SEN 1187 - 27 Feb 2008
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Table of Contents - SEN 1187
F1A Flapper Genesis
M&K Factory Service USA
Engines for sale
New F1C Timer
3 Stooges and the Flight Line
Where can I get F1Q rules please? Ed Mate
F1A Flapper Genesis
Lee and others,
It now seems to me that flapped F1A development was essentially a
parallel and independent development by Allard and Gerd. There are
photos supporting the the first public appearance of both gliders:
Allard's at Holiday on Ice in 2004 and Gerd's at the Argentine WV in
2005.
The respective developments are quite different.
Allard used his normal Hibrid layout, a three piece wing with tip
dihedral and central single, centrally operated flap. The tips were
built up and the flap and centre panel being a foam core with a
high-modulus carbon cloth skin. The wing is bolted to the fuselage, so
moving the flap changes the wing's incidence relative to the fuselage.
Gerd used an eggbox structure on his usual 4 panel polyhedral layout
with all panels flapped. He also used a flap mechanism that I first saw
on Tom Koster's F1C at the Beja Euro-Champs. This keeps the LE and TE
fixed. The joiners are mounted on a servo-driven component that lowers
the flaps by raising the hinge line: the wing incidence relative to the
fuselage doesn't change as the flaps are operated.
I'm in the process of updating my F1A technical history to reflect this
information - this will happen as soon as my Libelle is through its
annual inspection and I have permission to use photographs of both
models.
Martin Gregorie
M&K Factory Service USA
The M&K factory representative (Jim Parker) has successfully completed the authorized M&K timer service training program and has the proper equipment to perform standard software loads / reloads. Jim will provide this service on a non-interference basis to his competition flying. Jim will contact the Factory in Russia which has a complete listing of the timer type and the soft ware loaded in it sold to the original buyer. If you have a used timer / model, please state that and the original owner if known. Best to start this process by email knowing it could take 1-4 weeks to get the correct software from the factory.
The US factory also supports the installation of Black Magic timers in M&K e-models (standard hook with reed switches, stab and / or wing wiggler servos). New models may be ordered this way or Jim will assist in converting existing M&K e-models. Do not even ask about help with non-M&K models (unless you're a SCAT member!).
Thermals, JIM
Engines for sale
Joe Wagner <This email address is being protected from spambots. You need JavaScript enabled to view it.>
Roger, I would again appreciate your listing these:
3 Cox Medallion .049 engines, 2 brand new in the box nver run: 1 not in box, may
have been run, but like new. All 3 have small exhausts slits legal for nostalgia. $65 each
plus shipping. ALSO: 1 Cox TD Special .15, excellent condition, with extra NV ass., backplate,
venturi, spinner, allen prop screws, 2 glo-heads, wrenches: $175 plus shipping.
2nd, Cox TD Special .15, good runner, 2 glo-heads, spinner, allen prop screws:
$125 plus shipping. These .15s would be legal for Vintage F1C.
Contact: Joe Wagner. This email address is being protected from spambots. You need JavaScript enabled to view it. or call after 6:30PM (410)778-3933.
thanks a lot,
Joe W.
New F1C Timer
SIDUS F1C - electronics timer with RCDT
I am glad to inform all the SEN list readers that the
already announced F1C electronic timer named "Sidus" is now
available.
Please find all the details and pictures at
http://www.ffelectronics.com
Best Regards
Massimo Ursicino
Italy
This email address is being protected from spambots. You need JavaScript enabled to view it.
3 Stooges and the Flight line
From : Tom Ioerger
Hi Roger
This is in reply to Aram's suggestions about moving the flight line. He never looks at the practical side of his ideas, but only at the theoretical benefit. There is already enough hassle in Wakefield and I and My timer/flying partner have to get a flight each, in every round. If I have to move two stooges and a thermal sniffer every time the wind shifts and/or search for a new pole 50 meters away from the previous one, I will start the Tar and Feather party for Aram and go to flying nostalgia Wake. Anyway, the thermals at the Max Men were so small that piggy backing only worked for a few poles and a very short time window.
Best Regards
Tom Ioerger
Where can I get F1Q rules please? Ed Mate
Ed, the FAI rules can be downloaded from the FAI Sporting code on the FAI Web Site at www.fai.org
go the aeromodelling section, then documentation then download the sporting code.
A copy is below ...
CLASS F1Q ELECTRIC POWER MODEL AIRCRAFT
3.Q.1. Definition
Model aircraft which is powered by (an) electric motor(s) and in which lift is generated by
aerodynamic forces acting on surfaces remaining fixed in flight, except for changes of camber or
incidence.
