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Category: Archive 2010

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1. GB Team for Argentina
2. Latest FFQ
3. F1A Flyoff Blues
4. CA Invitational Results
5. Cool site for Aviation Buffs

Results for GB Team Selection events (3 contests, venues chosen to replicate Argentina site and conditions (rain, wind, concrete, buildings, trees, stunt cows, etc) :-

F1A: Richard Jack, Peter Williams, John Carter - Reserve CHE
F1B: Mike Woolner, Brian Martin, Russell Peers - Reserve Peter Martin
F1C: Alan Jack, Stafford Screen, Neil Allen - No reserve

I think first time ever father and son on GB team !

CHE

Latest FFQ

This edition of FFQ has a wide range of articles. In the forefront of development,  Brian Eggleston describes his new family of F1B airfoils, of moderate curvature and thickness between 5 and 6.2 %. In calculated tests using the XFoil program, their power factor was found to even surpass the accepted standard, the Andriukov AA29 airfoil, that has ruled supreme for last 20 years or so. Some of these new airfoils are self-turbulated by reason of their geometry. More tests in wind tunnels and in the field will no doubt be made in the future, but, judging by the performance of the F1A foils developed previously by Eggleston, these new F1B profiles are an exciting development. Peter King considers in another article how to modify the variable pitch mechanism of the Andriukov F1B hub, by reducing the amount of pitch variation (it is always interesting to reflect on the greatness of Alex Andriukov as designer, developer and competitor in F1B category). King has found by his simulations that there may be advantages in reducing the nominal pitch variation and the method offered here admits of tuning for individual needs.

This year 2010, marks the 60th anniversary of the "Scram", that small and popular Open Rubber model created by Laurie Barr, and a sibling of the very similar Pinocchio. These  models that were published in Model Aircraft ( UK)  in 1949 and 1950. A contest was held last August at Middle Wallop, Hampshire, England to mark this event, with the presence of the designer. We publish here an account of the contest and a description of the model, adding, for the first time for Free Flight Quarterly, a full size plan of this model. We hope to continue this full-size plan feature in future issues.

The life and models of Chet Lanzo is celebrated in a biographical essay, split between this and the January 2011 issues, with some remarkable photos from the archive left by George Perryman, as well , of course, of many other sources.

Large Italian gliders around wartime were known for their beautiful lines, and the one included here must be one of the best: the "Astrale" of Ernesto Eikermann, from 1938, a model of 2.72 m span. The plan, while rather simplified, should hold no surprises for the competent builder of Vintage models.  On the other extreme, Joshua Finn presents his scale model of the Art Chester Goon racer, a Peanut Rubber scale model. The structure has been revised to incorporate very light yet stiff geodetic wing and stab and even a D/T mechanism to allow recovery for this high-performing model.

John Ralph ends his presentation of the Jetex engine history, with the last years of the original producers and the successors to Wilmot and Mansour. Some of the models specially designed for these motors are also described. Finally, Pierre Serres  tells of a rather surprising method for balancing single blade propellers, one that that seems to define logic, yet that worked well for him and his large and complex Coupe models.
As always, the cover and contents of the October 2010 Free Flight Quarterly issue are available in the new website : www.freeflightquarterly.com/wordpress/


Sergio Montes

F1A Flyoff Blues

I’ve got the flyoff blues.  It seems I can’t choose the right strategy.  There is nothing else quite like a flyoff in the towline glider events since there are so many possibilities and so much excitement in a short time.  With 10 minutes to get a flight off one can tow up immediately or wait for traffic to get out of the way.  A common strategy is to immediately tow and jockey with other flyers for optimum downwind position to launch under other models in marked lift while avoiding line tangles.  Another strategy is to move upwind to get away from the congestion and find another part of the field conducive to creating a thermal and hopefully far enough away to not give the rest of the flyers opportunity to piggy back.  This approach can also give the timer an advantage in viewing the model for the entire flight.

