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90-646: British Aerospace plc ( BAe ) was a British aircraft , munitions and defence-systems manufacturer that was formed in 1977. Its head office was at Warwick House in the Farnborough Aerospace Centre in Farnborough, Hampshire . It purchased Marconi Electronic Systems , the defence electronics and naval shipbuilding subsidiary of the General Electric Company , in 1999 to form BAE Systems . The company has its origins in

180-400: A Pratt & Whitney Canada PT6 , and an under-speed governor on a Honeywell TPE331 . The turboprop is also distinguished from other kinds of turbine engine in that the fuel control unit is connected to the governor to help dictate power. To make the engine more compact, reverse airflow can be used. On a reverse-flow turboprop engine, the compressor intake is at the aft of the engine, and

270-415: A turbojet or turbofan , the engine's exhaust gases do not provide enough power to create significant thrust, since almost all of the engine's power is used to drive the propeller. Exhaust thrust in a turboprop is sacrificed in favor of shaft power, which is obtained by extracting additional power (beyond that necessary to drive the compressor) from turbine expansion. Owing to the additional expansion in

360-597: A 1999–2000 Australian Senate Inquiry into the health and flight safety issues relating to oil fumes on the British Aerospace 146 . The film also contains an Australian Senator's speech about money being paid by BAe for silence on the fumes issue. Aircraft manufacturer The aircraft industry is the industry supporting aviation by building aircraft and manufacturing aircraft parts for their maintenance . This includes aircraft and parts used for civil aviation and military aviation . Most production

450-520: A bombing raid. In 1941, the engine was abandoned due to war, and the factory converted to conventional engine production. The first mention of turboprop engines in the general public press was in the February 1944 issue of the British aviation publication Flight , which included a detailed cutaway drawing of what a possible future turboprop engine could look like. The drawing was very close to what

540-442: A governor, and overspeed governor, and a fuel-topping governor. The governor works in much the same way a reciprocating engine propeller governor works, though a turboprop governor may incorporate beta control valve or beta lift rod for beta operation and is typically located in the 12 o'clock position. There are also other governors that are included in addition depending on the model, such as an overspeed and fuel topping governor on

630-410: A mode typically consisting of zero to negative thrust, is used for all ground operations aside from takeoff. The Beta mode is further broken down into 2 additional modes, Beta for taxi and Beta plus power. Beta for taxi as the name implies is used for taxi operations and consists of all pitch ranges from the lowest alpha range pitch, all the way down to zero pitch, producing very little to zero-thrust and

720-592: A prevailing practice; European governments wished to see the merger of their defence manufacturers into a single entity, a European Aerospace and Defence Company. This ambition led to numerous reports linking various European defence groups – mainly with each other but also with American defence contractors. In July 1998, merger discussions began between BAe and DASA. Terms for such a merger had been reportedly agreed between British Aerospace Chairman Richard Evans and DASA CEO Jürgen Schrempp in December 1998. However, when

810-594: A short time. Similarly, low-rate production of the BAC One-Eleven jet airliner, the Strikemaster two-seat military jet trainer/attack aircraft, and the iconic Concorde supersonic airliner also continued. On 29 July 1976, less than a year prior to BAe's formation, the contract for production of the first batch of the Panavia Tornado , an advanced nuclear-capable fighter bomber, was signed. It

900-422: A similar alliance with either Embraer with its E-jet E2 or Mitsubishi Heavy Industries and its MRJ . On 21 December, Boeing and Embraer confirmed to be discussing a potential combination with a transaction subject to Brazilian government regulators, the companies' boards and shareholders approvals. The weight of Airbus and Boeing could help E2 and CSeries sales but the 100-150 seats market seems slow. As

990-581: A small amount of air by a large degree, a low disc loading (thrust per unit disc area) increases the aircraft's energy efficiency , and this reduces the fuel use. Propellers work well until the flight speed of the aircraft is high enough that the airflow past the blade tips reaches the speed of sound. Beyond that speed, the proportion of the power that drives the propeller that is converted to propeller thrust falls dramatically. For this reason turboprop engines are not commonly used on aircraft that fly faster than 0.6–0.7 Mach , with some exceptions such as

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1080-499: A solely British company, compared to the prospective Anglo-German company that would have resulted from merging with DASA, was promoted as having superior prospects for further penetration of the lucrative defence market of the United States. The newly combined company, which was initially referred to as "New British Aerospace", was officially formed on 30 November 1999; it is named BAE Systems . There have been allegations that

