How Beat The High Cost Of Fuel: The ElectraFlyer-C

How Beat The High Cost Of Fuel

Randall Fishman, president of Electric Aircraft Corp., flew his
ultralight trike at EAA Airventure 2007, Oshkosh. "I flew the trike
in front of the crowds, and the trike was mobbed with people every
day. The EAA folks really loved the idea." The ElectraFlyer won the
Grand Champion Ultralight and Innovation awards.

This year Fishman hopes to fly his new ElectraFlyer-C (a re-engined
Moni motorglider with an 18-horsepower electric motor) at EAA
Airventure 2008. The ElectraFlyer-C cruises at 70 mph, stalls at 45
mph, and has a top speed of 90 mph and a flight duration of ~1-1/2
hours. The electric motor directly drives a 45-inch ground
adjustable, two-blade PowerFin carbon fiber propeller, which lifts the
aircraft at a climb rate of 500 to 600 fpm. The experimental
amateur-built airplane is currently in its required 40-hour flight
testing phase.
http://registry.faa.gov/aircraftinqu...cmndfin d.y=5

The motor is powered by a 78 pound, custom-built lithium-ion polymer
battery with a power output of "5.6 kilowatt hours"; projected life is
300 to 500 full discharge cycles or more than 1,000 partial cycles.
The battery can be recharged in as little as two hours using a
220-volt charger (or six hours with a 110-volt charger). The cost for
a full recharge is 70 cents with the 110-volt charger. Fishman says
it's feasible to carry a small 110-volt charger as baggage on
cross-country flights.

More information:

http://www.flickr.com/photos/2722498...56704/sizes/o/

http://www.electraflyer.com/electraflyerc.html

http://www.flickr.com/photos/2722498...7605355156982/

Video: http://www.electraflyer.com/news.html


http://www.aero-news.net/news/sport....e-f146a285a148

On Jun 16, 7:37 pm, Larry Dighera wrote:
How Beat The High Cost Of Fuel

The motor is powered by a 78 pound, custom-built lithium-ion polymer
battery with a power output of "5.6 kilowatt hours"; projected life is
300 to 500 full discharge cycles or more than 1,000 partial cycles.
The battery can be recharged in as little as two hours using a
220-volt charger (or six hours with a 110-volt charger). The cost for
a full recharge is 70 cents with the 110-volt charger. Fishman says
it's feasible to carry a small 110-volt charger as baggage on
cross-country flights.

1 horsepower = .75kw. So 5.6 kilowatt hours is only 7.51 horsepower
hours. Good enough for a short burst to get you to altitude and soar
the thermals, bu you aren't going anywhere cross country.

Compare it to a really inefficient 2 stroke, burning .6 lb/hp-hr.
Your battery is equal to .75 gallons of gas.

Very splendid, I like very muchhentai sexshower sexbritish office sexpublic sex videosfree anime sex videos

On Sat, 21 Jun 2008 20:42:12 -0700 (PDT), Richard Riley
wrote in
:

On Jun 16, 7:37 pm, Larry Dighera wrote:
How Beat The High Cost Of Fuel

The motor is powered by a 78 pound, custom-built lithium-ion polymer
battery with a power output of "5.6 kilowatt hours"; projected life is
300 to 500 full discharge cycles or more than 1,000 partial cycles.
The battery can be recharged in as little as two hours using a
220-volt charger (or six hours with a 110-volt charger). The cost for
a full recharge is 70 cents with the 110-volt charger. Fishman says
it's feasible to carry a small 110-volt charger as baggage on
cross-country flights.

1 horsepower = .75kw. So 5.6 kilowatt hours is only 7.51 horsepower
hours. Good enough for a short burst to get you to altitude and soar
the thermals, bu you aren't going anywhere cross country.

I would say that depends on how much power the aircraft requires for
sustained level flight. If that can be achieved on 5 hp, the battery
will theoretically provide 1.5 hours run time (assuming 100%
efficiency).

Compare it to a really inefficient 2 stroke, burning .6 lb/hp-hr.
Your battery is equal to .75 gallons of gas.

What is the difference in cost between that amount of fuel and the
cost to charger the battery? Noise? Vibration? Reliability? ...

I give Mr. Fishman credit for the success his project has achieved to
date considering its funding and staff.

Richard Riley wrote:

On Jun 16, 7:37 pm, Larry Dighera wrote:

How Beat The High Cost Of Fuel

The motor is powered by a 78 pound, custom-built lithium-ion polymer
battery with a power output of "5.6 kilowatt hours"; projected life is
300 to 500 full discharge cycles or more than 1,000 partial cycles.
The battery can be recharged in as little as two hours using a
220-volt charger (or six hours with a 110-volt charger). The cost for
a full recharge is 70 cents with the 110-volt charger. Fishman says
it's feasible to carry a small 110-volt charger as baggage on
cross-country flights.


