How high can you fly?

On Oct 11, 4:32*am, "Stephen!" wrote:
Mark wrote in news:d7c5d9c3-f55a-40c4-8732-
:

So I mused up this simple aviation interpolation, which
you no doubt, will immediately know the answer.

Given a mean sea level designated as A,
if a distance of 1,173 ft is required for a

* Funny how copying and pasting will change the point at which the line
breaks are placed. *Next time, if you want to convince anyone that you
actually wrote it, fix the line breaks so they match the native line breaks
of your newsgroup client.

I'm impressed with the exact footage..
What happens at either 1,171 or 1,175 ?
Is the alphabet large enough to cope ? :-)

On 9/18/2010 10:24 AM, Mark wrote:
Ok, it's the year 2016. You are in a little Cessna 150.
You're plane isn't pressurized because it will implode,
so you're wearing a pressurized body suit. You have
an oxygen mask. You plane is powered by a very
powerful brushless electric motor supplied by a 20lb
carbon nanotube source that is basically limitless.
Your powerplant is equivalent to 700hp in an LSA.
The electric motor and cabin are heated.

How high can you fly? 95,000ft?

This will soon be a real consideration.

---
Mark

This note resulted in a very long thread, most of which called the
practicality of the postulates into question.

But here's another response, from an engineering viewpoint.
*IF* you could put a 750HP electric motor with limitless power supply
into a C-150 airframe, and hold onto the 1600 lb max gross, the
propeller, given high efficiency, would take the airframe straight up at
about 100 MPH until the prop ran out of air for traction, when the prop-
tips would be exceeding the local speed of sound handily.

Hope this helps!

Brian W

On Oct 10, 10:12*pm, brian whatcott wrote:
On 9/18/2010 10:24 AM, Mark wrote:

Ok, it's the year 2016. You are in a little Cessna 150.
You're plane isn't pressurized because it will implode,
so you're wearing a pressurized body suit. You have
an oxygen mask. You plane is powered by a very
powerful brushless electric motor supplied by a 20lb
carbon nanotube source that is basically limitless.
Your powerplant is equivalent to 700hp in an LSA.
The electric motor and cabin are heated.

How high can you fly? 95,000ft?

This will soon be a real consideration.

---
Mark

This note resulted in a very long thread, most of which called the
practicality of the postulates into question.

But here's another response, from an engineering viewpoint.
*IF* you could put a 750HP electric motor with limitless power supply
into a C-150 airframe, and hold onto the 1600 lb max gross, the
propeller, given high efficiency, would take the airframe straight up at
about 100 MPH until the prop ran out of air for traction, when the prop-
tips would be exceeding the local speed of sound handily.

Hope this helps!

Brian W

Perhaps the wrong engineering model, Brian. Swing wing would not work
as well as using the prop to provide thrust and airflow over the
wings, so the airframe slides up the hill, not hauled up hand over
hand! Helicopters don't get to go as high!

The thrust limitation you mention is a good one -- there simply are
not that many pounds of air to push around within the propeller's
reach. Now, if you attached a big balloon to the 152 and used it as
the basket in a hot air format I expect you could get very high.

On Sep 18, 10:24*am, Mark wrote:
Ok, it's the year 2016. You are in a little Cessna 150.
You're plane isn't pressurized because it will implode,
so you're wearing a pressurized body suit. You have
an oxygen mask. You plane is powered by a very
powerful brushless electric motor supplied by a 20lb
carbon nanotube source that is basically limitless.
Your powerplant is equivalent to 700hp in an LSA.
The electric motor and cabin are heated.

How high can you fly? 95,000ft?

This will soon be a real consideration.

---
Mark

At U-2 altitudes it's running (IIRC) close to mach 1 and just barely
above stall speed so I'd venture it's a function of the wing area and
speed + altitude.

On Oct 10, 11:32*am, "Stephen!" wrote:
Mark wrote in news:d7c5d9c3-f55a-40c4-8732-
:

So I mused up this simple aviation interpolation, which
you no doubt, will immediately know the answer.

Given a mean sea level designated as A,
if a distance of 1,173 ft is required for a

* Funny how copying and pasting will change the point at which the line
breaks are placed. *Next time, if you want to convince anyone that you
actually wrote it, fix the line breaks so they match the native line breaks
of your newsgroup client.

--
RCOS #7
IBA# 11465http://imagesdesavions.com

Oh, I wrote it all right. I originally posted it in
misc.writing to see if someone would quickly
shoot back the right answer, as there was a
fellow there claiming to be a genius. He failed.
Also, Ari the idiot troll jumped into the
conversation pretending to be me so as to
confuse the participants. I pasted my post
from there, here.

You cannot find that problem anywhere else
on the face of this earth except where I
wrote it, or copied myself for another group.