1170-515: A special program to restore U.S. competitiveness across all U.S. industries, Project Socrates , contributed to employment growth as the U.S. aerospace industry captured 72 percent of world aerospace market. By 1999 U.S. share of the world market fell to 52 percent. In the European Union , aerospace companies such as Airbus , Safran , BAE Systems , Thales , Dassault , Saab AB , Terma A/S , Patria Plc and Leonardo are participants in

1260-591: A stainless steel leading edge, giving it different flex characteristics from the AV-8B. In December 1989, the first RAF squadron to be equipped with the Harrier II was declared operational. In 1979, BAe officially joined the multinational aircraft manufacturer Airbus and acquired a 20% share in the venture, the move effectively reversed a decision made ten years prior in which the UK government had withdrawn its support for

1350-588: A temporary collaboration to produce a single design as per its original mission statement; it had become a long-term brand for the development of further aircraft. By the late 1980s, work had begun on a pair of new wide-body airliners, the biggest to be produced at this point under the Airbus name; these would be launched in the 1990s as the Airbus A330 and the Airbus A340 . During the 1983 Paris Air Show ,

1440-591: A test-bed not intended for production. It first flew on 20 September 1945. From their experience with the Trent, Rolls-Royce developed the Rolls-Royce Clyde , the first turboprop engine to receive a type certificate for military and civil use, and the Dart , which became one of the most reliable turboprop engines ever built. Dart production continued for more than fifty years. The Dart-powered Vickers Viscount

1530-578: A wholly owned subsidiary of BAe Dynamics in 1998. In 1995, Saab Military Aircraft and BAe signed an agreement for the joint development and marketing of the export version of the JAS 39 Gripen . In 1996, BAe and Matra Defense agreed to merge their missile businesses into a joint venture called Matra BAe Dynamics . In 1997, BAe joined the Lockheed Martin X-35 Joint Strike Fighter team. The following year, BAe acquired

1620-459: Is Japan ), strong transportation infrastructure (#5, #1 is Hong Kong ), a healthy economy (#10, #1 is China ), but high costs (#7, #1 is Denmark ) and average tax policy (#36, #1 is Qatar ). Following were Canada , Singapore , Switzerland and United Kingdom . Within the US, the most attractive was Washington state , due to the best Industry (#1), leading Infrastructure (#4, New Jersey

1710-403: Is #1) and Economy (#4, Texas is #1), good labor (#9, Massachusetts is #1), average tax policy (#17, Alaska is #1) but is costly (#33, Montana is #1). Washington is tied to Boeing Commercial Airplanes , earning $ 10.3 billion, is home to 1,400 aerospace-related businesses, and has the highest aerospace jobs concentration. Following are Texas, Georgia , Arizona and Colorado . In the US,

1800-516: Is based. Several consolidations took place in the aerospace and defense industries over the last few decades. Airbus prominently illustrated the European airliner manufacturing consolidation in the late 1960s. Between 1988 and 2010, more than 5,452 mergers and acquisitions with a total known-value of US$ 579 billion were announced worldwide. In 1993, then United States Secretary of Defense Les Aspin and his deputy William J. Perry held

1890-402: Is compressed by the compressor. Fuel is then added to the compressed air in the combustor, where the fuel-air mixture then combusts . The hot combustion gases expand through the turbine stages, generating power at the point of exhaust. Some of the power generated by the turbine is used to drive the compressor and electric generator . The gases are then exhausted from the turbine. In contrast to

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1980-471: Is done pursuant to type certificates and Defense Standards issued by a government body. This term has been largely subsumed by the more encompassing term: " aerospace industry". In 2015 the aircraft production was worth US$ 180.3 billion: 61% airliners , 14% business and general aviation , 12% military aircraft , 10% military rotary wing and 3% civil rotary wing; while their MRO was worth $ 135.1 Bn or $ 315.4 Bn combined. The global aerospace industry

2070-407: Is that it can also be used to generate reverse thrust to reduce stopping distance on the runway. Additionally, in the event of an engine failure, the propeller can be feathered , thus minimizing the drag of the non-functioning propeller. While the power turbine may be integral with the gas generator section, many turboprops today feature a free power turbine on a separate coaxial shaft. This enables

2160-405: Is the successor company to numerous British aircraft manufacturers which merged throughout the second half of the 20th century. Many of these mergers followed the 1957 Defence White Paper . Marconi Electronic Systems , a subsidiary of the General Electric Company plc , was acquired by British Aerospace for US$ 12.3 billion in 1999 merger, to form BAE Systems . In 2002, when Fairchild Dornier

