Yes, after age 60, my recall gets muddy.


"Bob Moore" wrote in message
. 122...
| Jim Macklin wrote
| 5 and 7 thousand
|
| Running on (faulty) memory again, Jim?
|
| How about 7,500' and about 12,500', ISA of course.
|
| See my previous replies to this thread for a real chart
| answer.
|
| The formula answer is:
|
| bhp at altitude equals bhp at sea level times the quantity
| (density ratio minus the quantity(1 minus density ratio
divided by 7.55))
|
| Works out to 76% at 7,500' and 64% at 12,500', or
thereabouts.
|
|
| Bad information is worse than no information at all.
|
| Bob Moore