| By : Dr George Papadatos
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(Part
II)
THE AIR CREATION GTE 582 TRIKE ON
FLOATS, WITH THE MILD 16M WING
At Lake Parker, apart from conventional
seaplanes and amphibians there were also a few Ultralights on floats.
A "Seawind" amphibious trike, which belonged to J&K Ultralights",
caught my eye. Unfortunately, its owner declined a flight because he
was too busy giving rides for money to bystanders. Cash on hand to some,
is preferable to a promise for magazine article.
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Next to the "Seawind",
there was a beautiful red Air Creation GTE 582 trike on floats registered
as "Experimental". It belonged to Kit Clews, a true aviation
enthusiast with a permanent smile on his face. His grandfather was
a Wall Street magnate and his father a famous sculptor who lived
in France and restored an old Castle in Cannes. |
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The Castle now belongs to a foundation, President of which
is Kit Clews. A pilot since nineteen, Kit, owned a number of
different planes. At age 50, he decided it was not too late
to learn how to fly a trike and bought the Air Creation. He
logged 110 hrs in two years. Maneuvering a trike in the water
requires elementary sailing skills; the wing must be positioned
relative to the wind depending on the direction you want to
go; particularly when docking. It is also necessary to have
an oar on board to paddle your way through moored boats and
other obstacles when approaching the shore.
Kit gladly accepted my request
for a flight. I climbed to the rear seat and there I was, after
flying one of the most powerful planes in the water, waiting
for another wet takeoff in a 65hp Air Creation float trike.
After clearing weeds and
going around a couple of seaplanes, Kit started taxiing downwind.
Spray was up and we were getting a bit wet. Moments later, he
turned into the wind and added full power, Seated comfortably
in the middle of the two floats, I had the sensation of being
in a flying Catamaran, as the trike gradually got "on step"
and headed skyward at about 550 ft/sec. On my right, I saw a
Ridge Runner on floats trying to match the speed of the Air
Creation. Flying only 200ft apart, we waved to the pilot who
waved back obviously enjoying his flight as much as we did ours.
Kit let me play with the
wing. It was not particularly heavy on roll and the trike felt
stable in a brisk 15mph+ wind and thermals. Cruise seemed to
be exceeding that of a couple of "Seawinds" flying
in the vicinity. Landing on floats and steering with water rudder
is not as critical as landing a conventional trike on wheels.
However, a novice float trike pilot can easily tip it over,
should touchdown or takeoff not be accomplished simultaneously
on both floats.
The ride in the Air Creation
was the complete antithesis to the one in the Aerocomp Ten.
If you love slow flight, unlimited visibility and that special
feeling of being under a big hanglider type wing in a totally
open environment over water, you may consider buying an Air
Creation. It is not cheap at $ 22000, but nice things are hardly
ever cheap in life.
ULTRALIGHTS AT PARADISE
CITY-CROWDED SKIES AND COLOURFUL SAIS
Entering the Ultralight area is like crossing
a border. Forget about the elaborate booths, sophisticated exhibits
and professional public relations people in the General Aviation
section of the airport. The atmosphere here is casual and laid
back. Exhibitors operate out of small tents, often act as pilots,
mechanics, sales persons and cooks, occasionally turning over
hamburgers on a grill. The place is crowded and buzzing with
activities of all kind.
It is not unusual to see
someone change sparkplugs before a flight or even take a motor
part while bellowing "Pass the f -- -ing ten millimeter
socket". Some flyers wore tattoos and headbands and they
drank like madmen in the evening parties. You get to love the
macho swagger of it, the rowdy rock-band-on-tour atmosphere.
Trike wings are rigged and
derigged, paraglider canopies are inflated for test runs and
machines are being wheeled constantly between the flightline
and the exhibitor area.
If you are in the market
for an Ultralight, Paradise City is a good place to be. Money
changes hands quickly here, as several aircraft, wings, motors
and projects are bought and sold. It is sensible to watch different
designs fly, get demo rides and talk to manufacturers and pilots
before you make up your mind what to buy.