2250-421: Is typically accessed by moving the power lever to a beta for taxi range. Beta plus power is a reverse range and produces negative thrust, often used for landing on short runways where the aircraft would need to rapidly slow down, as well as backing operations and is accessed by moving the power lever below the beta for taxi range. Due to the pilot not being able to see out of the rear of the aircraft for backing and

2340-459: The A320 . Tier 1 consolidation also affects engine manufacturers : GE Aerospace acquired Avio in 2013 and Rolls-Royce took control of ITP Aero . Turboprop A turboprop is a turbine engine that drives an aircraft propeller . A turboprop consists of an intake , reduction gearbox , compressor , combustor , turbine , and a propelling nozzle . Air enters the intake and

2430-510: The Airbus A380 , less than 100 major suppliers outsource 60% of its value, even 80% on the A350 . Boeing embraced an aggressive Tier 1 model for the 787 but with its difficulties began to question why it was earning lower margins than its suppliers while it seemed to take all the risk, ensuing its 2011 Partnering for Success initiative, as Airbus initiated its own Scope+ initiative for

2520-697: The Aircraft and Shipbuilding Industries Act 1977 , which called for the nationalisation and merger of the British Aircraft Corporation , Hawker Siddeley Aviation , Hawker Siddeley Dynamics and Scottish Aviation . On 29 April 1977, the new entity was formed in the United Kingdom as a statutory corporation. Under the provisions of the British Aerospace Act 1980 (c. 26), on 1 January the statutory corporation

2610-515: The BAe 146 , a short-haul regional airliner that had been previously worked on by Hawker Siddeley. The company marketed it as a quiet and economic turbofan -powered compact airliner that could replace the previous generation of turboprop -powered feeder aircraft. In 1982, the first completed aircraft made its first flight. Upon its launch into service the following year, it was hailed as being "the world's quietest jetliner". In 1993, an upgraded model of

2700-578: The Bombardier Global Express pioneered the "Tier 1" supply chain model inspired by automotive industry , with 10-12 risk-sharing limited partners funding around half of the development costs. The Embraer E-Jet followed in the late 1990s with fewer than 40 primary suppliers. Tier 1 suppliers were led by Honeywell , Safran , Goodrich Corporation and Hamilton Sundstrand . In the 2000s, Rolls-Royce reduced its supplier count after bringing in automotive supply chain executives. On

2790-479: The CSeries partnership between Airbus and Bombardier Aerospace could trigger a daisy chain of reactions towards a new order. Airbus gets a new, efficient model at the lower end of the narrowbody market which provides the bulk of airliner profits and can abandon the slow selling A319 while Bombardier benefits from the growth in this expanded market even if it holds a smaller residual stake. Boeing could forge

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2880-668: The Department of Defense and NASA are the two biggest consumers of aerospace technology and products. The Bureau of Labor Statistics of the United States reported that the aerospace industry employed 444,000 wage and salary jobs in 2004, many of which were in Washington and California, this marked a steep decline from the peak years during the Reagan Administration when total employment exceeded 1,000,000 aerospace industry workers. During that period of recovery

2970-634: The P-3 Orion , and the C-130 Hercules military transport aircraft. The first turbine-powered, shaft-driven helicopter was the Kaman K-225 , a development of Charles Kaman 's K-125 synchropter , which used a Boeing T50 turboshaft engine to power it on 11 December 1951. December 1963 saw the first delivery of Pratt & Whitney Canada's PT6 turboprop engine for the then Beechcraft 87, soon to become Beechcraft King Air . 1964 saw

3060-841: The Piper Meridian , Socata TBM , Pilatus PC-12 , Piaggio P.180 Avanti , Beechcraft King Air and Super King Air . In April 2017, there were 14,311 business turboprops in the worldwide fleet. Between 2012 and 2016, the ATSB observed 417 events with turboprop aircraft, 83 per year, over 1.4 million flight hours: 2.2 per 10,000 hours. Three were "high risk" involving engine malfunction and unplanned landing in single‑engine Cessna 208 Caravans , four "medium risk" and 96% "low risk". Two occurrences resulted in minor injuries due to engine malfunction and terrain collision in agricultural aircraft and five accidents involved aerial work: four in agriculture and one in an air ambulance . Jane's All

3150-614: The Tupolev Tu-114 can reach 470 kn (870 km/h; 540 mph). Large military aircraft , like the Tupolev Tu-95 , and civil aircraft , such as the Lockheed L-188 Electra , were also turboprop powered. The Airbus A400M is powered by four Europrop TP400 engines, which are the second most powerful turboprop engines ever produced, after the 11 MW (15,000 hp) Kuznetsov NK-12 . In 2017,

