Mac Para Muse 3 - Review from Thermik magazine 10-2011
www.thermik.at
The Muse 3 stood out among the EN-A gliders in the "Testival"
issue of July 2011. It was the representative which came
closest to being an intermediate glider.
In a solo test we now take a thorough look at look at
how well equipped this Czech glider really is.
Test pilot and text: Franz Altmann (Thermik Magazine,
Austria)
In ancient Greece, the Muse was believed to be a source
of inspiration, which should spur creative achievement.
This is a beautiful image, which aptly seems to be
especially true for the brand new EN-A category glider
from Mac Para Technology. From the beginning the
engineer, director and designer Peter Recek is not
unknown, quite the opposite. He is a veteran of the
flying scene, former member of the Czech national team
and privately a nice fellow. Despite his success Peter
speaks modestly about his designs even though his
gliders are now and were, time and again at the top of
the development. Most recently, he landed a
groundbreaking development leap with the Magus XC2.
Interesting is the view at the reorientation of the
manufacturer on the performance.
Despite the lack of mention in the specification Peter
reported a significant increase in performance even with
the new Muse. He speaks of a glide ratio of 8.3, one
rarely achieved in this category. But the true qualities
of the Muse 3 lie beyond the numbers.
Construction, Workmanship
Take off behaviour, handling and dynamic: The full
range of MacPara is built on these three pillars and in
the development of the Muse 3 they should not be
forgotten. A fourth, winning important pillar, is the
suitability for powered flight. Recently Mac Para has
sold many gliders to the U.S paramotoring market....
To comply with the inflexible requirements of the class
for trim, material selection and security is not easy.
The keyword is Safety: EN / LTF A class certification is
not obtained every day, so the balance must fit. Not an
easy target.
As mentioned in our Testival issue, Mac Para offers in
the safest A – category, two representatives. The Muse
should move to the upper limit of the class to include
the company requirements for powered flight. From this
point of view climbing performance is important, to keep
fuel consumption low. This orientation is also evident
from the technical specifications, with 45 cells and an
aspect ratio of 5.0, the design is clearly oriented to
the typical intermediate rather than to the rest of the
A-gliders. Like other manufacturers, the MAC PARA R&D
team developed a completely new airfoil to fulfil the
new requirements. In addition to the joy of climbing,
the glider should increase the dynamic and handling. The
basic shape of the Muse 3 is an ellipse, but this is
hardly recognizable due to the glider’s design. On the
leading edge are the omnipresent nylon rods and classic
Mylar.
The line concept is itself not very spectacular: The
usual four rows, each with 3 main lines illustrate the
requirement of powered flying. For paramotor use this is
a better guarantee of the continuity of the trimming.
Sheathed gallery lines speak the same language. This
requirement is also obvious from the risers which have a
separate hook-in point for powered flying. A glider for
everything: not a bad thing! The workmanship of canopy,
lines and risers are all very conscientious and there
are no grounds for criticism.
Take off
The sensitive pilot will notice immediately already
at take off that the Muse 3 is more consistent with
intermediate gliders. Front launching the climb is
characterized by high directional stability, but the
canopy must be braked at the top otherwise it will have
a tendency to overfly the pilot. What possibly can look
slightly tricky on the practice slope proves to be no
problem after getting used to it, mainly because the
canopy responds to the commands relatively quickly. The
sorting of lines is average for the number of lines and
makes inflation very nice.
The result is a ready “starter” which is not foolproof,
but in the hands of a talented beginner or advanced
pilot it is a great joy.
The reverse launch is similar. Especially pleasant is
the ease with which the canopy can be brought over
pilot’s head when sitting back. The responsiveness of
the Muse 3 during the launch can be easily controlled by
the brakes. This excludes the needs for frantic reaction
from the pilot to suppress the canopy with the brakes
which results only in indifference in many nursery slope
canopies. Clearly the Muse 3 asks for and provides more
than conventional devices in its class.
Flight characteristics
Whilst checking the reactions on the ground during
launch the pilot begins to understand that thoughts
about the handling are coming true. Nevertheless the
ease with which the Muse launches is fantastic.The wing
flies from the first second completely intuitively and
unaided. Responses to brake input and/or weight shift
are answered promptly and accurately. The wing quickly
and willingly accepts all inputs. The brake pressure
depending on the wing loading is medium to low, giving
comfortable and fatigue-free flying. Only the stall
point is not entirely easy to find, through its sheer
inaccessibility makes this hardly relevant. Provoking
the stall from normal reactions is not an option.
Highly encouraging is the “thermal capture”, “thermal
handling” and the “climbing joy” of this new A-glider.
While many other in the class counter entry into
thermals by unpleasant sitting back, this Czech remains
neutral. Usually stable above the pilot, steady height
gain is only noticeable from the sound of the vario.
Powerful and nevertheless well damped, the wing can
still be turned wonderfully gently, which is by far not
a must. Actually this is what separates the wheat from
the chaff!
Turbulent air under the Muse is hardly noticeable, in
accordance with its classification but more than most of
its A-class colleagues. In comparison the feedback is
immediate and direct via the brake pressure and is good.
The Muse 3 neither dives, sits-back, or levers out of
the thermal, to achieve this it must have no yawing
tendency.