The "Powered parachute"
phenomenon continues to capture the imagination of many more
than ever. There is something very appealing about seeing a
man take a couple of steps in the wind and then ascend slowly
to the heavens under a colorful canopy, as the sun sets in Paradise
City. Sailing the skies in touch with the world, is what Leonardo
Da Vinci once imagined.
TRIKE AND TRIKERS
Most major trike manufactures were represented
at "Paradise City" while North Wings and Sabre Aircraft
debuted new line trikes. Trikes are here to stay as their popularity
and numbers continue to increase. It is obvious that not every
professional lives up, or down, to standards set by General
Aviation.
Kamron Blevins, of North
Wings, has designed a number of trike wings, the most notable
one being the Mustang. Encouraged by the success of his wings,
Blevins designed three new trikes : The Apache, (a detailed
report is provided later in the article), the Maverick and the
ATF Soaring Trike.
The Maverick at 253 lbs.
Is a FAR 103 legal ultralight with a strutted topless 157sq.ft
wing. It stalls at 23mph and cruises at 45mph. Engine is a Rotax
447. This trike may appeal to be pilot who wants to be legal,
yet is after decent cruise speed, ease of storage and some soaring
capability.
The ATF is a soaring trike,
primarily for those who could attach their hangliding wing to
it and fly. At 90lbs, it is not among the lightest in that category.
Wing selection could be tricky for a 220-lb pilot, if he wants
to stay within the wings max allowable weight in bumpy
thermals.
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| At the Cosmos stand, Personal
Flight displayed floats made for the Samba and an inflatable boat
equipped with rudders and seats ready to be fitted with a trike
wing. Both were at the testing stage and soon will be available
for sale. |
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The Airborne Edge booth was
customer friendly and very organized. Wayne Bezner Kerr was doing
a wonderful job in answering questions and explaining, among other
things, performance and handling differences among the Wizard and
Streak wings. Knowledgeable persons like him can sell trikes.
I was promised a ride but things
were so busy that I never got to fly an Airborne. As Wayne once
said: "Ill fly with you, but if a customer comes up with
cash, he has priority".
Sabre Aircraft Inc unveiled
a new trike, the Venture. It is their-top-of-the line model, sold
fully equipped with pod, wheel pants, full instrumentation, shoulder
harness storage bags and composite prop. Engine options are either
a Rotax 503 (Venture 500) or a 582 (Venture 600).
The company was contacted by
e-mail to provide additional information for the article, but I
never got a response.
The trike appears state-of-the-art
and represents a significant departure from what Richard Helm has
been manufacturing so far, ie, one of the most popular and most
reasonably priced trikes in the US. Last year I flew two trikes
and I promised myself to fly more this year. I flew four.
MANAIR BLADE 912
At Manair, the crew representing
one of the longest established manufacturers of Ultralight aircraft
in the world spoke with a British accent and displayed, as expected,
a thoroughly professional attitude. When I first spoke to Trevor,
a well-known instructor at Atlantic Sport Aviation at New Smyrna
Beach, Florida about a flight evaluation of the Manair blade 912,
he asked me whether I wanted to have the front seat. "Yes,
but I am a low time trike pilot" I replied. "In that case",
Trevor said, "you should fly with John North".
It was a pleasure meeting John,
a 6000 hrs trike pilot, who operates a Flying School in the UK and
has twice won the prestigious British Rally. Asked how many emergency
landings he had, John North would only answer, "Several".
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The Blade 912, which carries a full type certification
in the UK, looked as solid as a trike could possibly look. The
cockpit was roomy and the instrument panel even had a directional
gyro.
While strapping into the front seat, Colin
Bodills incredible feat came to mind. How would it feel,
I thought, flying a "912 Blade" 13,596 miles alone
at an average speed of 78mph, from London to Sydney ? The familiar
sound of the 912 gave me a boost of confidence as I have flown
150 hrs in a Kitfox with the same engine without a single problem.
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On the ground the Blade offers a luxury ride,
absorbing all the irregularities of the grass field at Paradise
City.
Ground handling was easy and takeoff roll required
a minuscule effort in centering the nose-wheel. The trike tracked
straight as an arrow until we broke ground at about 350ft.