3240-403: The Tupolev Tu-95 . However, propfan engines, which are very similar to turboprop engines, can cruise at flight speeds approaching 0.75 Mach. To maintain propeller efficiency across a wide range of airspeeds, turboprops use constant-speed (variable-pitch) propellers. The blades of a constant-speed propeller increase their pitch as aircraft speed increases. Another benefit of this type of propeller

3330-508: The "Last Supper" at the Pentagon with contractors executives who were told that there were twice as many military suppliers as he wanted to see: $ 55 billion in military–industry mergers took place from 1992 to 1997, leaving mainly Boeing , Lockheed Martin , Northrop Grumman and Raytheon . Boeing bought McDonnell Douglas for US$ 13.3 billion in 1996. Raytheon acquired Hughes Aircraft Company for $ 9.5 billion in 1997. BAE Systems

3420-564: The 500th aircraft to be completed was delivered to West Germany on 19 December 1987. Production of the Tornado ended in 1998, the final batch being delivered to the Royal Saudi Air Force , that had ordered a total of 96 IDS Tornados. Aviation author Jon Lake noted that "The Trinational Panavia Consortium produced just short of 1,000 Tornados, making it one of the most successful postwar bomber programs". In 1978, BAe relaunched

3510-502: The Airbus consortium. Airbus' first aircraft, the A300 , had been received with little initial demand, but orders for the airliner had picked up in the late 1970s. By 1979, the consortium had 256 orders for A300, and Airbus had launched its second airliner, the A310 , less than 12 months prior to BAe formally joining the consortium. As time went on, it was becoming clear that Airbus was no longer

3600-552: The Al Yamamah contracts were a result of bribes ("douceurs") to members of the Saudi royal family and government officials. Some allegations suggested that the former Prime Minister's son Mark Thatcher may have been involved; he has strongly denied receiving payments or exploiting his mother's connections in his business dealings. The National Audit Office investigated the contracts and has so far never released its conclusions –

3690-569: The BAe 146, referred to as the Avro RJ series, superseded the original; changes included the replacement of the original Lycoming ALF 502 turbofan engines by higher-thrust LF 507 turbofan engines, which were housed in redesigned nacelles . The Avro RJ series also featured a modernised cockpit with EFIS replacing the analogue ADI, HSI, and engine instrumentation. Production of the Avro RJ ended with

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3780-653: The British General Electric Company (GEC) put its defence electronics business Marconi Electronic Systems (MES) up for sale on 22 December 1998, BAe's management opted to abandon the DASA merger in favour of purchasing its British rival. During 2004, Evans stated that his fear was that an American defence contractor would acquire MES and challenge both British Aerospace and DASA. Schrempp was angered by BAe's reversal, and opted to pursue other partner companies for DASA to merge with. On 11 June 1999,

3870-698: The CSeries, renamed A220, and E-jet E2 are more capable than their predecessors, they moved closer to the lower end of the narrowbodies . In 2018, the four Western airframers combined into two within nine months as Boeing acquired 80% of Embraer's airliners for $ 3.8 billion on July 5. On April 3, 2020, Raytheon and United Technologies Corporation (except Otis Worldwide , leaving Rockwell Collins and engine maker Pratt and Whitney ) merged to form Raytheon Technologies Corporation , with combined sales of $ 79 billion in 2019. The most prominent unions between 1995 and 2020 include those of Boeing and McDonnell Douglas;

3960-822: The French, German and Spanish parts of EADS; and United Technologies with Rockwell Collins then Raytheon, but many mergers projects did not went through: Textron-Bombardier, EADS-BAE Systems, Hawker Beechcraft-Superior Aviation, GE-Honeywell, BAE Systems-Boeing (or Lockheed Martin), Dassault-Aerospatiale, Safran-Thales, BAE Systems-Rolls-Royce or Lockheed Martin–Northrop Grumman. The largest aerospace suppliers are United Technologies with $ 28.2 billion of revenue, followed by GE Aviation with $ 24.7 billion, Safran with $ 22.5 billion, Rolls-Royce Holdings with $ 16.9 billion, Honeywell Aerospace with $ 15.2 billion and Rockwell Collins including B/E Aerospace with $ 8.1 billion. Electric aircraft development could generate large changes for

4050-663: The Rover Group was sold to BMW and British Aerospace Space Systems was sold to Matra Marconi Space . In 1998, BAe's shareholding of Orange plc was reduced to 5%. The Orange shareholding was a legacy of the 30% stake in Hutchison Telecommunications (UK) Ltd. In 1994, BAeSEMA, Siemens Plessey and GEC-Marconi formed UKAMS Limited as part of the Principal Anti-Air Missile System (PAAMS) consortium. UKAMS would become