During the recent Sierra Cup I progressed to the 7 minute flyoff round and used the downwind strategy.  I towed in about the same area for the entire 10 minutes and never saw or felt air that seemed like it was good for 7 minutes and ended up dumping off the model in the last seconds for a poor flight.  The two smart guys that made the max had towed upwind or to other parts of the field and found good air which I never saw.  Hmmm…  So the next week at the Livotto contest I make it to the 7 minute round again.  After watching the F1C flyers launch without a thermal and with the Sierra Cup in my mind I’m thinking that waiting downwind for the big thermal may not be such a good idea.  So I tow straight upwind to find a spot to find some good air by myself.  Big mistake!  A few minutes into the round after I was well away from the crowd I look downwind to see all the other flyers launching high into what looked like good air.  It seemed like it was too late to run back downwind and chase them so I held my ground and continued to wait for something, and when I felt something better I launched with a couple minutes left but it turned out to be nothing and the model was quickly on the ground.  Everyone made the max but me!  So I’ve got the flyoff blues.

I’d be interested in hearing from other F1A flyers about how they choose their strategy for the flyoffs.  Any other approaches out there?  How do you go about assessing the field and conditions to develop an approach to the flyoffs?  I realize now that the best approach for me in both these cases would have been to stay downwind initially for the first 5 minutes in case there was a mass launch thermal, but then in the absence of this to start moving upwind during the last 5 minutes to search out something better and accelerate the thermal cycle.

-Ken Bauer

36TH. CALIFORNIA FAI INVITATIONAL

LOST HILLS, CA, USA

OCTOBER 9/10-2010

F1-A
 1 McKEEVR, M. 210 180 180 180 180 180 180 300 420 273 2283
 2 COOPER, J. 210 180 180 180 180 180 180 300 420 238 2248
 3 VAN NEST, B. 210 180 180 180 180 180 180 300 420 231 2241
 4 BESCVHASNY. V. 210 180 180 180 180 180 180 300 420 166 2176
 5 ZINK, D 210 180 180 180 180 180 180 300 420 157 2167
 6 BAUER, K. 210 180 180 180 180 180 180 300 117 1707
 7 DIEZ, H. 158 180 180 180 180 180 180 1238
 8 ALLNUTT, P. 197 180 180 125 180 180 180 1222
 9 BREEMAN, C. 196 166 180 180 138 180 180 1220
 10 LOGAN, T 193 180 180 118 180 180 180 1211
 11 SMITH, N. 209 180 167 153 180 180 79 1148
 12 LIMBERGER, M. 47 180 180 180 129 180 180 1076
 13 PARKER, J. 87 132 180 92 180 180 180 1031
 14 HINES, L. 210 105 135 0 450

F1-B
 1 MORRELL, R. 240 180 180 180 180 180 180 300 540 2160
 2 JENSENN, B. 240 180 180 180 180 180 180 300 284 1904
 3 SAKS, D. 240 180 180 180 180 180 165 1305
 4 BELFIELD, M. 240 180 180 180 180 180 162 1302
 5 RAYMOND, I 240 180 148 180 180 180 180 1288
 6 MALKHASYAN.S.(Jr) 223 180 180 180 147 180 180 1270
 7 SCHRORDTER, A. 240 180 180 180 180 180 110 1250
 8 SCHRORDTER, M. 240 35 180 180 180 180 135 1130
 9 ACHTERBERG, M. 240 180 68 488

F1-C
 1 HENNING, N. 240 180 180 180 180 180 180 254 1574
 2 SECOR, R. 240 180 180 180 180 180 180 253 1573
 3 ELLINGTON, J. 240 180 180 180 180 180 180 229 1549
 4 PULLEY, L. 240 180 180 180 157 937

F1-G
 1 JENSEN, B. 180 120 120 120 120 660
 2 SAKS, D. 147 120 120 120 193 610
 3 MALKHASYAN,S (Jr) 107 98 101 99 104 509





F1-H
 1 SMITH, N. 180 120 120 120 120 300 960
 2 VAN NEST, B. 180 120 120 120 120 192 852
 3 McKEEVER, M. 180 120 120 118 120 658
 4 COOPER, J. 157 120 120 120 120 637
 5 HINES, L. 180 120 93 120 120 633
 6 PARKER, J. 180 120 117 103 110 630
 7 LAVIS, D. 160 108 120 120 120 628