On climbout, things got busy. Winds was blowing
at 20mph+ and after clearing the trees, I got the full brunt
of the winds and rotors of the strip of Paradise City.
The 912 got us out of there in a hurry and
maintained a healthy climb over high sink rate areas. There
were no surprises in turbulent air such as dropping a wing tip
or having roll divergent tendencies. The 15.6-M wing remained
composed while the bar had a nice centering tendency. The rough
conditions persisted outside the pattern; I had to climb to
2000ft for smooth air.
After relaxing a bit, the Blade flew comfortably
hands off at an indicated 60mph. A slight pull on the bar and
speed would jump to 70 mph. Personally, I find it a bit uncomfortable
flying in any trike at that speed wearing conventional open-face
helmets that offer poor shielding from wind noise.
The Blade retained a solid feel throughout
all flight characteristics and thanks to the "finned spats"
(wheel pants) it had a coordinated feel in turns, as the chariot
moved in unison with the wing. Rolling into a turn required
some effort consistent with the characteristics of most cross-country
type wings. I am sure turning would be much easier flying solo,
compared to having a combined pilot and passenger weight close
to 400lbs.
Re-entering the pattern, I maintained 55mph
and kept it around 50 mph on final. After John made a small
correction, I managed to get the Blade safely the ground. Landing
was very predictable and rollout required no dancing with the
pedals to keep the trike straight.
The 912 Blade is a nice combination of quality,
reliability and performance. It will handle conditions in which
other trikes will be marginally controllable and the 80hp 912
can get you out of all sorts of trouble. While the Blade is
well suited for recreational flying around small airports, its
strongest attribute remains comfortable, cross-country travel.
With a stall speed of 30 mph, it allows slow flight over pastures
and hills, burning only 3 gallons of unleaded auto fuel per
hour.
THE "NORTH WINGS" APACHE TRIKE
In stark contrast to the Manair and Airborne
booths, North Wings had few if any qualified sales persons and
Kamron Blevins seems to be doing most of the work himself.
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The Apache is an all-American-made
two place trike featuring a dual mast good for additional strength
and rear passenger comfort. Standard equipment include: training
link front forks with spring and shocks, saddlebags, front fairing,
wheel fairings and a few instruments. The frame is steel and rear
suspension is fiberglass. It weighs 365lbs with the 503B. |
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The trike feels light and
compact and the rear seat is a delight. Kamron chose his favorite
wing for our flight, the Mustang 15. On rough days when the
wind was up to 20+mph and all other trikers would use double
surface wings only, Kamron would put the Mustang 15 on instead
of the double surface Contour wing.
The Apache with the Mustang
15 wing is a good marriage. In the air, the trike feels nimble
and the wing, as I reported last year, has a perfect blend of
stability and maneuverability; a delight to fly. At cruise,
I saw a consistent 50mph on the airspeed indicator, which I
thought was not far off. The suspension is surprisingly soft,
allowing smooth taxiing.
If you want a trike that
will not break your wallet, yet still provide comfort to your
passenger and a wing that will do almost anything well, fly
the Apache and see for yourself.
Another fact to consider when looking at the Apache is that
parts can be obtained and repairs can be performed in the US.
THE RAPTOR 582 WITH THE
XP17 WING
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One evening, I had the pleasure
to attend a trikers barbecue at Don Wolfs hangar
at South Lakeland airport. There were may trikes and light planes
there and the airport is ideally suited for Ultralight flying;
boasting a nice grass runway and ample tie-down and hangar space.
Dons hospitality brought
a group of true trike aficionados together. I met many pilots
in persons, whose names I only knew from exchanging views on
the Internet.
It was through our discussion
that an early form of camaraderie emerged, which perhaps will
become more defined over time. Free rides were offered to guests.
San Diego based Raptor dealer and AFI instructor Mike Huckle,
a tall man with piercing blue eyes who speaks in short sentences,
asked me if I wanted to fly the Raptor. To his credit, he did
not hesitate to put me, a low time trike pilot, in the front
seat.
