Twin-engined aircraft
The standard engine, like most American powerplants, has what is termed Right-Hand Rotation (clockwise, upper propeller blade moving to the right, as seen from behind). Of course, when the airframe designer decides to equip contra-rotating engines, usually to address the problems of "critical" engine failure, it is the right-installed engine which undergoes the change. Hence, the left-side engine of a Chieftain has right-hand rotation, and the right-side engine has left rotation, and a left-hand prop.
Of course, when the airframe designer decides to equip contra-rotating engines, usually to address the problems of "critical" engine failure, it is the right-installed engine which undergoes the change. Hence, the left-side engine of a Chieftain has right-hand rotation, and the right-side engine has left rotation, and a left-hand prop.
Using criteria previously mentioned, the Westland Whirlwind must count.
The Rolls-Royce Peregrines were designed from the outset to be handed. Not just with an idler gear, the whole engine rotated in the opposite direction.
Having it tried with the Peregrine, Rolls-Royce concluded it was a b***** stupid idea and never did it again.
The Rolls-Royce Peregrines were designed from the outset to be handed. Not just with an idler gear, the whole engine rotated in the opposite direction.
Having it tried with the Peregrine, Rolls-Royce concluded it was a b***** stupid idea and never did it again.
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With the A400 isn't it something like the inboard props rotate top blade outwards and the outboard props rotate top blade inwards? Noisy bugger whatever...
Good thread indeed and educational!
Good thread indeed and educational!
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If you can include the B36, then you can also include The Avro Lancastrian
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What definiition of "critical engine" would allow that to be true?
FAA definition - "Critical engine means the engine whose failure would most adversely affect the performance or handling qualities of an aircraft."
The definintion requires loss of one engine to have a more adverse effect than loss of the other.
FAA definition - "Critical engine means the engine whose failure would most adversely affect the performance or handling qualities of an aircraft."
The definintion requires loss of one engine to have a more adverse effect than loss of the other.
Last edited by EXDAC; 27th Nov 2023 at 18:09.
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The C-123K and KC-97L also carried a pair of turbojets to boost take off performance.
There's a piccie of an Indian Air Force C-119G sporting a dorsal Orpheus on the cover of Air Pictorial, August '63.
Trident 3
3 proper engines and an oversize and unbelievably noisy APU boost engine or must t be a mix of jet and prop.
Also from the real past the Fairey Rotadyne, another fuel to noise unit
Two RR Tynes on the wings-such as theywere- and ducted air sinning the monster rotor
3 proper engines and an oversize and unbelievably noisy APU boost engine or must t be a mix of jet and prop.
Also from the real past the Fairey Rotadyne, another fuel to noise unit
Two RR Tynes on the wings-such as theywere- and ducted air sinning the monster rotor
B707/720, DC-8, CV880/990, VC-10, DH Comet, didn't have APUs.
4 holers with APUs - B747, A340, any others?
OK, the RAF VC-10s did and I saw a VIP 707 with one.
There was a 5 engined Vulcan.
I flew the A340-200 and -300. These aircraft were considered to have four hair driers and one APU.
Last edited by Captain Dart; 28th Nov 2023 at 03:04.
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