1 horsepower = .75kw. So 5.6 kilowatt hours is only 7.51 horsepower
hours. Good enough for a short burst to get you to altitude and soar
the thermals, bu you aren't going anywhere cross country.

Compare it to a really inefficient 2 stroke, burning .6 lb/hp-hr.
Your battery is equal to .75 gallons of gas.

Wait a second...5.6 KWH doesn't really tell you how much HP it is, does
it? All it says is that it consumes 5.6KW in an hour. If you only ran
the motor for 5 minutes per hours, the HP would be 12 times that or
approx. 90 HP. Using KW HOURS doesn't tell the whole story. Running a
100W light bulb 10 hours uses 1 KWH and so does running a 500W bulb for
2 hours but the 500W bulb does more work at any instant in time (it's a
lot brighter!). Now, if that motor was rated at 5.6KW, then yes, I'd
agree it is about 7.5 HP.

Scott

On Jun 22, 9:20 am, Scott wrote:
Richard Riley wrote:
On Jun 16, 7:37 pm, Larry Dighera wrote:

How Beat The High Cost Of Fuel

The motor is powered by a 78 pound, custom-built lithium-ion polymer
battery with a power output of "5.6 kilowatt hours"; projected life is
300 to 500 full discharge cycles or more than 1,000 partial cycles.
The battery can be recharged in as little as two hours using a
220-volt charger (or six hours with a 110-volt charger). The cost for
a full recharge is 70 cents with the 110-volt charger. Fishman says
it's feasible to carry a small 110-volt charger as baggage on
cross-country flights.

1 horsepower = .75kw. So 5.6 kilowatt hours is only 7.51 horsepower
hours. Good enough for a short burst to get you to altitude and soar
the thermals, bu you aren't going anywhere cross country.

Compare it to a really inefficient 2 stroke, burning .6 lb/hp-hr.
Your battery is equal to .75 gallons of gas.

Wait a second...5.6 KWH doesn't really tell you how much HP it is, does
it? All it says is that it consumes 5.6KW in an hour. If you only ran
the motor for 5 minutes per hours, the HP would be 12 times that or
approx. 90 HP. Using KW HOURS doesn't tell the whole story. Running a
100W light bulb 10 hours uses 1 KWH and so does running a 500W bulb for
2 hours but the 500W bulb does more work at any instant in time (it's a
lot brighter!). Now, if that motor was rated at 5.6KW, then yes, I'd
agree it is about 7.5 HP.

Scott

True, KWH is a measure of energy, whereas HP (and KW) is a measure of
power. Of course, this makes me wonder why the OP said the battery has
a "power output" of 5.6KWH; that statement doesn't make any sense.
Granted, he was obviously talking about the capacity of the battery,
not the power output, but if somebody is making an electric plane one
would hope they would know their terminology

Scott wrote:
Richard Riley wrote:

On Jun 16, 7:37 pm, Larry Dighera wrote:

How Beat The High Cost Of Fuel

The motor is powered by a 78 pound, custom-built lithium-ion polymer
battery with a power output of "5.6 kilowatt hours"; projected life is
300 to 500 full discharge cycles or more than 1,000 partial cycles.
The battery can be recharged in as little as two hours using a
220-volt charger (or six hours with a 110-volt charger). The cost for
a full recharge is 70 cents with the 110-volt charger. Fishman says
it's feasible to carry a small 110-volt charger as baggage on
cross-country flights.


1 horsepower = .75kw. So 5.6 kilowatt hours is only 7.51 horsepower
hours. Good enough for a short burst to get you to altitude and soar
the thermals, bu you aren't going anywhere cross country.

Compare it to a really inefficient 2 stroke, burning .6 lb/hp-hr.
Your battery is equal to .75 gallons of gas.

Wait a second...5.6 KWH doesn't really tell you how much HP it is, does
it? All it says is that it consumes 5.6KW in an hour. If you only ran
the motor for 5 minutes per hours, the HP would be 12 times that or
approx. 90 HP. Using KW HOURS doesn't tell the whole story. Running a
100W light bulb 10 hours uses 1 KWH and so does running a 500W bulb for
2 hours but the 500W bulb does more work at any instant in time (it's a
lot brighter!). Now, if that motor was rated at 5.6KW, then yes, I'd
agree it is about 7.5 HP.

Scott



The OP stated the motor was 18 H.P. "This year Fishman hopes to fly his
new ElectraFlyer-C (a re-engined Moni motorglider with an 18-horsepower
electric motor)..."

"Scott" wrote in message
...
Richard Riley wrote:

On Jun 16, 7:37 pm, Larry Dighera wrote:

How Beat The High Cost Of Fuel

The motor is powered by a 78 pound, custom-built lithium-ion polymer
battery with a power output of "5.6 kilowatt hours"; projected life is
300 to 500 full discharge cycles or more than 1,000 partial cycles.
The battery can be recharged in as little as two hours using a
220-volt charger (or six hours with a 110-volt charger). The cost for
a full recharge is 70 cents with the 110-volt charger. Fishman says
it's feasible to carry a small 110-volt charger as baggage on
cross-country flights.