4140-533: The Soviet Union had the technology to create the airframe for a jet-powered strategic bomber comparable to Boeing's B-52 Stratofortress , they instead produced the Tupolev Tu-95 Bear, powered with four Kuznetsov NK-12 turboprops, mated to eight contra-rotating propellers (two per nacelle) with supersonic tip speeds to achieve maximum cruise speeds in excess of 575 mph, faster than many of

4230-573: The Spanish aircraft company CASA a memorandum of understanding for such a merger. On 14 October 1999, DASA agreed to merge with Aérospatiale-Matra to create the European Aeronautic Defence and Space Company (EADS). 10 July 2000 was "day one" for the new company, which became the world's second-largest aerospace company after Boeing and the second-largest European arms manufacturer after BAE Systems. The GEC merger to create

4320-401: The UK operations of Siemens Plessey Systems (SPS) from Siemens , while DASA purchased SPS' German assets. In the 1990s, BAe was the largest exporter based in the United Kingdom; a Competition Commission report released in 2005 calculated a ten-year aggregate figure of £45 billion, with defence sales accounting for approximately 80%. In the late 1990s, European defence consolidation became

4410-1130: The United States ( Boeing ), Montreal and Toronto in Canada ( Bombardier , Pratt & Whitney Canada ), Toulouse and Bordeaux in France ( Airbus , Dassault , ATR ), Seville in Spain and Hamburg in Germany ( Airbus ), the North-West of England and Bristol in Britain ( Airbus and AgustaWestland ), Komsomolsk-on-Amur and Irkutsk in Russia ( Sukhoi , Beriev ), Kyiv and Kharkiv in Ukraine ( Antonov ), Nagoya in Japan ( Mitsubishi Heavy Industries Aerospace and Kawasaki Heavy Industries Aerospace ), as well as São José dos Campos in Brazil where Embraer

4500-506: The aerospace suppliers. On 26 November 2018, United Technologies announced the completion of its Rockwell Collins acquisition, renaming systems supplier UTC Aerospace Systems as Collins Aerospace , for $ 23 billion of sales in 2017 and 70,000 employees, and $ 39.0 billion of sales in 2017 combined with engine manufacturer Pratt & Whitney . Before the 1980s/1990s, aircraft and aeroengine manufacturers were vertically integrated . Then Douglas aircraft outsourced large aerostructures and

4590-623: The airframe's work-share in terms of man-hours. Production took place at McDonnell Douglas' facilities in suburban St Louis , Missouri , and manufacturing by BAe at its Kingston and Dunsfold facilities in Surrey , England. The variant procured for the RAF, which was known as the BAe Harrier II , featured many differences, including avionics fit, armaments and equipment; the wing of the GR5 featured

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4680-414: The amount of debris reverse stirs up, manufacturers will often limit the speeds beta plus power may be used and restrict its use on unimproved runways. Feathering of these propellers is performed by the propeller control lever. The constant-speed propeller is distinguished from the reciprocating engine constant-speed propeller by the control system. The turboprop system consists of 3 propeller governors ,

4770-630: The basis for the multinational Eurofighter Typhoon . In 1986, in conjunction Alenia Aeronautica , CASA and DASA , BAe formed Eurofighter GmbH for the development and production of the Eurofighter. The multinational organisation's head office was established in Hallbergmoos , Bavaria, Germany. The maiden flight of the Eurofighter prototype took place in Bavaria on 27 March 1994, flown by DASA chief test pilot Peter Weger. On 30 January 1998,

4860-699: The committee concludes that the sale to BAe may well have been the best solution for the government." In 1991, BAe acquired a 30% interest in Hutchison Telecommunications through a stock swap deal, where Hutchison was given a controlling stake of 65% in BAe's wholly owned subsidiary Microtel Communications Ltd . In August 1991, BAe formed a naval systems joint venture, BAeSEMA , with the Sema Group . BAe acquired Sema's 50% share in 1998. That year also saw BAe begin to experience major difficulties. BAe saw its share price fall below 100p for

4950-407: The exhaust is situated forward, reducing the distance between the turbine and the propeller. Unlike the small-diameter fans used in turbofan engines, the propeller has a large diameter that lets it accelerate a large volume of air. This permits a lower airstream velocity for a given amount of thrust. Since it is more efficient at low speeds to accelerate a large amount of air by a small degree than

5040-553: The final four aircraft being delivered in late 2003; a total of 173 Avro RJ aircraft was delivered between 1993 and 2003. BAe developed several advanced models of the Harrier family. In 1978, the Royal Navy received the first BAe Sea Harrier of an initial order for 24. The Sea Harrier was declared operational three years later, being initially embarked on both the first Invincible class aircraft carrier HMS Invincible , and

