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Bret Cahill
Guest
Sun Sep 04, 2011 1:05 am
Quote:
Some railroad reg. requires a passenger train to decelerate with a
jerk< 2 m/sec^3. Don't how or even if they do it on trains but it's
a good idea to keep the jerk down when passengers are out of their
seats and walking to an exit.
It could be done automatically on public buses to reduce tumbling down
the aisle incidents. It would also reduce the multi tasking load on
bus drivers trying to pull out into heavy traffic before passengers
are seated..
The brake pedal would have an override, i.e., stomping all the way
down, in case a pedestrian stepped out in front of the bus.
The number of elderly will soar along with fuel prices so this will
save a lot of lives.
Bret Cahill
As a Senior Citizen who in-spite of a Berg Balance Score in low-mid
20's actually can walk with 2 canes
*NO* !!!!!!!!!!!!!!!!!!!!!!!
I do not believe you have:
1. observed the problem set in the field
2. correctly identified the actual condition of maximum hazard
3. considered "Law of Unintended Consequences"- Hide quoted text -
Try googling low jerk and "throttle controller."
Bret Cahill
Jerry Avins
Guest
Sun Sep 04, 2011 1:49 am
On 9/3/2011 12:38 AM, 1treePetrifiedForestLane wrote:
Quote:
that may be what I'm referring to. the biggest "hole"
was uncovered in the IGY, '57-59, by Dobson and Nicole,
they who first deployed ye olde ozonometers
(units of column of ozone in Dobsons .-)
Poles are points on a polar azimuthal equidistant projection, not
singularities.
Jerry
--
Engineering is the art of making what you want from things you can get.
Jerry Avins
Guest
Sun Sep 04, 2011 1:54 am
On 9/2/2011 10:59 PM, Bret Cahill wrote:
...
You're building in a bias.
Quote:
Buses get 200 passenger miles / gallon.
Fully loaded buses get 200 passenger miles/gallon.
Quote:
Right now that "gallon" represents over 8 lbs of carbon, 29 lbs CO2.
A bus is 4X better than a new Prius with one occupant.
A bus is not as good as a fully loaded Prius.
Jerry
--
When ideas fail, words come in very handy. -- Johann Wolfgang von Goethe
Michael A. Terrell
Guest
Sun Sep 04, 2011 3:55 am
Jerry Avins wrote:
Quote:
On 9/2/2011 10:59 PM, Bret Cahill wrote:
...
You're building in a bias.
Buses get 200 passenger miles / gallon.
Fully loaded buses get 200 passenger miles/gallon.
Right now that "gallon" represents over 8 lbs of carbon, 29 lbs CO2.
A bus is 4X better than a new Prius with one occupant.
A bus is not as good as a fully loaded Prius.
But a lot better than a fully loaded troll, like Cahill.
--
You can't have a sense of humor, if you have no sense.
Bret Cahill
Guest
Sun Sep 04, 2011 5:39 am
Quote:
You're building in a bias.
Buses get 200 passenger miles / gallon.
Fully loaded buses get 200 passenger miles/gallon.
Right now that "gallon" represents over 8 lbs of carbon, 29 lbs CO2.
A bus is 4X better than a new Prius with one occupant.
A bus is not as good as a fully loaded Prius.
When was the last time you saw 4 passengers in a Prius?
Anyway by 2015 Freightliner will have a rig that get's 174 ton miles/
gallon. Figure the average bus passenger in the U. S. weighs 0.2 tons
so the newer buses will be able to get 870 passenger mpg.
Bret Cahill
Jerry Avins
Guest
Sun Sep 04, 2011 2:43 pm
On 9/3/2011 11:39 PM, Bret Cahill wrote:
Quote:
When was the last time you saw 4 passengers in a Prius?
My son, his wife, their daughter, and me.
Jerry
--
Engineering is the art of making what you want from things you can get.
Phil Martel
Guest
Sun Sep 04, 2011 2:49 pm
"Bret Cahill" wrote in message
news:ae4bbb50-b770-4a82-8a97-f62d4b5d6b7d_at_b34g2000prf.googlegroups.com...
Quote:
You're building in a bias.
Buses get 200 passenger miles / gallon.
