- #1

- 1

- 0

## Main Question or Discussion Point

Does anyone know how to calculate how much downwards force a helicopter would exert on the roof of a house if it hovered over it at 700ft?

Thanks

Thanks

- Thread starter richwigmore
- Start date

- #1

- 1

- 0

Does anyone know how to calculate how much downwards force a helicopter would exert on the roof of a house if it hovered over it at 700ft?

Thanks

Thanks

- #2

FredGarvin

Science Advisor

- 5,066

- 7

There are way too many variables that need to be nailed down. Helicopter type. Gross weight. Altitude. Temperature.

- #3

- 3

- 0

assume that we have all the parameters, which theory will be used for the calculation?

- #4

FredGarvin

Science Advisor

- 5,066

- 7

http://www.public.iastate.edu/~aero442/unit2.pdf

- #5

- 738

- 0

basically its the same problem as the old trick. would your truck go light if all the birds inside it took flight at the same time.

and 700 ft a lot of distance

- #6

- 3

- 0

- #7

FredGarvin

Science Advisor

- 5,066

- 7

That is very true. Usually something along these lines would be calculated via fluid dynamics package or simply measured in the field. There are so many things that could have an effect on the outcome.

- Last Post

- Replies
- 19

- Views
- 13K

- Last Post

- Replies
- 0

- Views
- 6K

- Replies
- 3

- Views
- 645

- Last Post

- Replies
- 1

- Views
- 3K

- Last Post

- Replies
- 5

- Views
- 3K

- Last Post

- Replies
- 4

- Views
- 1K

- Last Post

- Replies
- 5

- Views
- 4K

- Replies
- 20

- Views
- 15K

- Last Post

- Replies
- 2

- Views
- 2K

- Last Post

- Replies
- 2

- Views
- 2K