On 7/10/2010 8:57 PM, vaughn wrote:
wrote in message
...
They did not tell us what the minimal sink rate of this beast was, but
it had to be pretty low. If it's as much as 300 feet a minute (I think
the weight was 3,500 pounds) that means one would need to deliver
about 30 horsepower to the air). That is not going to happen with only
40 shaft horsepower available.

I don't know where you came up with 30 horsepower for level flight, but if it
has reasonable takeoff performance on 40 horsepower, it can probably sustain
level flight with considerably less.

Vaughn


Turning that earlier estimate on its head: if it can take off and climb
at 300 fpm, then it would need about 10 HP for level flight.

Brian W