Few if any trikes are made
to accommodate passengers who are 64" tall with long
legs. (see picture). Where was I supposed to put my arms? I
could not possibly rest them on Mikes knees as they were
sticking up too high. On the other hand, holding the bar with
my hands five inches apart was not a comfortable feeling either.
In the end, I managed somehow by twisting arms and wrists to
get a better grip on the bar. Ground handling and take off roll
were as good and predictable as in any well-designed trike.
In the air, the wing had a stable feel to it, but in turbulence,
the corrections needed to compensate for gusts required considerable
effort. Also, some stiffness was present when maneuvering the
wing into a turn. At no point, did I feel uncomfortable in turbulence
or that the trike was all over the place. I am sure that this
was one of the faster Raptor wings designed for cross-country
work.
On final, Mike grabbed the
downtube to make one or two minor corrections. Landing the Raptor
was no cause for anxiety, as it tracked as straight as the Manair
did on the roll out.
The flight was too short
to write more about it. Some day, Ill fly a Raptor again
with a different wing and have a little more time to play with
it.
Mikes knowledge and
experience inspire confidence in anyone who rides with him.
His students, I am sure, are getting some of the best trike
instruction around.
THE LATEST ON THE HKS
ENGINE
Last year I reported on
the troubles of the HKS engine. The company promised declares
and engine owners that problems associated with overheating
were going to be corrected.
HKS, true to its word, redesigned
the engine and is now delivering the new version. It appears
promising. In brief, the following changes have been introduced:
- flow of oil to the heads has now tripled
in volume
- alloy heads conduct heat better and the
valve seats have been changed
- Oil returning from the head goes to the
oil radiator via a galley
- Shape and angle of attack of sump have
been reconfigured to optimize cooling when engine is installed
on trikes
- Engine develops more torque, which allows
use of longer props with wide chord blades.
At "Sun n Fun"
I flew the newest Flightstar II trainer, which was used as a
test-bed for the new "version" engine. The HKS was
as quiet and as smooth as a 912. Oil pressure remained at 95psi
throughout our 35min flight. Idle was smooth, down to 500rpm
or even lower without the familiar gearbox rattle. Try that
with a 912.
HPower LTD imports the HKS
engine, and its President, Tom Peghiny, to introduced by the
factory.
CHOPPER TOWN
A John Deere tractor-trailer
shuttle, hauling passengers from one area of the airport, a
mile down the road from "Paradise City". There are
no crowds to speak of at "Chopper Town". Spectators
are mostly curious visitors who come to see what is going on.
Few gyroplanes and even fewer helicopters of the homebuilt variety
were at the flight line.
WHAT? A "FLYING
PLATFORM"?
Three guys were wheeling
around a nine-foot high platform, which looked like an announcers
stand. A closer look revealed two counter-rotating props underneath
the platform and two tiny engines on each side turning two equally
small model airplane type props.
It was "The Pam 100B
individual lifting Vehicle", using a counter-rotating rotor
lifting system powered by two Hirth, two-stroke, 105 hp engines.
Engine power came through two 2.64:1 engine gearboxes, centrifugal
and overrunning clutches and central counter-rotating gearbox.
The first things which comes
to mind to anyone who sees this unusual lifting vehicle is whether
it can get off the ground.
At the flight line, pilot
Clem Makowski climbed on top entered a small rectangular caged
area and stood in front of a control panel.
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| He nodded to his two assistants
who started the tiny "yaw engines" on each side, by
pulling on a rope, like you do with a chainsaw engine. The huge
counter-rotating props started to swing, raising a small cloud
of dust, when Clem fired up the main engines. Scenes from science
fiction movies started to race through my mind. |
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Was I about to witness a
scene from "Back to the Future"? A minute later, the
platform started to move inches above the ground; first sideways,
then forward and backwards.
Clem was using the simplest
possible form of lateral control; just leaning his body towards
the direction he wanted to go. Three minutes later, he added
power and it gradually started to lift. For about ten minutes,
Clem seemed to be fully in control of the platforms movements.
However, it never went higher than twelve feet or so, and while
hovering, one of the yaw engines quit but it did not seem to
matter. Landing was nothing more than a soft helicopter-like
touchdown.
