charles Hucks (25 October 1884 – 7 November 1918) was an aviation innovator in the early 20th century. As well as test flying numerous aircraft types, he was the first Briton to perform a loop in an aircraft, which he performed in his Blériot at Hendon airfield in September 1913. He is also credited with the Hucks starter and many feats of test flying during the First World War, while working at Hendon for Airco. Life Hucks was born on 25 October 1884 at Bentfield End, Stansted, Essex the son of William and Kate Hucks. Hucks gained his Royal Aero Club certificate (number 91) in May, 1911, flying a Blackburn monoplane. He joined the Royal Flying Corps (RFC) when war broke out in August, 1914, and was sent to the Western Front. But he was sent home invalid after an attack of pleurisy before working as a test pilot at Hendon, north-west London. He died on 7 November 1918, just days before the end of the First World War, of double pneumonia. He was buried on the easter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