---
Mark

On Oct 10, 10:12*pm, brian whatcott wrote:
On 9/18/2010 10:24 AM, Mark wrote:

Ok, it's the year 2016. You are in a little Cessna 150.
You're plane isn't pressurized because it will implode,
so you're wearing a pressurized body suit. You have
an oxygen mask. You plane is powered by a very
powerful brushless electric motor supplied by a 20lb
carbon nanotube source that is basically limitless.
Your powerplant is equivalent to 700hp in an LSA.
The electric motor and cabin are heated.

How high can you fly? 95,000ft?

This will soon be a real consideration.

---
Mark

This note resulted in a very long thread, most of which called the
practicality of the postulates into question.

Exactly my mission statement. To examine the
practicality, especially in light of current developements
which (I already know) make this possible.

But here's another response, from an engineering viewpoint.
*IF* you could put a 750HP electric motor with limitless power supply
into a C-150 airframe, and hold onto the 1600 lb max gross, the
propeller, given high efficiency, would take the airframe straight up at
about 100 MPH until the prop ran out of air for traction, when the prop-
tips would be exceeding the local speed of sound handily.

Hope this helps!

Yes, thanks. I recommend Vr + 10%, while holding back
all that power. Climb expeditiously V4 + 20%. Your Vx
and Vy are no longer a consideration when you can climb
straight up. Don't. Attain straight and level just below the
tropopause to utilize the thermal boundry. You now have the
luxury of a Vbe and a Vbr that doesn't have to factor in
oxygen for combustion.

--Mark



Brian W

On Oct 12, 1:01*pm, Richard wrote:
On Sep 18, 10:24*am, Mark wrote:

Ok, it's the year 2016. You are in a little Cessna 150.
You're plane isn't pressurized because it will implode,
so you're wearing a pressurized body suit. You have
an oxygen mask. You plane is powered by a very
powerful brushless electric motor supplied by a 20lb
carbon nanotube source that is basically limitless.
Your powerplant is equivalent to 700hp in an LSA.
The electric motor and cabin are heated.

How high can you fly? 95,000ft?

This will soon be a real consideration.

---
Mark

At U-2 altitudes it's running (IIRC) close to mach 1 and just barely
above stall speed so I'd venture it's a function of the wing area and
speed + altitude.

"The coffin corner or Q-Corner is the altitude at or near which an
aircraft's stall speed is equal to the critical Mach number, at a
given gross weight and G loading. At this altitude the aircraft
becomes nearly impossible to keep in stable flight. Since the stall
speed is the minimum speed required to maintain level flight, any
reduction in speed will cause the airplane to stall and lose altitude.
Since the critical Mach number is the maximum speed at which air can
travel over the wings without losing lift due to flow separation and
shock waves, any increase in speed will cause the airplane to lose
lift, or to pitch heavily nose-down, and lose altitude. The "corner"
refers to the triangular shape at the top of a flight envelope chart
where the stall speed and critical Mach number lines come together."

http://en.wikipedia.org/wiki/Coffin_corner_(aviation)

---
Mark

On Oct 10, 3:32*pm, george wrote:
On Oct 11, 4:32*am, "Stephen!" wrote: Mark wrote in news:d7c5d9c3-f55a-40c4-8732-
:

So I mused up this simple aviation interpolation, which
you no doubt, will immediately know the answer.

Given a mean sea level designated as A,
if a distance of 1,173 ft is required for a

* Funny how copying and pasting will change the point at which the line
breaks are placed. *Next time, if you want to convince anyone that you
actually wrote it, fix the line breaks so they match the native line breaks
of your newsgroup client.

I'm impressed with the exact footage..
What happens at either 1,171 or 1,175 ?
Is the alphabet large enough to cope ? :-)

Simple. Just go back within this thread where
I actually explained my math, plug in the
different numbers and get your roll out length.

---
Mark

On Fri, 15 Oct 2010 05:17:47 -0700 (PDT), Mark wrote:

Exactly my mission statement. To examine the
practicality, especially in light of current developements
which (I already know) make this possible.

Mark Nver Returning to Usenet

Here's my complete mission statement.

http://gayincarolina.jottit.com/

There will be more coming since more Mark is better than Less Mark. So
I have been constantly told.

Mark The More

On Oct 15, 10:25*am, Mark wrote:
On Fri, 15 Oct 2010 05:17:47 -0700 (PDT), Mark wrote:
Exactly my mission statement. To examine the
practicality, especially in light of current developements
which (I already know) make this possible.
Mark Nver Returning to Usenet

Here's my complete mission statement.

http://gayincarolina.jottit.com/

There will be more coming since more Mark is better than Less Mark. So
I have been constantly told.

Mark The More

Since you are Ari the asshole troll, as accurately
explained by this intelligent fellow:

http://newsgroups.derkeiler.com/Arch.../msg00204.html

And since put viruses in your links, and are
unable to use your own on-line identity,

We'll pass.

---
Mark