Radio Controlled Soaring Digest April 2004 Issue
Issue Contents:
The Golden State XC race is sponsored by South Bay Soaring Society. It isa 50K course. LSF tasks are being logged for levels 3 4 5.
The 2004 (11th Annual) International HLG Festival announcement for PowayFlight Center. 3 age classes – Jr Open and Eagle (55+) 10 rounds.
Equations for actual lift of a wing and rotational moment. Pitching moment of a semi-symmetrical wing is negative and constant over the usable angle of attack range. Aircraft moments are defined and discussed. Drag contributes to the moment if it is above or below the CG. The wing lift horiz. stab produce moments multiplied by the moment arm (CG-aC of each) All 3 sources must balance for the aircraft to be stable in pitch. A specific elevator trim balances aircraft pitching moment at one airspeed. A more rearward CG causes the model to be sensitive to trim.
An explanation of how and why camber &/or flaps are used on launch. Howto find sweet spot for tow hook position. Hot to launch into down wind airuse low camber at release. Very good summary at end
Pt 2 of series. Mini Graphite imported by Kennedy Composites and built byVladimirs Models (Ukraine) Fit Finish are excellent with CF Kevlar used generously. Wt is 44 oz. with X-tail slightly lower w/ V-tail. MH32 AF. Tx mixing ratios are given for flaps elevator and ailerons to rudder. V-tail throw of +/- .25″ Dave raves about the models capability.
Q&A from Mark on decolage for wings and stabs. Tail -2 deg wing -1Flaps should also affected best decolage.
Sloper Headgear; means of keeping hat on including friction AOA Duct TapeChin Strap. Styles vary from Yuppie to Ski Bum to Sherlock Holes.
Comments on short take off vertical landing harrier jet. BAeW P103 is nowmerged with Eurofighter a canard design. Would make an interesting PSS.
RCSD Goes on the Internet with this April issue and suspends mailed copiesList of supporters and consultants behind the decision is shown.
ACE Easy Eagle full house 2M balsa model is shown on cover.
Radio Controlled Soaring Digest April 2004 Issue