5130-499: The first jet aircraft and comparable to jet cruising speeds for most missions. The Bear would serve as their most successful long-range combat and surveillance aircraft and symbol of Soviet power projection through to the end of the 20th century. The USA used turboprop engines with contra-rotating propellers, such as the Allison T40 , on some experimental aircraft during the 1950s. The T40-powered Convair R3Y Tradewind flying-boat

5220-564: The first deliveries of the Garrett AiResearch TPE331 , (now owned by Honeywell Aerospace ) on the Mitsubishi MU-2 , making it the fastest turboprop aircraft for that year. In contrast to turbofans , turboprops are most efficient at flight speeds below 725 km/h (450 mph; 390 knots) because the jet velocity of the propeller (and exhaust) is relatively low. Modern turboprop airliners operate at nearly

5310-562: The first production contract for the Eurofighter was signed between Eurofighter GmbH, engine manufacturer Eurojet and the NATO Eurofighter and Tornado Management Agency , the organisation set up to manage the procurement of the aircraft. On 26 September 1985, the UK and Saudi Arabian governments signed the Al-Yamamah arms deal with BAe as prime contractor. The contracts, extended in the 1990s and never fully detailed, involved

5400-493: The first time. On 9 September 1991, the company issued a profits warning and later that week "bungled" the launch of a £432 million rights issue . On 25 September 1991 BAe directors led by CEO Richard Evans ousted the Chairman Professor Sir Roland Smith in a move described by The Independent as "one of the most spectacular and brutal boardroom coups witnessed in many years." Evans described

5490-465: The future Rolls-Royce Trent would look like. The first British turboprop engine was the Rolls-Royce RB.50 Trent , a converted Derwent II fitted with reduction gear and a Rotol 7 ft 11 in (2.41 m) five-bladed propeller. Two Trents were fitted to Gloster Meteor EE227 — the sole "Trent-Meteor" — which thus became the world's first turboprop-powered aircraft to fly, albeit as

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5580-524: The global aerospace industry and research effort. In Russia , large aerospace companies like Oboronprom and the United Aircraft Corporation (encompassing Mikoyan , Sukhoi , Ilyushin , Tupolev , Yakovlev , and Irkut , which includes Beriev ) are among the major global players in this industry. Important locations of the civil aerospace industry worldwide include Seattle , Wichita, Kansas , Dayton, Ohio and St. Louis in

5670-637: The largest industrial bases in 2017 were the United States with $ 408.4 billion (representing 49% of the whole), followed by France with $ 69 billion (8.2%), then China with $ 61.2 billion (7.3%), the United Kingdom with $ 48.8 billion (5.8%), Germany with $ 46.2 billion (5.5%), Russia with $ 27.1 billion (3.2%), Canada with $ 24 billion (2.9%), Japan with $ 21 billion (2.5%), Spain with $ 14 billion (1.7%) and India with $ 11 billion (1.3%). These ten countries represent $ 731 billion or 87.2% of

5760-570: The launch of the Experimental Aircraft Programme (EAP) to develop and fly an advanced fighter technology demonstrator was announced; at this point, the effort was intended to be a partnership between Britain and several of its European neighbours, including West Germany and Italy. The resulting aircraft, the British Aerospace EAP , ended up being primarily developed by BAe as a private venture; it formed

5850-509: The most widespread turboprop airliners in service were the ATR 42 / 72 (950 aircraft), Bombardier Q400 (506), De Havilland Canada Dash 8 -100/200/300 (374), Beechcraft 1900 (328), de Havilland Canada DHC-6 Twin Otter (270), Saab 340 (225). Less widespread and older airliners include the BAe Jetstream 31 , Embraer EMB 120 Brasilia , Fairchild Swearingen Metroliner , Dornier 328 , Saab 2000 , Xian MA60 , MA600 and MA700 , Fokker 27 and 50 . Turboprop business aircraft include

5940-418: The older HMS Hermes . Following their decisive role in the 1982 Falklands War , several of the lessons learnt from the conflict shaped a new upgrade programme for the fleet authorised in 1984, resulting in the Sea Harrier FRS.2 (later known as FA2 ). The first flight of the prototype took place in September 1988 and a contract was signed for 29 upgraded aircraft in December of that year. The Sea Harrier FA2