The project has been in
existence and continuous development since 1989 and appears
to have reached a plateau beyond which some very daring experimentation
and/or a technological breakthrough is needed. It is not clear
what prevents Clem from reaching altitudes of 30 feet and higher
and covering distances up to a mile or so.
We many see this happening
by next year or sometime in the future. The men behind the project
deserve all the encouragement they can get, as all novel ideas
require long periods of research and development before they
can be safe for individuals to fly.
THE TWINSTAR GYROPLANE
AND THE UNFORTUNATE DEATH OF DON FARRINGTON
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I always wanted to fly a gyroplane but never
pursued that desire vigorously. Amorphous fears, probably related
to a high number of Bensen gyrocopter pilot deaths in the past
kept me away.
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This time, determined to fly one, I went around "Chopper
Town" to find what, in my opinion would be the best gyroplane
and the best pilot. Among the few gyros parked at the flight
line, the 18A, fully enclosed, Heliplane and the Twinstar (N72DE)
trainer of Air&Space Inc of Paducah, Kentucky got my attention.
They were the only ones powered by Lycoming aircraft engines
and flown regularly. Construction appeared more robust than
others did, but neither was equipped with a GRS ballistic chute.
Chief pilot and flight instructor was Don
Farrington, former Pan Am captain with all kinds of rations
and one of two in the US qualified to give check rides to Gyroplane
CFIs.
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He agreed to take me up in the "Twinstar".
Taxiing with a rotor spinning overhead felt strange at the beginning.
Rotor speed and not ground speed is the most critical aspect
of takeoff. Rotor is prerotated to about 150rpm and must reach
at least 300rpm before the gyro is ready to fly.
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The flight lasted about
25 min and it included two low passes for photo shots.
Flying a gyro is unlike
anything else Ive experienced. It falls somewhere between
a helicopter and a plane, depending what you are doing with
it. Takeoffs and landings are more airplane like; the rest is
definitely helicopter.
Don was a master of his
gyro. He impressed me with his precision flying, very steep
turns (steeper and tighter than trikes can make) and spot on
landings. Approaches were steep and he would flare about seven
feet above ground. Airspeed would bleed rapidly and landing
roll would be about 10-15 ft.
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Don was very helpful in going
over aspects of gyro flying, which your average fixed wing and
flex wing pilots do not know. He answered all my question and
invited me to Kentucky to take gyro lessons. His associates, John
Potter and Clem Anderson, were particularly friendly and hospitable. |
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Two days later, Don Farrington
crashed on climbout while at the controls of the 18A Heliplane.
The Heliplane veered to the right from an altitude of approximately
200ft and hit the ground sideways. At press time, the NTSB investigation
found no evidence of mechanical malfunction. Both types of gyros
have been flying for years without any fatalities. Most likely,
Don lost control due to temporary incapacitation of his senses.
He seems to have suffered a heart fibrillation, which would
have stopped his heart. He did not die from impact injuries
but from complications originating from aspiration i.e. the
taking of foreign matter into the lungs with the respiratory
current, in this case stomach acid. Such a condition is frequently
associated with heart problems.
His death came as a shock
to me Unfortunately in aviation, the worst can happen to the
best. I am sure that he will be missed by all who knew him and
particularly by the gyroplane community. Ironically, the Heliplane
was already sold to a customer and Don took it for a last ride
around the patch at "Chopper Town".
AN INTERVIEW WITH NIKOLAI
TIMOFEEF, ONE OF THE TOP FIVE AEROBATIC PILOTS IN THE WORLD
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Before attending "Sun n Fun",
I spent a day at Sebring airport, which hosts the southeast
regional aerobatic contest each year.
Apart from several Extras, one Staudacher 300 and a couple of
Sukhois, a large number of Pitts Specials were at the field,
competing against (Giles) G202s in the "Sportsman Class".
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Yes folks, G202s are now competing
in that class. Should one get bored watching airplanes roll and
snap he/she can walk across the street to the Sebring race track,
and watch the driver of a twelve cylinder Ferrari downshift from
140mph to negotiate a hairpin turn.
