Rolls-Royce Conway
The Rolls-Royce RB.80 Conway was the first by-pass engine (or turbofan) in the world to enter service. Development started at Rolls-Royce in the 1940s, but it was used only briefly in the late 1950s and early 1960s before other turbofan designs were introduced that replaced it. The Conway powered versions of the Handley Page Victor, Vickers VC10, Boeing 707-420 and Douglas DC-8-40. The name "Conway" is an Anglo-Saxon permutation of River Conwy, in Wales, in keeping with Rolls' use of river names for gas turbine engines.
Development
Background
In early jet engines the exhaust was much faster and hotter than it had to be (contrary to the ideal Froude efficiency) for efficient thrust; capturing some of that energy would improve the fuel economy of the engine. The turboprop is an obvious example, which uses a series of additional turbine stages to capture this energy to power a propeller. However there is a tradeoff in propeller efficiency compared to forward speed, so while the turboprops are efficient engines, they are only efficient at speeds of up to 500 mph (800 km/h; 430 kn). This meant there was a sweet spot between the high efficiencies of the turboprop at low speeds and the jet at high speeds that was not being directly addressed. This spot, between about 450 mph (720 km/h; 390 kn) and 700 mph (1,100 km/h; 610 kn), was precisely where the vast majority of commercial jet aircraft spent most of their time.
Podcasts:
Rolls Royce
Featuring Kevin Durant
My dreams coming true for wishing
My money coming in like they pay me that tuition
Swag what they talkin’ man, I’m the definition
And I’m in a different class like I’m sitting in detention
Sitting in the ghost, I’m riding down the interstate
Stay strapped up cuz you know these niggas finna hate
I take my place at the top of the throne
I don’t care if they really think they on
I’m from the east side as P is wise reside
Wanna see what K divide
Hold up, just let me decide
Choosing from a variety, niggas catching anxiety
23, a lot of fucking cheese, so inspiring
Sleeping and working, I’m working and thinking
I’m blowin’ on some purp when I’m drinking
I’m getting grow too
Linkin’ for certain but work for them Franklin’s
Fuck them clothes, messin’ by
Tell Derek I need a Rolls too
All blue, you know where I be at, biat
I ain’t got a record deal so I ain’t gotta relapse
I can say whatever I want. You don’t agree that?
Then you don’t gotta play mine cuz I’mma spill same mine
Cuz where I’m from niggas be drawing with no crayon
Catch you in the hood, R I P Trevon
I’m just telling you what I know, not what I’ve heard
Phillie, Phillie where them shooters comin’ off the grape vine
They wanna see us knocked up, locked up, AKON
All that Gucci–Louie talk, save that shit for Kraesha
The way I’m movin’ up you’da thought I was a mason
KD, they back on my pipe, just tell ‘em stay on
Niggas pray on for you not to stay on
I discount, double check them niggas like I’m state farm
I’m killin’ Rolls, I’m stuntin’ up in the SLS
Watch me get busy, I’m killin’ to whip my baguette
New baguettes got your ex-girl getting super wet
And I spit retarded boss so I’mma need a stupid check
Move in the other room right now, getting super wet
Chill Priv, niggas don’t know what the fuck to do with that
I’m with my Phillie niggas and we don’t feel these niggas
Even with a megaphone we still couldn’t hear these niggas
I’m with my DC niggas, we don’t fuck with scary niggas
Rappin’ as, actin’ as old Tyler Perry niggas
Goddamn, you can hit that shit?
That nigga Privaledge, goddamn
And Kevin Durant, ain’t that nigga a basketball playa?
And they going in like that?
Shit man, them niggas is crissed
Them niggas go hard