6030-409: The only NAO report ever to be withheld. The BBC's Newsnight observed that it is ironic that the once classified report analysing the construction of MI5 's Thames House and MI6 's Vauxhall Cross headquarters has been released, but the Al Yamamah report is still deemed too sensitive. The 2007 documentary film Welcome Aboard Toxic Airlines contained evidence that vital data was withheld from

6120-437: The original offer price. The second phase occurred in May 1985, in which 48.4% shares were sold; this sale was 5.4 times subscribed and the first day closing price was 11% above the initial offer price. The British Government maintained a £1 golden share , which allowed it to veto foreign control of the board or company. British Aerospace inherited a number of live development programmes from its predecessors. Scottish Aviation

6210-427: The power section (turbine and gearbox) to be removed and replaced in such an event, and also allows for less stress on the start during engine ground starts. Whereas a fixed shaft has the gearbox and gas generator connected, such as on the Honeywell TPE331 . The propeller itself is normally a constant-speed (variable pitch) propeller type similar to that used with larger aircraft reciprocating engines , except that

6300-451: The propeller to rotate freely, independent of compressor speed. Alan Arnold Griffith had published a paper on compressor design in 1926. Subsequent work at the Royal Aircraft Establishment investigated axial compressor-based designs that would drive a propeller. From 1929, Frank Whittle began work on centrifugal compressor-based designs that would use all the gas power produced by the engine for jet thrust. The world's first turboprop

6390-403: The propeller-control requirements are very different. Due to the turbine engine's slow response to power inputs, particularly at low speeds, the propeller has a greater range of selected travel in order to make rapid thrust changes, notably for taxi, reverse, and other ground operations. The propeller has 2 modes, Alpha and Beta. Alpha is the mode for all flight operations including takeoff. Beta,

6480-414: The rationale of diversification was sound (to shield the company from cyclical aerospace and defence markets) the struggling company could not afford to continue the position: "We simply could not afford to carry two core businesses, cars and aerospace. At one point Rover was eating up about £2 billion of our banking capacity." BAe Corporate Jets and Arkansas Aerospace were sold to Raytheon in 1993. In 1994,

6570-592: The same speed as small regional jet airliners but burn two-thirds of the fuel per passenger. Compared to piston engines, their greater power-to-weight ratio (which allows for shorter takeoffs) and reliability can offset their higher initial cost, maintenance and fuel consumption. As jet fuel can be easier to obtain than avgas in remote areas, turboprop-powered aircraft like the Cessna Caravan and Quest Kodiak are used as bush airplanes . Turboprop engines are generally used on small subsonic aircraft, but

6660-452: The supply of Panavia Tornado strike and air defence aircraft, BAe Hawk trainer jets, Rapier missile systems, infrastructure works and naval vessels. The Al Yamamah deals are valued at anything up to £20 billion and still continue to provide a large percentage of BAE Systems' profits. BAe acquired Royal Ordnance , the British armaments manufacturer, for £190 million on 22 April 1987. The German armaments specialist Heckler & Koch

6750-505: The troubles as a confluence of events: "our property company [Arlington Securities] was hit with a lousy market. Sales of the Rover Group sank by about a fifth and losses mounted. The government's defence spending volumes underwent a major review. Losses in our commercial aerospace division increased dramatically with the recession in the airline industry." In mid-1992, BAe wrote off £1 billion of assets, largely as part of redundancies and restructuring of its regional aircraft division. This

6840-406: The turbine system, the residual energy in the exhaust jet is low. Consequently, the exhaust jet produces about 10% of the total thrust. A higher proportion of the thrust comes from the propeller at low speeds and less at higher speeds. Turboprops have bypass ratios of 50–100, although the propulsion airflow is less clearly defined for propellers than for fans. The propeller is coupled to

6930-475: The turbine through a reduction gear that converts the high RPM /low torque output to low RPM/high torque. This can be of two primary designs, free-turbine and fixed. A free-turbine turboshaft found on the Pratt & Whitney Canada PT6 , where the gas generator is not connected to the propeller. This allows for propeller strike or similar damage to occur without damaging the gas generator and allowing for only

7020-459: The whole industry. In 2018, the new commercial aircraft value is projected for $ 270.4 billion while business aircraft will amount for $ 18 billion and civil helicopters for $ 4 billion. In September 2018, PwC ranked aerospace manufacturing attractiveness: the most attractive country was the United States , with $ 240 billion in sales in 2017, due to the sheer size of the industry (#1) and educated workforce (#1), low geopolitical risk (#4, #1

7110-500: Was bankrupt , Airbus, Boeing or Bombardier declined to take the 728JET /928JET large regional jet program as mainline and regional aircraft manufacturers were split and Airbus was digesting its ill-fated Fokker acquisition a decade earlier. On September 4, 2017, United Technologies acquired Rockwell Collins in cash and stock for $ 23 billion, $ 30 billion including Rockwell Collins' net debt, for $ 500+ million of synergies expected by year four. The Oct. 16, 2017 announcement of

