Recent content by ginobee2000

thanks... i fink this should work. well HORST i tried to optimize the chord,c(r) along the blade using the expression below C_opt=16πR(R/r)/(9λ^2 B) ...where B=3, λ=7, r= 0.4, 1, 2, 3, 4,5,6,7,8,9,10 from the root of the blade when i calculated the values of the c(r) i got a very big...

i donno i fink it will be better if u..can analyze a simple naca 0012... and write a step by step procedure to follow.. pls..thanks

the polar i had was in txt file format...when i try to export it does not work...but when upload the mh airfoils it does come up showing the plot...

well. i have already analysed my airfoil.. which are from mh102 to mh110. i have the polars saved in txt file which i copied to MS Excel from which i was able to make the graphs for the lift coefficient now if i want to copy this polar to QBlade how do i do that or in which format is the file...

hello horstclaude i tried using ur program. i fink it a little bit complicated.. do u have a tutorials for this program.. thanks

thank you dtango..sorry for your browser.. may be u have to get the google browser... hello horstclaude. i just checked your blade design software and it was very nice...i will site u very well...it is good.. i will talk to my supervisor about it. cheers..zehr gut..ich bin gluklich für u...

hi am now calculating my blade geometry. can somebody help with chord calculation and the blade set angle along the blade with respect to the intervals thanks. the one i did is below and am not sure if it correct so didnt continue. my blade calculation is below: r/R r(stations) c Airfoil...

Hi dtango, thanks for ur help.. I appreciate it..well all the necessary calculation is done nw.. Hw do we go about the blade geometry. Since my blade is 2m I decided to make the number of stations along the blade up to 10 starting from 0.2.. How is the chord calculated... Nw am tryin to analyse...

the formula i used to calculate the blade tip speed was this TSR= (Ω*tip speed)/V where Ω is the rotational speed=w may be am misunderstanding myself.. i wish u can start from calculating the rotational speed

the rotational speed i calculated is not in radians per second... because i read some website and a journal which gave me the relation as (V*TSR*60)/(D*pie). i used this relation to find the RPM(revolution per minutes) which is 150.4. after getting this since i want to find the rotational...

hi dtango. i have been able to calculate my average wind speed from the data. i read a book by author name MR PATEL. it a good book. what i did is by plotting my distribution and calculating the power output based on the new derived probability i used from the weibull probability density...

Thanks so much dtango...am still doing more research to find out how best I can make the calculations of the speed. So far all the journals and papers I have read don't tell u homework to make such calculation. They only do elaborations on it and how do the weibull distribution only..

0.005284932 0.020552511 0.080859452 0.137643105 0.264540183 0.235003288 0.30541032 0.284681644 0.41592411 0.345869406 0.399834429 0.31427726 0.409934521 0.272937352 0.283624658 0.044520548 0.209518174 0.21862 0.132123288 0.119380731 0.050500457 0.061657534 0.03617242...

Probability Probability(%) 0.010273973 1.027 0.019977169 1.998 0.052397260 5.240 0.066894977 6.689 0.102853881 10.285 0.076141553 7.614 0.084817352 8.482 0.069178082 6.918 0.089840183 8.984 0.067237443 6.724 0.070662100 7.066 0.050913242 5.091 0.061301370 6.130 0.037899543 3.790...

90 175 459 586 901 667 743 606 787 589 619 446 537 332 322 50 223 219 125 107 43 50 28 12 17 8 6 4 3 1 1 this is the frequency column of the wind speed above