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Rotary in the Lead

Bill Eslick leads a formation of airparkers in fast ships. Photo from www.weslick.com

EAA CHAPTER 983 April 2010 Issue

This issue:PC to Mac, for a whole new look!

VOLUNTEERS NEEDED FROM THE CHAPTER Even though the food is being handled by our club, the need for volunteers is greater than ever, thanks to plans for a bigger fly-in than we’ve ever had, at Pecan. See Page Three for specialties, the contact people for each.

April 10th Meeting Doug began the April

10th meeting by mentioning that President John

McComas and wife Suzette are somewhere in

the Caribbean, far from the daily grind. Several

members weighed in with various news. Among

them, Don Saint says the Kitfox is coming along

briskly. Jim Crain spoke briefly about a

challenging ferry flight, bringing his new RV-7A

all the way down from upstate New York. He

dodged weather for much of the trip, even had

an ice encounter near Hot Springs. Dick Keyt is

racing towards completion of the Polen Special,

meticulously forming his new panel to match the

curvature of the sleek aircraft. Les Staples

reports that his RV-10 project is 90% done, “that

means only 90% to go!” His lovely bride,

Brenda, flew her second long cross-country.

Doug announced that Chris Webb is indeed

going to the EAA Air Advanced Academy, having

attended the Basic Academy years ago. A note

from Scott Purdue was read, in his absence.

Scott is a friend of Chapter 983 and the newest

addition to the Pacific Prowler warbird team.

This season, owner Jim Terry has instructed

Purdue and the team to offer Second in

Command checkouts in the B-25, weeks on the

airshow circuit, and aerial photography

adventures. Want to be a celeb? AV8

Magazine is a quality, online publication

currently searching for pictures of your

airplanes, along with a brief 150-word blurb

about it. Les is a subscriber, gives the

publication high marks.

See Bill Eslick’s

presentation, next page!

COUNTDOWN TO THE BIG FLY-IN

JUNE 12TH !

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There are two rotary engines in aircraft owned by our members.

Bill Eslick and Jason Hutchinson are our rotary guys, both whizzing around in sleek RVs, getting more decibels per dollar than virtually anyone out there. But, as Bill pointed out during our most recent meeting, the engine has distinct advantages, including three moving parts, low acquisition costs, superb fuel economy.

The Wankel engine invented by German engineer Felix Wankel, is a type of internal combustion engine which uses a rotary design to convert pressure into a rotating motion instead of using reciprocating pistons. Its four-stroke cycle takes place in a space between the inside of an oval-like epitrochoid-shaped housing and a rotor that is similar in shape to a Reuleaux triangle but with sides that are somewhat flatter. This design delivers smooth high-rpm power from a compact size. Since its introduction the engine has been commonly referred to as the rotary engine, though this name is also applied to several completely different designs.

The engine was invented by German engineer Felix Wankel. He began its development in the early 1950s at NSU Motorenwerke AG (NSU) before completing a working, running prototype in 1957. NSU then licensed the concept to companies around the world, which have continued to improve the design.

Because of their compact design, Wankel rotary engines have been installed in a variety of vehicles and devices such as automobiles (including racing cars), along with aircraft, go-karts, personal water craft, chain saws, and auxiliary power units. The most extensive automotive use of the Wankel

engine has been by the Japanese company Mazda. Wikipedia

The engine rotor rotates at 1/3 the speed of the crankshaft. Three complete revolutions of the crankshaft to complete the entire thermodynamic cycle. Obviously, we have a disparity. How can we get a relatable number to compare to a 4-stroke engine? The best way is to study 720° of rotation of the two-rotor engine. Every 360° of rotation, two faces of the engine complete a combustion cycle. 720° will have a total of four faces completing their cycle.

Bill brought along a section of the engine so that members could see how the rotor functions. That was immensely helpful in understanding the basic principle, seeing that indeed there is very little to wear out in these amazing powerplants.

ROTARY POWER

The Genius of Rotary These engines are truly ahead of their time. Only three moving parts comprise this powerplant. Wear of the valuable parts is virtually non-existent. What does age: seals. The engines are plentiful and less expensive than the disappointing array of “Legacy Motors” out there. So, why doesn’t every builder hang one on his or her plane? For one, the exhaust is much hotter than that of conventional engines. A truly reliable muffler that would provide more than a hundred or so hours of service weighs entirely too much for the application. So, the engines eat mufllers. Another minor drawback is the need to mix oil into rotary engine gas. Check out RealWorld Solutions for more information about these motors.

A Wankel engine in Deutsches Museum in Munich, Germany

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This year could attract an unprecedented number of attendees.

An influx of Vans RVs could make this year’s fly-in the most exciting

on record. Fifty or more additional attendees are likely, says Vice

President Doug Crumrine. Indeed, the Chapter is wading into

unfamiliar territory, particularly when it comes to parking.

Dick Carmichael is leading the charge in that area, and asks

Pecan residents to steer clear of the mainstream parking

areas. Karen Tucker stressed the outreach aspect of

including “Old Eagles,” meaning adults who would like to fly

during our event. Jim Crain has stepped up to the plate in the

new and unexplored realm of offsite parking, something never

before needed at our Chapter events. Dave Christman is spearheading

Setup and Teardown. Debbie Keyt is heading up the raffle. The

weather carefully examined when arriving at this year’s date:

12 June is statistically our best bet for balancing the need for

afternoon temperatures that won’t melt the soles of our

shoes, but with the least chance of rain. Even in perfect

weather, pilots will have to exercise additional caution:

congestion in the skies and on the ground will no doubt be

more than any of us have seen, in the past.

Here come the RVs!Vans Air Force is joining our fly-in this year, adding dozens of their magnificent planes to the fun.

DIFFERENCES THIS YEAR FOOD AIRCRAFT PARKING

YOUNG EAGLES AUTO PARKING

Pecan Country Club elbowed aside local vendors; but, they pledge to furnish the highest level of service

Tight spaceTo ease congestion, locally-based aircraft are asked to find alternative parking sites

Insurance Flying kids conveys EAA coverage, but pilots’ insurance applies if Old Eagles are flown

Remote parkingShuttles will carry visitors from off-site parking near Nutcracker Club to the airpark

June 12th

FLY-IN UPDATE

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Classified AdsFor Sale By Members

1946 Aeronca Chief 11-AC Project LSA Eligible Wings and tail covered with

Stits Polyfiber system, fuselage uncovered (have sock). Low time Cont. A-65 with metal prop, new

Slick mags still in box, gallons of Poly-Fiber finishing supplies, most parts and instruments. Needs new struts. Has log books. $9,500 Gene Chiappe Hm 817 573-7393 Wk 573-2250

Discounted for Chapter Members

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UPCOMING EVENTS

May 8 Dynon Avionics At our May meeting, the company behind these EFIS avionics

Pecan Plantation (0TX1)

June 12 Chapter 983 Fly-in Pecan Plantation (0TX1)

July 10 Vertical Power The makers of revolutionary solid state electrical systems, at our July meeting

Pecan Plantation (0TX1)

Aug 14 ECI Presentation At our monthly meeting, a talk by ECI Aero

Pecan Plantation (0TX1)

Sept 11 Tour of Lockheed Martin Fort Worth

Oct 2 Scott “Skysmith” Smith An early October meeting, discussion of aviation insurance coverage

Pecan Plantation (0TX1)

Nov 13 Exxon Elite At our monthly meeting, a presentation by Exxon about their Elite aviation oils

Pecan Plantation (0TX1)

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Chapter Projects

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Our Proud Sponsors

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