# Cars, cars and electric cars

Discussion in 'Just Talk' started by joinerjohn1, Jul 26, 2017.

1. ### chippie244Super Member

It's similar to doing an auto rotational landing in a helicoptor, start descent with the collective down and the rotors spin but with no lift but just before crashing you lift the collective and the rotors give lift but slow down.

2. ### Mr. HandyandyScrewfix Select

Well how much air flows through a solid vertical front facing part of a car then?

3. ### Mr. HandyandyScrewfix Select

It's not similar to that in any way.

4. ### chippie244Super Member

Name a solid vertical front facing part of a car.

5. ### chippie244Super Member

It's just like that. The turbine ie the rotors are either spinning freely but producing no lift/power or they are producing lift/power and slowing down.
This is with gravity pulling it down.

6. ### Mr. HandyandyScrewfix Select

Just left of the right headlight on our car and right of the left headlight, just below the bumper in the cowl, just above the numberplate and to the right and left of the numberplate. Solid body, straight down.

7. ### Mr. HandyandyScrewfix Select

If it were possible, and you blew enough air at them, they would turn. If this was air from a free source(forward motion) it would be a free lift.

And further to that, if you dropped a helicopter no engine running from a great height, you might expect the blades to turn as it drops. Take the same area of that copter as a sheet of metal same weight. Which has more resistance and therefore drops slower?

8. ### chippie244Super Member

What are you driving, a Lada?

9. ### chippie244Super Member

This is a free source, gravity, and the rotors do spin until you want lift/power out of them and then they slow down/stop.

10. ### Mr. HandyandyScrewfix Select

Gravity is not air and does not blow.

11. ### chippie244Super Member

How exactly are you blowing air through your turbine?

12. ### Mr. HandyandyScrewfix Select

Forward motion of car. Creates air flow in opposite direction. Some air passes through. That is a gain.

13. ### chippie244Super Member

So a helicopter falling under gravity isn't causing an air flow through the rotor?

14. ### Deleted member 33931Guest

If having a wind turbine fitted anywhere on a car provided a net gain in energy - ie: more electrical energy comes out from the turbine than is consumed in additional fuel in pushing your turbine'd car through the air - then it follows that if you fitted a large enough one on your car, it would go on forever and not use any fuel.

Can you visualise this possibly being the case, Mr Ha? Stick a large powerful turbine on your car, give the car a wee push - and off it goes.

15. ### P J ThompsonActive Member

I'll refer you to my previous post about the aerodynamic design of the modern car.
You're not wrong about the effect of your average vertical, flat, solid surface. We've probably all carried 8x4 sheets across yards in the wind! It presents a huge block to forward motion through air. But that isn't a modern car, a modern car is designed with this in mind.
Btiw nailed this one before and I've already provided a workable application of the idea of using some form of wind turbine in a vehicle

16. ### Mr. HandyandyScrewfix Select

No, fool. You can only utilise the wasted(and resistant) space(front facing flat bodywork). If you add, it fails.

You know this.

17. ### Mr. HandyandyScrewfix Select

I didn't say it didn't. But the air isn't free if the motor is turning the blades(like you said).

18. ### chippie244Super Member

Well yes you did and there is no motor turning the rotor only air flow caused by gravity.

19. ### longboatScrewfix Select

Eureka!
Time to get some plans drawn up and file for a patent..

20. ### chippie244Super Member

Handy's argument is full of more holes than his car