![]() ![]() G-LYNX fastest helicopter, Photo by Mark Van der vliet Eventually, it gets into what is known as a ‘retreating blade stall.’ This situation limits the top speed of a helicopter, and very little can be done about it. This is quite complicated, but basically, the problem of high-speed helicopters is that the retreating blade has less and less airspeed as the helicopter speeds up. ![]() And the theoretical top speed for a rotary-winged aircraft is only about 225 kts. Indeed, the world record speed for a helicopter is a mere 217.5 kts, set at a European air show on August 6th, 1986, by a slightly modified version of the ZB500 G-Lynx, manufactured by GKN Westland Helicopters. One thing helicopters just cannot do fly fast. If we’re talking about airliner-type speeds of Mach 1 or thereabouts, a really fast helicopter is an impossibility. Read More: What is the Contribution of Tail rotor on Helicopter? Augusta A109 helicopter photo by Mercy Healthįirstly, let’s get one thing straight. ![]() So is this the direction in which things are developing? And, more importantly, is this the way they should go? Similar developments have taken place in other recent rotary aircraft. For instance, the Agusta Grand, the current version of the A109, has a cabin that has been lengthened so that in the VIP version, you can have six seats in the back, or four seats and a drinks cabinet if you prefer. Other than the climbing around the aircraft it probably took me longer to type that than to actually do it for a preflight.Indeed, some of the developments in more recent helicopters suggest that this might be the way things are going. You follow up the mast to the control rods attaching from the swash plate to the rotor blades themselves. You follow them from the cyclic and collective through the cabin, up the mast, through the mixer arms, and to the swash plate. When you check control rod integrity you know what they do. The items on the checklist are really not that hard when you understand the function of the parts you are checking. Had I worked less and flown more it probably would have taken half of that for me to get comfortable doing the preflight myself. Going 1-2 months between lessons is very bad for retaining new information. First you watch them do the inspection, then you do it under supervision, then they watch you from a distance, then the instructor finishes up whatever they are working on last while you preflight it solo (with the best instructors doing the preflight themselves before you even start).Ģ) How long does it take? For the Schweizer it took me probably the first 10-12 lessons since I was initially not able to fly frequently enough to remember most of what I learned the last lesson and I was working 80+ hours per week at the time. to make sure that it is potentially airworthy in the first place. Legally speaking, that is after touching the log books/ registration/ weight and balance/ etc. During each lesson the first part of touching the aircraft should be the preflight. I can answer specifically about the Schweizer (Sikorski) 300C/ CB/ CBi helicopter.ġ) How does one learn the preflight? From your instructor. I have never flown the R-22 but I am rated in RH and ASEL. ![]()
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