AOPA Pilot Magazine - August 2018 - 16

LETTERS

Do you prefer to fly in Experimental or FAA-certified
aircraft?
Experimental aircraft

14%

FAA-certified aircraft

49%

I'll fly whatever I can get

37%

my hands on

14%
37%
49%

Aviation eBrief poll

A quick web search turned
up some cursory information on
both Ms. Funk and the Mercury
13. Then, when I arrived home
from my afternoon stint at the
museum, I was greeted by the
June 2018 AOPA Pilot. I would
like to thank AOPA's Julie
Summers Walker for her most
timely essay, "Pilot Briefing: The
Mercury 13." With what I learned
from her, and from the Netflix
movie of the same name, I can
look forward to meeting a true
aerospace pioneer understanding
what her efforts, and those of her
associates, have done to open up
the field to my granddaughters.
Craig Marckwardt
AOPA 5753376
Dallas, Texas

Electric future

HANGAR TALK

Thanks for writing a sensible article ("Electric Power
Featured at Aero").
Batteries have 50 times lower
energy density (energy per unit

weight) than liquid hydrocarbons. The fact that the electrical
motor is about three times more
efficient than a heat engine (optimized piston or turbine) does
not make up for this massive difference in energy density. People
get misled by seeing Styrofoam
drones with lightweight cameras
buzz around for a few minutes. It's a different proposition
moving passengers and freight
considerable distances.
I used to do research in
battery materials, and I don't
see a way to radically improve
energy density. I can see that
going to solid-state electrolytes
will eliminate the fire danger,
and that clever nanostructures
might make it possible to have
faster charging and discharging,
but in both cases it won't be easy
to scale up from lab demonstrations to large-scale production.
A colleague showed me a
picture of the Bye Aerospace

Sun Flyer, intended as a trainer.
A simple calculation, based
on the material covered in my
book, showed that it couldn't
do what was claimed. It looked
like a Lancair, a very slippery
aircraft. Is this what we need
for a trainer? I'm having enough
trouble finding an insurance
company that will allow my son
(he is licensed, but low time) to
fly my Mooney.
Peter Rez
AOPA 1313913
Scottsdale, Arizona

Urban myth

A look through the historical
record will perhaps show that
any connection presented as
fact between Orville Wright
and Bob Cummings and Bob
Cummings' father, Dr. Charles
Cummings, is fiction ("Test
Pilot," May 2018).
This prospect of fiction
begins in 1909 with Wilbur and
Orville Wright in a tent next to
the Southern Pacific Railroad station in Joplin, Missouri. Orville,
lying there looking like he was
dying, was very ill with food poisoning (probably from the food at
a local restaurant) and "barbers
itch" with running sores all over
his face (due to a barber's shave
in Pratt, Kansas). A local Joplin

"'We've done it!' my wingman, Olivier Langeard,
transmitted on the aircraft radio as we flew our
TB30s in formation for the first time on a gorgeous Delaware evening," says MIKE FILUCCI, right,
AOPA vice president of flight operations and new
owner of a French-made Socata Epsilon TB30 (see
"BONJOUR" on p. 50). "It was such a rush to be
strapped into the Epsilon, flying just a few feet away
from Olivier, who had first told me about these wonderful airplanes, then made owning
and flying them in the United States a reality for us. This flight had been four months in the
making. It started in early 2018 when a group of us gathered at the Câteuadun Air Base, 70
miles southwest of Paris, to disassemble 13 Epsilons, pack them into shipping containers,
and send them across the Atlantic. There were a couple of anxious weeks as we tracked
the container ship across the ocean, but our cargo finally arrived safely. To no one's surprise, reassembly was more difficult and took longer. But what a prize."

16 | AOPA PILOT August 2018

doctor-Dr. Charles Cummings-
was summoned. After a couple
days in the hospital, Orville
was up and about. Dr. Charles
Cummings was the soon-to-be
father of Bob Cummings, born
the following year.
Quite the story. The historical record, however, will
perhaps show it to be hollow, that Wilbur and Orville
Wright never did make that
trip to Joplin-let alone to Pratt,
Kansas, for Orville's shave.
Thus, the various stories
that have been spun-beginning
with the opening story above-
that involve Orville Wright, Dr.
Charles Cummings, and Bob
Cummings would simply be
tales of popular myth.
Terry Golden
AOPA 9406307
Bloomington, Minnesota

Fuel burn basics

Ken Scott did a great job in his
June 2018 article "Goosed,"
except he knows nothing about
Pratt & Whitney R-985s. I have
been flying behind an R-985
for 20 years in my Stinson Gull
Wing Reliant. He states, talking about fuel burn, "they burn
about 45 gph apiece when
pulled back for an easy cruise."
He should have said, "They
burn about 45 gph together." At
an "easy cruise" (27 inches manifold pressure, 1,850 rpm), one
will burn 22 gph. It will burn 45
gph at takeoff power, but you
can hold that power for only a
maximum of five minutes without doing engine damage.
Anthony Wright
AOPA 1008905
Meadow Vista, California

We welcome your comments.
Editor, AOPA Pilot, 421 Aviation
Way, Frederick, Maryland 21701
or email (pilot@aopa.org). Letters may be edited for length
and style before publication.



