How many four-engine commercial passenger jetliner types are …
2017年5月18日 · However, that is not all the 4 engine passenger aircraft. The BAe 146 is a 4 engine regional airliner, and you could add to your distinguishing features "has a T-tail, must …
aircraft design - Why does the 747 have 4 engines instead of 2 ...
2015年7月2日 · The planes used on these routes during that era consisted of 4-engine aircraft like the De Havilland Comet, Boeing 707, Douglas DC-8, and Boeing 747 as well as 3-engine …
Why are twin engine airliners more fuel efficient than three or four ...
2015年8月13日 · Almost all the aircraft under development are twinjets, with the A380 being the last 4 engine aircraft to enter (commercial) service. These aircraft incorporate a number of …
What is the smallest manned aircraft with four engines?
2017年9月22日 · What is the smallest (by operating empty mass) quad-engine aircraft that satisfies these conditions? Current or past airplane; aircraft with fixed wings, not a rotorcraft, …
What is ETOPS and how does it work? - Aviation Stack Exchange
2015年6月12日 · Early combustion engines were noticeably unreliable. It was not uncommon for a 4-engine piston aircraft to arrive at its destination with only 3 engines running. Twin engine …
Are four-engined airplanes subject to ETOPS equivalent rules?
2014年9月5日 · Yes, three- and four-engine airliners follow 'Long-Range Operations' restrictions just like twin-engine airliners. From WikiPedia : Airbus proposed to replace ETOPS by a newer …
Why are there (almost) no civilian single engine jet aircraft?
2023年10月24日 · Most have 2 jet engines mounted either side of the fuselage, there are trijet models (e.g. B-727, MD-11) there are also 4-engine aircraft (A380, B-747) and there were …
Why does ETOPS not apply to older 4 engine aircraft?
2015年6月14日 · (i) K25.1.4(a), fuel system pressure and flow requirements; (ii) K25.1.4(a)(3), low fuel alerting; and (iii) K25.1.4(c), engine oil tank design. (2) For ETOPS type design approval …
airliner - Why does the A340 have 4 engines instead of 2?
2015年9月1日 · Airbus decided to split the development into distinct aircraft having the same wing and airframe - A330 with two engines and A340 with four engines. However, as time has …
aircraft identification - What is this 4-propeller plane? - Aviation ...
2019年4月9日 · It is also entirely possible (and I have no knowledge either way) that Russia has overflight rights for military aircraft between Russia proper and the Kaliningrad exclave. Apart …