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Introduction -
About RV Kitplanes
In the early 1970s, a skinny young engineer from
rural Oregon built himself a better mousetrap. Actually,
in this case, it was a better airplane. Richard (Van)
VanGrunsven’s RV-3 impressed a lot of people, and it
turned out that many of them were willing to take on the
task of building an airplane from scratch so that they,
too could have an airplane that flew like Van’s.
Seizing the opportunity to work with his real love,
aviation, Van's Aircraft, Inc. began in 1973 with
partial kits for the RV-3. These were manufactured by
Van himself, working in a small shop behind his house in
Reedville, Oregon. Later the company moved to North
Plains, Oregon, a small town about 25 miles west of
Portland. After twenty years and several expansions, Van’s
had exhausted the available opportunities in North
Plains, so in 2000 the company moved to a new 60,000
square foot facility on the Aurora, Oregon airport.
Currently the company employees 70 people (and hundreds
more in sub-contract roles) and keeps them busy
producing several hundred complete aircraft kits a year
and shipping them all over the world.
The RV "model line" has expanded
considerably in thirty-one years.
(The RV, of course, stands for Richard VanGrunsven, who
still heads the company and commutes to work from his
home airstrip every day. Nobody has ever accused him of
being original when it comes to naming airplanes…)
Here’s a brief history and chronology:
The RV-3’s outstanding performance gained an
enthusiastic following, and naturally, many pilots
wanted to share the experience with a friend. Van
resisted for a while, reasoning that a bigger, heavier
airplane just couldn’t perform as well as a light
single-seater, but eventually he recognized the depth of
the demand and began developing a two-place airplane.
Tandem seating was chosen for the RV-4 because of the
lower drag, superior centerline visibility, lighter
weight, and overall fighter-like sportiness. It was a
combination well suited to the market it entered in
1981. With performance nearly that of the RV-3 and an
extra seat as well, the RV-4 became an immediate
favorite and soon surpassed the RV-3 in popularity.
In the early to mid 1980s, the homebuilt market began
to shift toward efficient touring, rather than pure
sport airplanes. In response, Van’s developed the
side-by-side RV-6.
Careful design and attention to aerodynamic details
resulted in a new airplane that retained the delightful
handling and short field qualities of the RV-4, and
despite the wider fuselage, had a top speed only 3 mph
less. The trigear RV-6A was developed from the RV-6 to
better fill the needs of the modern pilot. The addition
of the nosewheel reduces the top speed only 2 mph.
In 1995, Van’s revisited the tandem concept and
came up with the RV-8, a new design incorporating
improvements learned from years of experience with the
RV-4 and RV-6/6A. With a wider cockpit than the RV-4,
two baggage compartments and increased instrument panel
space, the RV-8 offers greater cross-country comfort
without compromising the fighter-like sportiness of
centerline seating. The RV-8 was designed to handle
engines of 150-200 hp, and with the 200 hp IO-360
Lycoming, it sustains cruise speeds of 212 mph. Top
speed is 222 mph. Naturally, the next question is: what
about an RV-8A? The answer is, yes, of course! The RV-8A
made its first flight in April 1998 and kits were
available soon after.
The RV-9A, a side-by-side tricycle-gear design, was
first flown in December 1997. A completely new wing with
a higher aspect ratio and new airfoil gave excellent low
speed flying qualities and very efficient cruise.
Similar in size and weight to the RV-6, it cruises at
about the same speeds, but stalls several miles per hour
slower. This wing permits the use of lower-powered
engines, providing an alternative for those who don’t
feel the need for a "bigger, faster, more
powerful" airplane. Somewhat later, the RV-9
tailwheel version was developed.
In the spring of 2001 the 2-seat side by side RV-7/7A
was introduced, replacing the RV-6/6A. The RV-7/7A has
slightly more leg and headroom than the RV-6/6A, carries
more fuel, and has a higher allowable gross weight. It
will accept all 4-cylinder Lycoming engines from the 150
hp O-320 to the 200 hp IO-360. The kit incorporates all
of the advanced technology that Van’s learned
designing and producing the RV-8/8A and the RV-9/9A.
In 2003, Van’s ventured into a whole new world and
offered the RV-10, our first four-place airplane.
Designed as a true four-person airplane (the ability to
carry four people is different than having four seats)
the RV-10 will carry four full-sized adults, sixty
gallons of fuel and baggage. Speeds and performance are
comparable to the two seat RVs, and better than most
four-place production airplanes.
In 2005, about 4,000 RV kits (an average of almost
130 per year for the history of the company) have been
completed and flown, and thousands more are under
construction. Completion rates have exceeded one per day
for the last few years. RVs are flying in at least 26
different countries and are under construction in more
than fifty.
What about the RV-2 and RV-5? The RV-2, believe it or
not, was a wooden flying-wing sailplane. Van started
construction in the early 70s but the airplane was never
finished or flown. Parts of it still hang on his hangar
wall. The RV-5 was a very small metal single-seater,
designed by Van and built by a group of friends from a
local EAA chapter. Although it flew quite successfully
with a small two-stroke engine, only one was ever built.
It is still in Van’s hangar and one of Van’s
engineers recently surveyed it with an eye toward
restoration…it may fly again!
RV Aircraft are low-wing
monoplanes of traditional aluminum construction. They use simple steel
rod or leaf fixed landing gear. Aileron and elevators are controlled by
a between-the-knees stick driving the surfaces through pushrods and ball
bearings. The rudder is controlled by stainless steel cables. Fuel is
contained in two sealed, removable, portions of the leading edge, and
routed through a selector valve in the cockpit to the engine driven fuel
pump. An electric fuel pump is installed in the system as a backup.
