The bypass ratio (BPR) of a turbofan engine is the ratio between the mass flow rate of the bypass stream to the mass flow rate entering the core. A 10:1 bypass ratio, for example, means that 10 kg of air passes through the bypass duct for every 1 kg of air passing through the core. Turbofan engines are usually described in terms of BPR, which together with engine pressure ratio, turbine inlet temperature and fan pressure ratio are important design parameters. In addition, BPR is quoted for turboprop and unducted fan installations because their high propulsive efficiency gives them the overall efficiency characteristics of very high bypass turbofans. This allows them to be shown together with turbofans on plots which show trends of reducing specific fuel consumption (SFC) with increasing BPR. BPR is also quoted for lift fan installations where the fan airflow is remote from the engine and doesn't physically touch the engine core. Bypass provides a lower fuel consumption for the same thrust, measured as thrust specific fuel consumption (grams/second fuel per unit of thrust in kN using SI units). Lower fuel consumption that comes with high bypass ratios applies to turboprops, using a propeller rather than a ducted fan. High bypass designs are the dominant type for commercial passenger aircraft and both civilian and military jet transports. Business jets use medium BPR engines. Combat aircraft use engines with low bypass ratios to compromise between fuel economy and the requirements of combat: high power-to-weight ratios, supersonic performance, and the ability to use afterburners. (Wikipedia).
Volume between 3+y-x^2 and unit disk
From playlist Double integrals
Differential Equation - 1st Order: Integrating Factor (3 of 14) How to Find an Integrating Factor
Visit http://ilectureonline.com for more math and science lectures! In this video I will find the integrating factor to (xy^2+4x^2y)dx+(3x^2y+4x^3)dy=0 (which was shown to be exact in the previous video). Next video in the Exact Differential series can be seen at: http://youtu.be/YLv_phC
From playlist DIFFERENTIAL EQUATIONS 5 - 1ST ORDER : INTEGRATING FACTOR
Multivariable Calculus Limit of (x - y - 1)/(sqrt(x - y) - 1) by Rationalizing
Please Subscribe here, thank you!!! https://goo.gl/JQ8Nys Multivariable Calculus Limit of (x - y - 1)/(sqrt(x - y) - 1) by Rationalizing
From playlist Calculus
Determine Limits of a Vector-Valued Function (Basic)
This video explains how to determine the limit of a vector function.
From playlist Vector Valued Functions
Volume under z = x + sin(y) + 1
From playlist Double integrals
05 Balancing Equations with x in numerator and denominator
In this video we balance an equation with x in both the numerator and denominator
From playlist skill 8 attempt 2
Multivariable Maximum and Minimum Problems
In this video, we will work through several examples of problems where we find critical points of multivariable functions and test them to find local maximum and local minimum points.
From playlist Multivariable Calculus
Mod-01 Lec-05 Turbofan, Turbo-prop and Turboshaft engines
Jet Aircraft Propulsion by Prof. Bhaskar Roy and Prof. A. M. Pradeep, Department of Aerospace Engineering, IIT Bombay. For more details on NPTEL visit http://nptel.iitm.ac.in
From playlist IIT Bombay: Aerospace - Jet Aircraft Propulsion (CosmoLearning Aerospace Engineering)
The Insane Engineering of the GEnX
Sign up to Nebula here: https://go.nebula.tv/realengineering Watch the 60 minute Nebula version here: https://nebula.app/videos/real-engineering-the-insane-engineering-of-the-787 Links to everything I do: https://beacons.ai/brianmcmanus Credits: Writer/Narrator: Brian McManus Writer/Re
From playlist The Insane Engineering of..
Mod-01 Lec-03 Development of Jet propulsion for aircraft
Introduction to Aerospace Propulsion by Prof. Bhaskar Roy and Prof. A. M. Pradeep, Department of Aerospace Engineering, IIT Bombay For more details on NPTEL visit http://nptel.iitm.ac.in
From playlist IIT Bombay: Aerospace - Jet Aircraft Propulsion (CosmoLearning Aerospace Engineering)
Mod-15 Lec-35 Installed Performance of Engine
Jet Aircraft Propulsion by Prof. Bhaskar Roy and Prof. A. M. Pradeep, Department of Aerospace Engineering, IIT Bombay. For more details on NPTEL visit http://nptel.iitm.ac.in
From playlist IIT Bombay: Aerospace - Jet Aircraft Propulsion (CosmoLearning Aerospace Engineering)
Mod-01 Lec-01 Introduction & Development of Jet Aircraft Propulsion
Jet Aircraft Propulsion by Prof. Bhaskar Roy and Prof. A. M. Pradeep, Department of Aerospace Engineering, IIT Bombay. For more details on NPTEL visit http://nptel.iitm.ac.in
From playlist IIT Bombay: Aerospace - Jet Aircraft Propulsion (CosmoLearning Aerospace Engineering)
Region between x^2+y^2 and 2x+y+1
From playlist Triple integrals
Multistage Transistor Audio Amplifier Circuit
This electronics video tutorial discusses the basic elements of a multistage transistor audio amplifier circuit. It explains the importance of the bypass capacitors as it relates to voltage gain and distortion as well as the importance of the potentiometers for volume control and managing
From playlist Electronic Circuits
How To Calculate The Voltage Gain of a Transistor Amplifier
This electronics video tutorial explains how to calculate the voltage gain of a transistor amplifier. It explains how to calculate the base current of an emitter feedback bias circuit and a voltage divider bias circuit which is useful in calculating the AC emitter resistance of the circui
From playlist Electronic Circuits
Will Boom Bring Supersonic Back?
Be one of the first 500 people to sign up with this link and get 20% off your subscription with Brilliant.org: https://brilliant.org/RealEngineering/ New streaming platform: https://watchnebula.com/ Vlog channel: https://www.youtube.com/channel/UCMet4qY3027v8KjpaDtDx-g Patreon: https://
From playlist Aviation
The Insane Engineering of the SR-71 Blackbird
Sign up to Nebula here: https://go.nebula.tv/realengineering Watch this video on Nebula: https://nebula.tv/videos/real-engineering-the-insane-engineering-of-the-sr71-blackbird Links to everything I do: https://beacons.ai/brianmcmanus Credits: Writer/Narrator: Brian McManus Editor: Ste
From playlist Military
Calculus: Integration - Partial Fractions (3 of 16) Case 1: Product of Linear Factors
EducationalVisit http://ilectureonline.com for more math and science lectures! In this video I will explain partial fraction Case 1: Product of Linear Factors.
From playlist CALCULUS