3.Q.2. Characteristics
Nickel Cadmium (NiCad), Nickel Metal Hydrate (NiMH) and Lithium (Li) batteries can be used.
Batteries should be wrapped in a transparent covering to allow their classification. The battery
pack will power the motor(s) as well as the controller(s) if they are used.
Maximum weight of battery pack (including connectors on the battery):
125g for NiCd or NiMH batteries
90g for Li batteries
External Battery packs are required to have a safety tether to the fuselage.
Safety locks must be used to prevent unintentional restarting of motor(s) after motor(s) have
been stopped.
Rule B.3.1. of Section 4b does not apply to class (No builder of the model requirement. )
Maximum duration of motor run:
time to be specified by the organisers up to a maximum duration of 25
seconds from release of the model
Motor runs may be timed statically on the ground by timing the motor cut-off. The motor run will
also be timed from the instant of launch until it becomes apparent from the model attitude that the
motor has stopped. If the motor run cannot be determined by observation of the model in flight
then the static ground run time is taken, if that had been demonstrated.
F1Q models may use radio control only for irreversible actions to restrict the flight, that is motor
stop and/or dethermalisation. Any malfunction or unintended operation of these functions is
entirely at the risk of the competitor.
3.Q.3. Number of Flights
7.
3.Q.4. Definition of an Official Flight
a) The duration achieved on the first attempt unless this attempt is unsuccessful under the
definition of 3.Q.5. If the attempt is unsuccessful under the definition of 3.Q.5.c and a second
attempt is not made then the duration of this first attempt is recorded as the official flight time.
b) The duration achieved on the second attempt. If the second attempt is also unsuccessful
under the definition of 3.Q.5.a or 3.Q.5.b, then a zero time is recorded for the flight.
3.Q.5. Definition of an Unsuccessful Attempt
An attempt is classed as unsuccessful if the model aircraft is launched and at least one of the
following events occurs. If this happens on the first attempt then the competitor is entitled to a
second attempt.
a) the time of the motor run from the release of the model aircraft exceeds the time specified in
3.Q.2 or 3.Q.8.
b) when a part of the model becomes detached during the launch or during the flight.
c) the duration of the flight is less than 20 seconds.
3.Q.6. Repeat of an Attempt
An attempt may be repeated when the model aircraft collides with another model in flight, or a
person other than the competitor himself while being launched. Should the model aircraft
continue its flight in a normal manner, the competitor may demand that the flight be accepted as
an official flight, even if the demand is made at the end of the attempt.
SC4_Vol_F1_FreeFlight_08 Effective 1st January 2008 Page 28
3.Q.7. Duration of Flights
The maximum duration for each flight is specified by the organiser up to a duration of three
minutes.
In the event of exceptional meteorological conditions or model aircraft recovery problems the Jury
may permit the maximum for a round to be changed. Such a modified maximum must be
announced before the start of the round.
3.Q.8. Classification
a) The total time for each competitor for each of the official flights defined in 3.Q.3 is taken for
the final classification.
b) In order to decide the individual placings when there is a tie, additional flights shall be made
after the last flight of the event has been completed. The motor run allowed for the first of the
deciding flights shall be 5 seconds shorter than that used in the rounds. The motor run will be
reduced further by 5 seconds for each subsequent flight, subject to a minimum run of 5
seconds. The maximum time for the deciding flights will remain at that defined in 3.Q.7.
c) The organiser will establish a 10 minute period during which all fly-off competitors must launch
their model. Within these 10 minutes the competitors will have the right to a second attempt in
the case of an unsuccessful first attempt for an additional flight according to 3.Q.5. Starting
positions will be decided by draw for each fly-off.
d) The Jury may permit the maximum for a round to be changed and/or the motor run to be
changed from that given under 3.Q.8.b according to conditions.
e) The motor run and maximum must be announced before the start of the round.
3.Q.9. Timing
a) See Section 4b, para B.12.
b) The timing of flights is limited to the durations specified in 3.Q.7 and 3.Q.8. The total flight time
is taken from the launch of the model aircraft to the end of the flight.
c) The motor run must be timed by two timekeepers with quartz controlled electronic
stopwatches with digital readout, recording to at least 1/100 of a second. The motor run is
determined as the average of the two registered times, and this average is reduced to the
nearest 1/10th of a second below.
3.Q.10. Number of Helpers
The competitor is entitled to have one helper at the starting pole position.
3.Q.11. Launching
a) Launching is by hand, the competitor being on the ground (jumping allowed).
b) Each competitor must start and regulate the motor or motors and launch the model himself.
c) The model must be launched within approximately 5 m from the starting pole position.
...........................
Roger Morrell