RV structures are "monocoque" or "stressed skin"
designs. This means that the skins provide much of the airframe’s
strength. The primary bending loads of the wing are carried by the
single main spar. Wing torsional and drag loads are carried by the wing
skins and rear spar. The same is true of the tail surfaces. The fuselage
skins, whose shape is maintained by formed aluminum bulkheads, provide
torsional and bending strength. Aluminum angle longerons in the fuselage
provide stiffening for the skin and greater strength at localized points
of attachment.
The RV-4 and RV-8/8A are soloed from the front seat, but elevator and
aileron controls for the rear seat are also provided. The RV-7/7A,
RV-9/9A and RV-10 feature full dual controls, except passenger brakes,
which are optional. Baggage space in the RV-4 consists of about 7 cubic
feet in a compartment behind the hinged seat back. Weight allowed is
about 35 pounds, depending on optional equipment and other loading
factors. The RV-4 has an optional front baggage area, accessible from
within the cockpit, that can carry up to 15 pounds. The wide forward
fuselage of the RV-8/8A provides not only more instrument panel space,
cabin width and foot room than the RV-4, but also allows a forward
baggage compartment between the instrument panel and the firewall. It
holds about 4.75 cubic feet, and is accessible through an outside door.
The traditional baggage compartment behind the rear seat remains. By
having two places for baggage, one forward and one aft, the pilot has
more loading options and is better able to control the CG. The RV-7/7A
and RV-9/9A carry baggage behind the seats in a large 12-14 cubic foot
bay. Depending on various factors (mostly the engine and propeller up
front) they can carry between 65 and 100 pounds of baggage and two
adults. The RV-10 has a generous baggage compartment aft of the rear
seats, reached through a baggage door on the left side. The rear seats
can be removed in a minute or two, providing a truly huge space.
All RV wings are relatively low aspect ratio, constant chord designs
with no taper or twist. This planform offers light weight, easy
construction, and favorable stall characteristics. The wide chord
maximizes the permissible CG range. It also provides generous wing area
and low wing loading even in a wing of short span. Because of this low
wing loading, climb and altitude performance are unusually good for an
airplane of such short span. Two-seat RVs (the RV-9/9A excepted) use the
proven NACA 230 series airfoil. These are turbulent flow airfoils with
very low pitching moments. They do not require perfectly smooth surfaces
to achieve good performance, so they remain almost unaffected by bugs
and rain. The low pitching moment allows cruise trim drag to be kept to
a minimum. The RV-9/9A uses a new Roncz airfoil design with a slightly
longer wing span, shorter chord and slotted flaps for better low speed
performance. The RV-10 uses a similar wing, but with a slightly
different airfoil.
The most important part of the airplane is the people inside it.
Their safety is paramount. Since forward visibility and safety are close
relatives, upright rather than supine seating was chosen. We felt that
it would be illogical to lay the passengers down and then have them try
to see forward over the engine. Operational safety and crash
survivability, often overlooked in homebuilts, are primary concerns to
everyone at Van’s. First, to limit the possibility of accidents, RVs
have excellent controllability, gentle stall characteristics, and superb
visibility. In the event of an unavoidable crash landing, (engine
failure over rough terrain, for instance) their low landing speed has
been a real lifesaver. A crash at 50 mph is 70% more survivable than one
at 65 mph. This, along with the rugged cockpit structure and sturdy roll
bar should permit you to walk away from, or at least survive, almost any
controlled landing.
Comfort is also important. Too many airplanes contort their occupants
to suit their shape. We choose to provide generous legroom, shoulder
room and head room first and design the airplane around them. RV
cockpits are quite roomy and accommodate pilots and passengers up to 6’
4’’ tall -- even taller in the RV-8/8A. Minor modifications are
possible to allow even taller people to fit.
Easy maintenance was another prime consideration. Controls, linkages
and fittings are easy to install and service. Removing everything
necessary for a complete annual inspection (cowl, inspection covers,
fairings, etc.) takes less than an hour. The straightforward, simple
airframe, control system and landing gear have only a few points that
require service. Given proper storage and maintenance, the airframe is
essentially a "life-time" structure.
RVs are designed and built so they can be dismantled when necessary.
All of the tail surfaces removable. Wings are constructed in two
separate panels and simply bolt to the fuselage. The landing gear
attaches with just a few bolts. This permits easy transport to the
airport for initial assembly, or later disassembly for major
maintenance. Disassembly does require disconnecting the control,
electric and fuel systems, so RVs should not be thought of as
"take-home" or "trailerable" airplanes.
In the early days, Van
coined the term "Total Performance’ to describe his design goals.
In thirty years, we haven’t come up with a better description. While
the RVs are excellent cross-country airplanes, they are not simply
"go-fast" machines.
They have outstanding low speed characteristics and short-field
capabilities; a rare combination. Most are capable of delightful sport
aerobatics.
First and foremost, though, they are fun to fly. Their controls are
light, responsive, and beautifully harmonized. Chances are that you have
never flown an airplane that offers anything approaching the
exhilarating sensation of an RV.
Balancing all the competing and conflicting requirements involved in
a "Total Performance" airplane is a difficult task – just
think of how few airplanes have really done it well.
RVs are those airplanes.
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