COMO LANÇAR UM AEROMODELO VCC.
Está em inglês, mas alguém que tiver disponibilidade para traduzir e colocar no fórum,acho que seria bem interessante.
#1. "RE: Launching"
In response to Reply # 0
Mon May-23-11 01:45 AM by Cowboystunt1
Can someone give a step by step tutorial on the correct way
>to launch an airplane? On its own wheels in a stunt contest
>on pavement to be more exact. Thanks.
I'll take a shot at this. I've launched a lot of planes in contests and never had any complaints.
That's not to make light of the task because it's very important and can make or break a few points on the take off...or cause a hair raising experience under the worst consequences.
1. If you haven't launched this particular plane before ask the pilot how he wants it pointed. He should be responsible for stepping left or right a little to get the wing aligned the way he wants it to the lines. Most stunters will swing slightly to the outside when launched because of the tip weight and the moment of inertia it creates with the CG. If it's already pointed slightly out this is less noticible.
2. Hold the airplane firmly during the starting proceedure and while the pilot is running out the lines on the way to the center of the circle...he could snag the lines (not likely but it can have very drastic results if it happens and you don't have a firm grip on the plane.
3. When the pilot reaches the center and has the handle in ready position glance quickly over the plane and make sure everything is normal...especially take a glance at the leadout clips and make sure they are not tangled or a leadout is not twisted in the end of the clip and foreshortened. This can give a surprise to the pilot if it suddenly straightens itself out during the take off. If anything is wrong don't launch until it's corrected. Oh yeah, make dead sure the battery is disconnected and out of the way. Stunters really fly lousy with a battery in tow...Yes I've seen it happen more than once!
4. When ready to launch you should be holding the airplane at the wing root next to the fuselage with the right hand on the outside of the fuselage and the left hand against the stab and along the inside of the fuselage...not gripping the fuselage and being very careful NOT to apply any downward pressure to the tail wheel...it will act as a spring and could dump the prop tip into the pavement when released if compressed.
5. Watch the pilot carefully and when he (or she as the case may be) signals look forward of the airplane to insure there's nothing in the path of the plane and release the airplane quickly but smoothly and exactly simultaneously with both hands. DO NOT Help the airplane by pushing or applying any force into the airframe. Do not drag your hands over the wing or stab...let the airplane and engine do all the work...you are after all only a stooge!!!
6. Get up quickly and remove any paraphenalia (batteries etc) from the circle and get the heck out of the way. I like to have the launcher move immediately to the outside of the circle and stand erect to give a reference for the end of the takeoff lap and a visible altitude indication (approximately shoulder height/ 5 ft) to establish level flight, but this is a personal preference.
7 one thing is worth mentioning and that is if the airplane is started inverted (you will both be standing and holding the airplane) and then turned over make sure both you and the pilot are clear on who turns what over and precisely when. Take nothing for granted, A prop in the face will spoil your whole day. Most common is to have the pilot start the engine then remove the battery clip and step back and point up when he's ready and then (and only then) the launcher rotates the airplane to a verticle position and stops. The pilot then takes hold of the airplane and nods and the launcher steps away while the pilot rotates the airplane into a normal launching position at which time the launcher kneels and takes a firm hold of the plane and indicates to the pilot with a nod that he has control. After this type of start it's very important to make sure the lines are not tangled or snagged...the piolt will likely check this but take nothing for granted!
Whew...and I thought that was all easy!
I'm sure others will have things to add but this covers all the basics...I think?
Randy Cuberly