the teeni is the ideal formular for a home built plane and the nasa engineers were briliant in the analysis 10 g rating as the wing flexes perfectly idealy a plane hould have a aspect ratio of 6 and the engine should have a 2 to 1 weight to power ratio and be a four stroke engine for fuel eficiency an aerodynamic enough to cruise at three quarter throttle and sit in front with the prop hub at one chord width from the cg in front so maximum effectivenes for he verticle tail to over come the 'p' and 'k' factors and torgche of the engine should not exceed the ailerons effectiveness which happend on the p51 mustang and the elevator aera should be one sixth of the wing area and ideal wing loading is 10 lbs per square foot with a 50 mph stall and 100 mph cruise and the tail arm should be half the wing span from the cg and the verticle tail should be one twelth of the wing area half of the elevator area and the aspect ratio of one and the elevator aspect ratio of two or more or one third of the wing span across with the pilot sitting behind the cg so naturaly the heavier the pilot the further back he will be putting more pressue on the elevator so the pilot can instantly feel if he is over loaded and likely hood of a tail spin when stalling .the tail drager under carriage shoul be 15 degres ahead of the cg and 15 degrees behind on a try gear under carriage .thrust lines depend on wing position and wieght cg position and should be graft out so acceleration forces and swings of the plane are with in the elevators and verticle tails abiliy to correct under full power .ailerons should in total be one twelth of the wing aera and be one thrird allong from the out side inwards of the rear of each wing .the fuel tank idealy should be ahead of the cg above the pilots legs so when full the planes atttude is is not going to over come the elevators effectivenes and when empty also is not out side the elevators efeectivness and naturaly in line with the planes attitude for forward vision maximum .it is the final trim moments that realy matter on aircraft as stability is effected so limits are plaCED ON RPM FOR VIBRATION DESTRUCTIVENSS AND EVERY MEASUREMENT PLUS AND MINUS SO IF THE PLANE LOOSES CONTROL IT CAN BE ASSESED BACK TO THE PROBLEM .
Posted on Feb 17, 2008, 5:43 AM from IP address 202.46.138.88