Timofeef was born in St Petersburg, Russia and has flown 2200
hrs of aerobatics since 1981 when he started to complete. Subsequent
to his 1992 World Championship win in France, he has gone on to
enjoy an unprecedented number of wins in world contests.
Q. What are you doing
in the US ?
A. trying to establish
an International Aerobatic Centre in the States. Florida offers
distinct advantages. Its good weather makes possible all-year-around
flying, even in January, and the price of fuel is cheaper than
in most parts of the world. The many attractions of Orlando
could keep the family entertained, while the father receives
aerobatics training.
The most likely location
for the Centre is Marianna airport in Northern Florida, where
local authorities and the FAA have been receptive to the idea.
Q. You still fly
the "Sukhoi 26". Last year the Russian team was split,
half flew the "26" and the other half the "31".
Any advantage in flying the "Sukhoi 31" ?
A. The team was split
for cost reasons. The "31" is over $ 200.000. the
"26" has won the most gold medals. In 1996, it won
all gold medals in Oklahoma City and in 1998, it took second
place in the Slovak Republic. The two planes are very similar
aerodynamically.
Q. In the US, the
Sukhoi has a controversial reputation. In other words, it is
an airplane that "will bite you"; very unforgiving,
particularly in spin recovery. Extras are considered easier
to fly. What do you think?
A. My airplane is
very clean and will come out of any spin or crazy tumble. Recovery
is "hands off, do no the plane, leave it alone and it will
recover". One must try hard to keep this plane in a flatspin.
It wants to pop out.
As far as difficulty in
flying it, let me say that the "26" was built fifteen
years ago but, I bet, someone can still discover a new maneuver
while flying it. It has that much potential even in World Aerobatic
Competition. For example, according to CIVA regulations, in
the Unlimited, seven figures should be flown for 120K. The Sukhoi
is so strong that it is probably the only one that can walk
away from such a demanding routine.
Q. What do you think
of the "Walter Extra"? Does it have the potential
of winning World Championships?
A. I am the wrong
person to answer that question because I have flown Sukhois
all my life. However, let me say this: it is an easy plane to
fly but difficult to make good snaps. I mean snaps which score
perfect in a contest. In brief, it is not the finest aerobatic
plane I have flown.
Q. The United States
is one of the richest countries in the world. There are huge
resources being allocated to sports. Most US pilots competing
in Unlimited can afford the Extras, Sukhois and pretty much
everything they want. Why arent US pilots winning worlds
contests? Why do Russian pilots like you and Sergei Boriak train
them? It is the training? Are Russian pilots state athletes?
What is it?
A. The way contests
are organized in the US promotes the sport of aerobatics, but
unlike Russia and Eastern Europe, it does not produce top results.
The aerobatic teams change
every year. Competitors should stay longer in the team to acquire
more experience in world contests while flying against the best.
For example Mike Goulian
and Matt Chapman, who flew well last year are not in the team
this year. For a new pilots it is very difficult to break into
a world class event with big names around. The judges do not
know who the guy is. A more professional approach is needed
to world aerobatic contests. More and better training will help.
Q. Anything new coming
out of the Sukhoi factory?
A. Times are difficult.
There is a lot of uncertainty in Russia and developing new aerobatic
planes is not a priority. I am sure that Mr Rakitan has some
beautiful ideas for modifications to existing designs and in
developing a sport aerobatic plane.
Q. What kind of conditioning
is necessary for hard acro and what are the most common medical
problems experienced by unlimited pilots?
A. Back pain and
middle ear problems affect top pilots. You should listen to
your body and develop appropriate conditioning techniques.
Q. How many Gs do
you pull in one of your average routines?
A. There is a misconception regarding unlimited aerobatics. People think that the better you are, the more Gs you should pull. Energy management is key here. I usually pull 8 Gs+/-. If you pull more you lose efficiency. Snaps I keep at 6.5 Gs. Sometimes, in an unknown routine, you may have to pull 9 or even 11 Gs doing configuration snaps like if you push up from 45 degrees and go inverted and have to do two snaps, you will end up with a high G load.
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