Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Classical Physics
Quantum Physics
Quantum Interpretations
Special and General Relativity
Atomic and Condensed Matter
Nuclear and Particle Physics
Beyond the Standard Model
Cosmology
Astronomy and Astrophysics
Other Physics Topics
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Classical Physics
Quantum Physics
Quantum Interpretations
Special and General Relativity
Atomic and Condensed Matter
Nuclear and Particle Physics
Beyond the Standard Model
Cosmology
Astronomy and Astrophysics
Other Physics Topics
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Physics
Other Physics Topics
Propeller thrust in restricted air flow environment
Reply to thread
Message
[QUOTE="Ion Aguirre, post: 5729198, member: 619633"] Hi Houlahound We have no perfect propeller mathematical model by now. Anyway ...some notes ... Propeller thrust at working RPM: [B]T= Kt dens N^2 D^4[/B] Required torque at working RPM [B]Q= Kq dens N^2 D^5[/B] Kt and Kq are experimental coefficients dens --> fluid density N ------> Propeller rotation rate given in Herz [B]N= RPM/60[/B] D -----> Propeller diameter Efficiency is given by the relation between input and output power (Power consumed by the propeller and power delivered) [B]eff= T V/(2 PI N Q)[/B] Although there is no perfect model,my advice is that having a look to the [B]"Blade Element Momentum Theory"[/B] could be a good starting point for "grabbing" the key concepts about how a propeller works. For an approach to air density at given conditions, the Ideal gas equation can be used: [B]dens= (P M)/(R T)[/B] Where: P --->> Pressure M --->> Molar mass (Air is a mixture not a single element --- Use any standard) T -->> Absolute Temperature R -->> Ideal gas constant (Value will depend on units)Dont hersitate asking again if needed. Regards [/QUOTE]
Insert quotes…
Post reply
Forums
Physics
Other Physics Topics
Propeller thrust in restricted air flow environment
Back
Top