AOPA Pilot Magazine - August 2018

Table of Contents for the Digital Edition of AOPA Pilot Magazine - August 2018

Contents
AOPA Pilot Magazine - August 2018 - Intro
AOPA Pilot Magazine - August 2018 - Cover1
AOPA Pilot Magazine - August 2018 - Cover2
AOPA Pilot Magazine - August 2018 - Contents
AOPA Pilot Magazine - August 2018 - 2
AOPA Pilot Magazine - August 2018 - 3
AOPA Pilot Magazine - August 2018 - 4
AOPA Pilot Magazine - August 2018 - 5
AOPA Pilot Magazine - August 2018 - 6
AOPA Pilot Magazine - August 2018 - 7
AOPA Pilot Magazine - August 2018 - 8
AOPA Pilot Magazine - August 2018 - 9
AOPA Pilot Magazine - August 2018 - 10
AOPA Pilot Magazine - August 2018 - 11
AOPA Pilot Magazine - August 2018 - 12
AOPA Pilot Magazine - August 2018 - 13
AOPA Pilot Magazine - August 2018 - 14
AOPA Pilot Magazine - August 2018 - 15
AOPA Pilot Magazine - August 2018 - 16
AOPA Pilot Magazine - August 2018 - 17
AOPA Pilot Magazine - August 2018 - 18
AOPA Pilot Magazine - August 2018 - 19
AOPA Pilot Magazine - August 2018 - 20
AOPA Pilot Magazine - August 2018 - 21
AOPA Pilot Magazine - August 2018 - 22
AOPA Pilot Magazine - August 2018 - 23
AOPA Pilot Magazine - August 2018 - 24
AOPA Pilot Magazine - August 2018 - 25
AOPA Pilot Magazine - August 2018 - 26
AOPA Pilot Magazine - August 2018 - 27
AOPA Pilot Magazine - August 2018 - 28
AOPA Pilot Magazine - August 2018 - 29
AOPA Pilot Magazine - August 2018 - 30
AOPA Pilot Magazine - August 2018 - 31
AOPA Pilot Magazine - August 2018 - 32
AOPA Pilot Magazine - August 2018 - 33
AOPA Pilot Magazine - August 2018 - 34
AOPA Pilot Magazine - August 2018 - 35
AOPA Pilot Magazine - August 2018 - 36
AOPA Pilot Magazine - August 2018 - 37
AOPA Pilot Magazine - August 2018 - 38
AOPA Pilot Magazine - August 2018 - 39
AOPA Pilot Magazine - August 2018 - 40
AOPA Pilot Magazine - August 2018 - 41
AOPA Pilot Magazine - August 2018 - 42
AOPA Pilot Magazine - August 2018 - 43
AOPA Pilot Magazine - August 2018 - 44
AOPA Pilot Magazine - August 2018 - 45
AOPA Pilot Magazine - August 2018 - 46
AOPA Pilot Magazine - August 2018 - 47
AOPA Pilot Magazine - August 2018 - 48
AOPA Pilot Magazine - August 2018 - R-1
AOPA Pilot Magazine - August 2018 - R-2
AOPA Pilot Magazine - August 2018 - R-3
AOPA Pilot Magazine - August 2018 - R-4
AOPA Pilot Magazine - August 2018 - R-5
AOPA Pilot Magazine - August 2018 - R-6
AOPA Pilot Magazine - August 2018 - R-7
AOPA Pilot Magazine - August 2018 - R-8
AOPA Pilot Magazine - August 2018 - 49
AOPA Pilot Magazine - August 2018 - 50
AOPA Pilot Magazine - August 2018 - 51
AOPA Pilot Magazine - August 2018 - 52
AOPA Pilot Magazine - August 2018 - 53
AOPA Pilot Magazine - August 2018 - 54
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AOPA Pilot Magazine - August 2018 - 78
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AOPA Pilot Magazine - August 2018 - Cover3
AOPA Pilot Magazine - August 2018 - Cover4
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