Pitch and roll damping are more within the range of a
basic intermediate and it flies exactly like a glider of
this class. Provoked deformations reward the newcomer
with very pleasant behaviour. Collapses of the leading
edge progress laterally, so that the rear portion of the
canopy usually remains inflated. Even accelerated, it is
very difficult to collapse larger areas of the canopy.
Even with a completely passive pilot, the span only
starts to deviate from course in slow motion; however
the folded portion continuously opens starting from the
centre progressively to the outer wing.
Such a collapse or any cravat of the wing is hardly
possible. Even on full bar during the testing stage no
turns greater than 45 ° were flown. Indeed: an A-class
glider!
No-one would ascribe freestyle suitability to an
A-glider. However if the controls are operated bravely,
then the canopy builds an unhurried pleasant dynamic.
Hard to believe, but high wingovers are easily flyable,
enabled by the gliders high manoeuvrability and
responsiveness.
Suitability for SAT, Helicopter and Full-Stall are
hardly relevant for its main target group. Nevertheless:
the wing is like no other for learning these manoeuvres
the dynamic is there, although buried deep under a huge
safety cushion.
The final delight is the speed system. It operates with
relative ease and the glider reaches a respectable
maximum speed of 49 km/h. It is fascinating how docile
the Muse 3 is on full bar. Even big thermal transfers
could not induce a deflation, even performance-reducing
deformation of the leading edge did not occur during our
testing.
Descent methods
Big ears: Thanks to the split A-risers the ears
quickly folded without too much resistance. The
effectiveness was moderate to high. For opening you must
give the Muse some time. If necessary a supportive,
single braking impulse helps.
B-Stall: For a clean B-stall the pilot must grasp
the lines and pull vigorously. The forces are
considerable, but not insurmountable. Also during the
stall they remain high. The manoeuvre appears to be
quite stable, a tendency to warp could not be found. The
sink rate reached only about 6 m/s. After exiting, the
glider starts to fly immediately, without over-shooting.
Spiral dive: The high manoeuvrability somehow
deceives. You need to work to enter and maintain a
spiral properly, which is OK for a paraglider of this
class. The achievable sink rates are at 14-16 m/s, but
the canopy has to be held into the spiral. Exit needs to
be helped at first. Pressure decreases with the
increasing sink rates
Summary
Even after extensive flying and despite the
gentleness of the extreme flight manoeuvres one question
arises at the end: How can this glider be an A-category
glider? The Muse3 looks like an intermediate, flies like
an Intermediate, acts like an intermediate, shows
adequate dynamics and all this at much greater safety
margins. We searched in vain for a catch. In the light
of appealing performance, the good and especially stable
top speed, the amazing freestyle suitability or
suitability for powered flying, the question remains,
what more could you wish for. You can’t ascribe full
beginner capability to the Muse, but with a little
practice during training it should be possible to
upgrade to the Muse. Why not fly a fun glider from the
very beginning? The potential target group for the Muse
3 is very wide. Even after many years of flying
experience the Muse 3 never will act like a tank and
never act as barrier to the fun of flying. Quite the
contrary: The additional safety cushion allows no fear
flying; great handling leaves nothing to be desired even
by top pilots.
Amazing at the end: In addition to the excellent
free-flying properties, paramotoring with the Muse is
not only possible but also allowed and encouraged. One
thing is certain: It will be difficult to send back this
glider!
TESTING CONDITIONS
I have made a plurality of flights with the Muse 3,
in our home areas Ternberg, Micheldorf, Bischling and
the Dachstein / all in Austria.
Quick Assessment |
Materials and workmanship |
Materials
***** |
Robust, proven materials. The
only downside is the cheap-looking plastic
pulleys. |
Workmanship
**** |
Very good workmanship with
impeccable sewing. Suturing of the loops but
without further tension distribution. |
Take off behaviour |
Front launch
**** |
Reliable climb, high
directional stability, braking impulse at
the zenith necessary. |
Rear launch
**** |
Good control with brakes or
D-risers, high directional stability,
braking impulse at the zenith necessary. |
Flight behaviour |
Agility
***** |
Unrivalled high in comparison
to class. |
Steering ***** |
Good response to inputs,
medium control travel, excellent damping. |
Asymmetric collapse
***** |
Very high stability even
accelerated, rotation under 45 °, leisurely
opening from the centre of the wing. |
Speed system
***** |
Complies with all the
virtues: efficiency, ease of movement,
stability. |
Descent methods |
Big Ears
**** |
Simple introduction, moderate
folding depth, leisurely opening. |
B-Stall
**** |
High entry and follow-up
forces, moderate efficiency, stable stall
phase, barely any tendency to over-shoot
during recovery. |
Spiral dive
**** |
Leisurely development of sink
rates after some persuasion, moderate
efficiency.Active recovery recommended but
not required. |
Technical specialities |
Thin plastic rod
reinforcements in the leading edge, PPG
suspension points incorporated into the
risers. |
Suitability |
Talented newcomers, but also
experienced mountaineers, freestyle
aspirants, powered flight pilots, fun flyer,
infrequent flyer, frequent flyer. |
Rating |
*poor **average ***good ***very
good*****excellent |
|