Quote:
Originally Posted by drgondog
Holtzauge - you have a somewhat poisonous debating style.
You have already called into question my academic credentials, you ague formulae without demonstrating context knowledge of when and why these formulae work (and don't work).. you keep challenging my questions with sarcasm - but don't answer the questions.
One more time - why doesn't the THp equation yield Total Thrust in the context of Velocity, and why doesn't it work at zero velocity.
Given that it doesn't work at zero velocity, what do YOU use to yield the Thrust/Total Thrust/Total Force (all interchangeable) at max power on the ground, chocks or brakes in place? There IS a Force at work but no acceleration as it is in equilibrium. Demonstrate your knowledge of Physics.
In other words, given your vast knowledge of Aero Engineering, based on the easy to understand explanations by Harri, could you calculate take off run, distance to clear`50 ft obstacle and what would your velocity be over the 50 ft obstacle if;
a.) you knew Bhp, or in case of jet - static thrust
b.) wing Aspect ratio,
c.) gross weight,
d.) CL and CDp,
e.) wing area.
Before you start what do you need to know about Cdp that we have not yet discussed?
After take off, what is the Total thrust vesus the Net Thrust over the 50 foot obstacle?
If you can answer these questions I will know you know the difference between Net Thrust and MaxThrust available - (for each case use the same power setting to simplify).
Out of curiosity hat is your academic and industry background to denigrate mine, or Crumpp's?
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I'm sorry if you feel offended by my replies. It has not been my intention to denigrate anyone but if you take a step back and look at your own post above you will see that it's not entirely lacking material of a personal nature with little bearing to the context of the discussion.
I have no interest in derailing this thread with discussions about 50' obstacle clearance, Cdp or some other issue which has nothing to do with the issue at hand. I entered this debate to discuss the impact of weight on top speed at S/L and I have now contributed my input on that subject. It's your privilage discount my view on the matter it if you want to and in that case we can agree that we disagree and leave it at that.