1 horsepower = .75kw. So 5.6 kilowatt hours is only 7.51 horsepower
hours. Good enough for a short burst to get you to altitude and soar
the thermals, bu you aren't going anywhere cross country.

Compare it to a really inefficient 2 stroke, burning .6 lb/hp-hr.
Your battery is equal to .75 gallons of gas.

Wait a second...5.6 KWH doesn't really tell you how much HP it is, does
it? All it says is that it consumes 5.6KW in an hour. If you only ran
the motor for 5 minutes per hours, the HP would be 12 times that or
approx. 90 HP. Using KW HOURS doesn't tell the whole story. Running a
100W light bulb 10 hours uses 1 KWH and so does running a 500W bulb for 2
hours but the 500W bulb does more work at any instant in time (it's a lot
brighter!). Now, if that motor was rated at 5.6KW, then yes, I'd agree it
is about 7.5 HP.

Scott

You have a good point, but the KW Hours rating of the battery does seem a
bit low. Even when you consider that cooling drag nearly absent, what
little I think I know about the base airframe suggests that the battery
rating needs to be at least twice the stated amount in order to provide the
stated performance and endurance. The usual power of ten error in
transcription does not make much sense in this case, but there are
apparently two batteries of equal sive--and everything that I could find
appeared to originate from a single article.

In any case, it is interesting; but the economics really do not work based
upon the stated maximum10 year and 1000 hour battery battery life. Even if
the electricity was free and gasolene was more than twice its current cost,
the gasolene powered airplane, on which it is bsed, would still give much
greated utility for less cost. Nontheless, my hat's off to him for the
effort.

Peter

On Jun 21, 11:42 pm, Richard Riley wrote:
On Jun 16, 7:37 pm, Larry Dighera wrote:

How Beat The High Cost Of Fuel

The motor is powered by a 78 pound, custom-built lithium-ion polymer
battery with a power output of "5.6 kilowatt hours"; projected life is
300 to 500 full discharge cycles or more than 1,000 partial cycles.
The battery can be recharged in as little as two hours using a
220-volt charger (or six hours with a 110-volt charger). The cost for
a full recharge is 70 cents with the 110-volt charger. Fishman says
it's feasible to carry a small 110-volt charger as baggage on
cross-country flights.

1 horsepower = .75kw. So 5.6 kilowatt hours is only 7.51 horsepower
hours. Good enough for a short burst to get you to altitude and soar
the thermals, bu you aren't going anywhere cross country.

Compare it to a really inefficient 2 stroke, burning .6 lb/hp-hr.
Your battery is equal to .75 gallons of gas.

The technology is immature, but this is on the right track. When a
suitable battery is invented, there is no arguing that it will easily
replace small gasoline engines. And battery development is just
getting started, so things can only get better. We have not invested
in batteries other than for portable electronics.
I am sure many in 1903 argued that a horse drawn carriage could go
much farther and safer than the Wright flyer.

In rec.aviation.piloting Andrew Sarangan wrote:
On Jun 21, 11:42 pm, Richard Riley wrote:
On Jun 16, 7:37 pm, Larry Dighera wrote:

How Beat The High Cost Of Fuel

The motor is powered by a 78 pound, custom-built lithium-ion polymer
battery with a power output of "5.6 kilowatt hours"; projected life is
300 to 500 full discharge cycles or more than 1,000 partial cycles.
The battery can be recharged in as little as two hours using a
220-volt charger (or six hours with a 110-volt charger). The cost for
a full recharge is 70 cents with the 110-volt charger. Fishman says
it's feasible to carry a small 110-volt charger as baggage on
cross-country flights.

1 horsepower = .75kw. So 5.6 kilowatt hours is only 7.51 horsepower
hours. Good enough for a short burst to get you to altitude and soar
the thermals, bu you aren't going anywhere cross country.

Compare it to a really inefficient 2 stroke, burning .6 lb/hp-hr.
Your battery is equal to .75 gallons of gas.

The technology is immature, but this is on the right track. When a
suitable battery is invented, there is no arguing that it will easily
replace small gasoline engines.

And when fustion reactors are invented they will replace coal and
fission plants.

And when anti-gravity is invented, it will replace airplanes.

And when...

And battery development is just
getting started, so things can only get better.

Batteries have been under development for well over a hundred years.

We have not invested
in batteries other than for portable electronics.

What do you think powered ALL the world's submerged submarines before
the Nautilus was launched in 1954?

What do you think powers the stuff in torpedoes and missiles and has
for about a half century, an extension cord?

Have you any idea what has powered telephone offices for over a
century?

Do you know what a UPS is and have you ever seen one the size of a
small house?

I am sure many in 1903 argued that a horse drawn carriage could go
much farther and safer than the Wright flyer.

In 1903 both the airplane and the car were new; it is now 105 years
later.


--
Jim Pennino

Remove .spam.sux to reply.