Jet Aircraft
A jet aircraft (or simply jet) is an aircraft (nearly always a fixed-wing aircraft) propelled by jet engines. Whereas the engines in propeller-powered aircraft generally achieve their maximum efficiency at much lower speeds and altitudes, jet engines achieve maximum efficiency at speeds close to or even well above the speed of sound. Jet aircraft generally cruise most efficiently at about Mach 0.8 (981 km/h (610 mph)) and at altitudes around 10,000–15,000 m (33,000–49,000 ft) or more. The idea of the jet engine was not new, but the technical problems involved could not begin to be solved until the 1930s. Frank …
WikipediaPublications
The National Archives · 1 January 1979 English
A file containing documents relating to the Soviet armed forces. Subjects covered in the file include the rapid expansion of the Soviet navy; a British Parliamentary Question on the strength …
aero-engine technology current Soviet civil jet aircraft are out-dated, and the programme to build the …
The National Archives · 1 January 1978 English
than those by operational units (squadrons of jet aircraft for example). I 3. On the specific question …
The National Archives · 1 January 1978 English
A file of documents concerning defence sales to Yugoslavia. Subjects discussed in the file include arrangements for exchanges of visits by British and Yugoslav defence companies; the organisation of military …
purchase of US ammunition, radios, radar, jet aircraft engines and other weapons and equipment. The …
The National Archives · 1 January 1978 English
Svalbard. « 28 August 1978 A Soviet twin-engined jet aircraft with a crew of seven, thought to bo a Badger …
The National Archives · 1 January 1978 English
A file of correspondence concerning political relations between Albania and the Soviet Union. The documents cover Soviet press interest in the deterioration in relations between Albania and China; and Soviet …
65-seater twin- ^ ^ to Mr Hoxha. engined Jet aircraft. The j X The Albanian leader said flight …
The National Archives · 1 January 1978 English
Protocol for the joint manufacture of BAC 1-11 jet aircraft signed with British Aerospace. June 8-10 … Protocol for the joint manufacture of BAC 1-11 jet aircraft signed with British Aerospace. 8-10 Visit by …
The National Archives · 1 January 1977 English
g j o n s . composed of 85,000 men and 560 jet aircraft. AS r egards restrictions on transfer of technology …
The National Archives · 1 January 1977 English
been shown Mirage, Jaguar, Transall and Alfa-Jet aircraft, and Milan and Crotale missiles. According …
The National Archives · 1975 English
A file of correspondence and reports concerning military relations between Romania and the United Kingdom. The documents cover a visit to Romania by the British Defence Secretary, Roy Mason; details …
air transport. When selecting the new civil jet aircraft, Romania had expressed preference for the BAC …
The National Archives · 1975 English
STATES THAT A POSSIBLE SALE I OF 200 HARRIER JET AIRCRAFT IS NOW PROHIBITED AND THE ROLLS I ROYCE SPEY …