Fully loaded buses get 200 passenger miles/gallon.
Right now that "gallon" represents over 8 lbs of carbon, 29 lbs CO2.
A bus is 4X better than a new Prius with one occupant.
A bus is not as good as a fully loaded Prius.
When was the last time you saw 4 passengers in a Prius?
Anyway by 2015 Freightliner will have a rig that get's 174 ton miles/
gallon. Figure the average bus passenger in the U. S. weighs 0.2 tons
so the newer buses will be able to get 870 passenger mpg.
I know there are a lot of overweight people in the US, but an average of 400
pounds??
Bret Cahill
Bret Cahill
Guest
Sun Sep 04, 2011 4:47 pm
Quote:
When was the last time you saw 4 passengers in a Prius?
My son, his wife, their daughter, and me.
Now if we can only get that going with every day commuting then a
Prius could compete with a bus.
Bret Cahill
Bret Cahill
Guest
Sun Sep 04, 2011 10:44 pm
Quote:
Anyway by 2015 Freightliner will have a rig that get's 174 ton miles/
gallon. Figure the average bus passenger in the U. S. weighs 0.2 tons
so the newer buses will be able to get 870 passenger mpg.
I know there are a lot of overweight people in the US, but an average of 400
pounds??
Each one takes up two seats so the 870 passenger mpg figure may be a
little high.
Bret Cahill
Randy Yates
Guest
Sun Sep 04, 2011 11:08 pm
On 08/31/2011 06:36 PM, Bret Cahill wrote:
Quote:
Some railroad reg. requires a passenger train to decelerate with a
jerk< 2 m/sec^3.
Perhaps with a PIDD^2 controller? (proportional, integral, derivative,
derivative squared, assuming velocity being controlleed)?
--RY
Don't how or even if they do it on trains but it's
Quote:
a good idea to keep the jerk down when passengers are out of their
seats and walking to an exit.
It could be done automatically on public buses to reduce tumbling down
the aisle incidents. It would also reduce the multi tasking load on
bus drivers trying to pull out into heavy traffic before passengers
are seated..
The brake pedal would have an override, i.e., stomping all the way
down, in case a pedestrian stepped out in front of the bus.
The number of elderly will soar along with fuel prices so this will
save a lot of lives.
Bret Cahill
--
Randy Yates % "Watching all the days go by...
Digital Signal Labs % Who are you and who am I?"
mailto://yates_at_ieee.org % 'Mission (A World Record)',
http://www.digitalsignallabs.com % *A New World Record*, ELO
1treePetrifiedForestLane
Guest
Mon Sep 05, 2011 12:29 am
yes, but that is a result of the common coordination,
spherical + altitude, mathematically. thus,
for instance, when I asked the speaker,
who wrote a book about hurricanes,
What is the Mother of all hurricanes, or
maybe the father of them, because
it is anticyclonic?
Quote:
Poles are points on a polar azimuthal equidistant projection, not
singularities.
Bret Cahill
Guest
Mon Sep 05, 2011 2:31 am
A const. torque electric motor might give the same drivig experience.
The initial jerk might be a spike but after that it would be zero.
Quote:
Some railroad reg. requires a passenger train to decelerate with a
jerk< 2 m/sec^3.
Perhaps with a PIDD^2 controller? (proportional, integral, derivative,
derivative squared, assuming velocity being controlleed)?
--RY
Don't how or even if they do it on trains but it's
a good idea to keep the jerk down when passengers are out of their
seats and walking to an exit.
It could be done automatically on public buses to reduce tumbling down
the aisle incidents. It would also reduce the multi tasking load on
bus drivers trying to pull out into heavy traffic before passengers
are seated..
The brake pedal would have an override, i.e., stomping all the way
down, in case a pedestrian stepped out in front of the bus.
The number of elderly will soar along with fuel prices so this will
save a lot of lives.
Bret Cahill
--
Randy Yates % "Watching all the days go by...
Digital Signal Labs % Who are you and who am I?"
mailto://ya...@ieee.org % 'Mission (A World Record)',http://www.digitalsignallabs.com% *A New World Record*, ELO- Hide quoted text -
- Show quoted text -
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