F1-J
 1 MALKHAYAN, T (Jr) 180 120 120 120 120 660

NOSTALGIA WAKEFIELD
 1 CROWE, B. 120 175 240 535
 2 KEPPLER, T. 79 180 240 499
 3 LIVOTTO, J. 120 180 121 421
 4 LAIRD, T. 120 180 120 420
 5 GILDERSLEEVE, R. 102 180 125 407

    CALIFORNIA F.A.I. INVITATIONAL HONOR LIST

               F1-A                   F1-B                   F1-C

 1 1975 B. ISAACSON       1975 B. WHITE          1975 R. YOUNG
 2 1976 B. ISAACSON       1976 L. DEWITT         1976 R. YOUNG
 3 1977 M. GEWAIN         1977 L. DEWITT         1977 E. CARROLL
 4 1978 L. HINES          1978 L. DEWITT         1978 D. GALBREATH
 5 1979 M. FANTHAM  (UK)  1979 A.HOTARD          1979 R. SIMPSON
 6 1980 M. GEWAIN         1980 H. SANDRONI       1980 D.C. SUGDEN  (CAN)
 7 1981 M. McKEEVER       1981 R. ROHRKE         1981 E. CARROLL
 8 1982 M. FANTHAM  (UK)  1982 B. TYMCHEK        1982 E. CARROLL
 9 1983 L. HINES          1983 B. PISERCHIO      1983 A. BISSONNETTE
10 1984 H. DIEZ           1984 R. ROHRKE         1984 R. SIMPSON
11 1985 M. GEWAIN         1985 B. PISERCHIO      1985 D. GALBREATH
12 1986 M. JOHNSON        1986 S. BEEBE          1986 D. JOYCE
13 1987 H. DIEZ           1987 D. ACKERY    (NZL)1987 D.C. SUGDEN  (CAN)
14 1988 M. GEWAIN         1988 L. KENDY          1988 J. HANNAH
15 1989 J. BRADLEY        1989 B. WHITE          1989 R. ARCHER
16 1990 V. STAMOV  (UKR)  1990 B. WHITE          1990 E. VERBITSKY   (UKR)
17 1991 H. DIEZ           1991 H. COLE           1991 R. ARCHER
18 1992 J. BRADLEY        1992 A. HOTARD         1992 R, COONEY
19 1993 J. PARKER         1993 Y. VIVCHAR   (UKR)1993 R, COONEY
20 1994 M. COWLEY         1994 W. GHIO           1994 R. VERBITSKY   (UKR)
21 1995 M. COWLEY         1995 M. ACHTERBERG     1995 R. ARCHER
22 1996 B. VAN NEST       1996 P. CROWLEY        1996 R. SIMPSON
23 1997 R. WEILER         1997 E. RYAN           1997 D.C. SUGDEN  (CAN)
24 1998 D. SINK           1998 A. BRUSH          1998 R. WATERMAN
25 1999 R. PUHAKKA        1999 A. BRUSH          1999 E. VERBITSKY   (UKR)
26 2000 B. VAN NEST       2000 J. SESSUMS        2000 K. HAPPERSETT
27 2001 B RYZ   (CZECK REP2001 A. ANDRIUKOV      2001 R. ARCHER
28 2002 M. COWLEY         2002 B. PISERCHIO      2002 E. VERBITSKY   (UKR)
29 2003 V. STAMOV  (UKR)  2003 W. GHIO           2003 E. VERBITSKY   (UKR)
30 2004 T. COUSSENS       2004 B. JENSEN         2004 B. GUTAI
31 2005 V. BESCHASNY (UKR)2005 A. ANDRIUKOV      2005 A. BABENKO   (UKR)
32 2006 R. LIMBERGER      2006 B. JENSEN         2006 A. BABENKO   (UKR)
33 2007 M. McKEEVER       2007 P. CROWLEY        2007 E. CARROLL
34 2008 K. KULMAKKO       2008 A. ANDRIUKOV      2008 A. BABENKO   (UKR)
35 2009 B, VAN NEST       2009 C. JONES          2009 D. CHESSON
36 2010 M. McKEEVER       2010 R. MORRELL        2010 N. HENNING    (DEN)

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