Stupid hp to thrust question

In article , RobertR237 says...

Ah Hell Chuck, you missed the point of the question here. The thrust produced
will remain the same in both instances regardless of the engine horsepower. If
indeed the 100hp engine is turning the prop at 2300 rpm and requires the full
100 hp to do so, the 150 hp engine is not producing full power to turn the
prop. A 1000 hp engine turning the same prop at the same rpm will still
produce the exact same thrust.

Ah hell Bob,I guess I don't see what point I missed :-) Seems we're both saying
the same thing. Given it's the same prop on both engines and the prop is turning
2300 rpm it will always produce the same thrust at that rpm regardless .However
if you start to open the throttle the 1000 hp engine it will turn faster and
produce more thrust because it has the power to do so...But the prop will be
spinning faster than 2300 . Maybe I'm not understanding the question.

See ya

Chuck (time for Beany) S

osite (RobertR237) wrote:

Where do you get insufficient data? Question does not indicate a different
prop turning on the two engines. "A" prop indicates the same prop used on two
different hp engines turning at the exact same RPM with no indicated
differences.

No, the query was ambiguous both semantically and in its technical
context. Evidence of the query's ambiguity is right in this thread,
where reasonable people took its meaning differently. Orval was
correct, "Insufficient data."

David O -- http://www.AirplaneZone.com

Where do you get insufficient data? Question does not indicate a different
prop turning on the two engines. "A" prop indicates the same prop used on two
different hp engines turning at the exact same RPM with no indicated
differences.

No, the query was ambiguous both semantically and in its technical
context. Evidence of the query's ambiguity is right in this thread,
where reasonable people took its meaning differently. Orval was
correct, "Insufficient data."

David O --
+++++++++++++++++++++++++++++++++++++++

Where the hell is the poster of the original question?
Has he left town after all this scientific
and not so scientific commotion?

If not...
Maybe, he will rephrase his question so 'we' can
settle this once and for all and move on to solving
the rest of the world's less pressing problems. g

Barnyard BOb - with a mouse in his pocket

In article , RR Urban
writes:


Where the hell is the poster of the original question?
Has he left town after all this scientific
and not so scientific commotion?

If not...
Maybe, he will rephrase his question so 'we' can
settle this once and for all and move on to solving
the rest of the world's less pressing problems. g

Barnyard BOb - with a mouse in his pocket



What and end all this fun. ;-)


Bob Reed
www.kisbuild.r-a-reed-assoc.com (KIS Builders Site)
KIS Cruiser in progress...Slow but steady progress....

"Ladies and Gentlemen, take my advice,
pull down your pants and Slide on the Ice!"
(M.A.S.H. Sidney Freedman)

In article , ChuckSlusarczyk
writes:


Ah hell Bob,I guess I don't see what point I missed :-) Seems we're both
saying
the same thing. Given it's the same prop on both engines and the prop is
turning
2300 rpm it will always produce the same thrust at that rpm regardless
.However
if you start to open the throttle the 1000 hp engine it will turn faster and
produce more thrust because it has the power to do so...But the prop will be
spinning faster than 2300 . Maybe I'm not understanding the question.

See ya

Chuck (time for Beany) S


Depends on rather you answer the question as written or read more into it.
Answering the question directly as written the answer is both would produce
exactly the same thrust. If the question however asked which was capable of
producing more thrust, the answer changes.

Bob Reed
www.kisbuild.r-a-reed-assoc.com (KIS Builders Site)
KIS Cruiser in progress...Slow but steady progress....

"Ladies and Gentlemen, take my advice,
pull down your pants and Slide on the Ice!"
(M.A.S.H. Sidney Freedman)

RR Urban wrote:

Where the hell is the poster of the original question?
Has he left town after all this scientific
and not so scientific commotion?

I expect that "Mark" ) is sitting back enjoying the show.
BTW, of those who attempted to answer his question, yours was the best
IMHO -- it was concise, to the point, and included reasonably
sufficient conditions (identical props, test stand).

David O -- http://www.AriplaneZone.com

To quote Bill Clinton, "It depends on what your definition of what thrust
is"?

Damn, I've never read so much BS for a simple question.

Where the hell is the poster of the original question?
Has he left town after all this scientific
and not so scientific commotion?

I expect that "Mark" ) is sitting back enjoying the show.
BTW, of those who attempted to answer his question, yours was the best
IMHO -- it was concise, to the point, and included reasonably
sufficient conditions (identical props, test stand).

David O -- http://www.AriplaneZone.com
++++++++++++++++++++++++++++++++++

WoW....
Coming from you, this is quite a compliment.
Thank you.

FWIW....
I considered "insufficient data" immediately,
but that seemed a bit too cut and dried at
the time for my mental picture of "Mark"...
considering the way he framed his question..

It is my fondest hope that the various
replies have enriched him much more
than he might have expected. g


Barnyard BOb -- Merry Christmas to all

In article , RobertR237 says...

Depends on rather you answer the question as written or read more into it.
Answering the question directly as written the answer is both would produce
exactly the same thrust. If the question however asked which was capable of
producing more thrust, the answer changes.

Ahh so he says as the bulb lights and the dawn arises ...Now I see :-)

Chuck (I'm sliding on the ice) S

In article , ChuckSlusarczyk
writes:

Depends on rather you answer the question as written or read more into it.
Answering the question directly as written the answer is both would produce
exactly the same thrust. If the question however asked which was capable of
producing more thrust, the answer changes.

Ahh so he says as the bulb lights and the dawn arises ...Now I see :-)

Chuck (I'm sliding on the ice) S



I have been burned way too many times taking tests where I read more into the
question that was written. I gave an answer based on just that, nothing more,
nothing less. It does however go against my nature and I always want to dig
into the additional factors as one poster mentioned, adjustable pitch, etc.

Bob Reed
www.kisbuild.r-a-reed-assoc.com (KIS Builders Site)
KIS Cruiser in progress...Slow but steady progress....

"Ladies and Gentlemen, take my advice,
pull down your pants and Slide on the Ice!"
(M.A.S.H. Sidney Freedman)