7200-573: Was designed by the Hungarian mechanical engineer György Jendrassik . Jendrassik published a turboprop idea in 1928, and on 12 March 1929 he patented his invention. In 1938, he built a small-scale (100 Hp; 74.6 kW) experimental gas turbine. The larger Jendrassik Cs-1 , with a predicted output of 1,000 bhp, was produced and tested at the Ganz Works in Budapest between 1937 and 1941. It

7290-435: Was developed and produced via a multinational company, Panavia Aircraft GmbH , of which BAe was one of several companies to be heavily involved. On 10 July 1979, the maiden flight of a production Tornado occurred. On 5 and 6 June 1979, the first aircraft were delivered to the RAF and German Air Force respectively. On 25 September 1981, the first Italian Tornado was delivered. The Tornado would be produced in large numbers,

7380-620: Was fitted with the Blue Vixen radar, which was described as one of the most advanced pulse doppler radar systems in the world. In August 1981, BAe and the American aircraft manufacturer McDonnell Douglas signed a memorandum of understanding regarding the McDonnell Douglas AV-8B Harrier II . Under this agreement, BAe was effectively a subcontractor rather than a full partner, receiving 40 per cent of

7470-513: Was folded into this division after BAe acquired it four years later. In 1988, BAe purchased the Rover Group from the British government of Margaret Thatcher for £150 million. The sale was controversial due to opaque financial arrangements between the government and BAe; however the House of Commons Trade and Industry Committee was said to believe that "in spite of a catalogue of complaints,

7560-467: Was of axial-flow design with 15 compressor and 7 turbine stages, annular combustion chamber. First run in 1940, combustion problems limited its output to 400 bhp. Two Jendrassik Cs-1s were the engines for the world's first turboprop aircraft – the Varga RMI-1 X/H . This was a Hungarian fighter-bomber of WWII which had one model completed, but before its first flight it was destroyed in

7650-658: Was operated by the U.S. Navy for a short time. The first American turboprop engine was the General Electric XT31 , first used in the experimental Consolidated Vultee XP-81 . The XP-81 first flew in December 1945, the first aircraft to use a combination of turboprop and turbojet power. The technology of Allison's earlier T38 design evolved into the Allison T56 , used to power the Lockheed Electra airliner, its military maritime patrol derivative

7740-603: Was the first turboprop aircraft of any kind to go into production and sold in large numbers. It was also the first four-engined turboprop. Its first flight was on 16 July 1948. The world's first single engined turboprop aircraft was the Armstrong Siddeley Mamba -powered Boulton Paul Balliol , which first flew on 24 March 1948. The Soviet Union built on German World War II turboprop preliminary design work by Junkers Motorenwerke, while BMW, Heinkel-Hirth and Daimler-Benz also worked on projected designs. While

7830-465: Was the largest asset write-off in UK corporate history. General Electric Company (GEC), later to sell its defence interests to BAe, came close to acquiring BAe at this time. BAe cut 47% of its workforce (60,000 out of 127,000), 40,000 of which were from the regional aircraft division. Evans decided to sell non-core business activities, which included the Rover Group, Arlington Securities, BAe Corporate Jets, BAe Communications and Ballast Nedam . Although

7920-408: Was transferred to a limited company, which then re-registered as a public limited company (plc), under the name "British Aerospace Public Limited Company", on 2 January 1981. BAe was privatised in two main phases, the first in February 1981, involving 51.6% shares of the company, during which the public sale was 3.5 times subscribed and at the end of the first day's trading, share prices were 14% above

8010-647: Was working on a project for a 19-seat turboprop airliner, an upgraded version of the Handley Page Jetstream . BAe placed the Jetstream 31 into production after the first flight of the prototype in March 1980. At the same time, production of Hawker Siddeley's HS 125 business jet, Harrier VTOL jet fighter and HS 748 turboprop airliner continued under BAe, as did that of the Trident jet airliner for

8100-422: Was worth $ 838.5 billion in 2017: aircraft & engine OEMs represented 28% ($ 235 Bn), civil & military MRO & upgrades 27% ($ 226 Bn), aircraft systems & component manufacturing 26% ($ 218 Bn), satellites & space 7% ($ 59 Bn), missiles & UAVs 5% ($ 42 Bn) and other activity, including flight simulators , defense electronics, public research accounted for 7% ($ 59 Bn). The Top 10 countries with

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