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.....OF THE HAVS ADVANTAGE ....EXPOSED ROTORS ARE A PROBLEM FOR ANY "MANNED" HELICOPTER PILOT.... NOTWITHSTANDING, THIS TRANSCENDS TO A MAJOR PROBLEM IN "UNMANNED" VTOL FLIGHT OPERATIONS..... ESPECIALLY IN BEYOND LINE OF SIGHT MANEUVERS WHILE CLOSE TO THE GROUND OR DURING LANDINGS....PLEASE KEEP IN MIND THAT THIS VIDEO IS OF A "MANNED" FLIGHT OPERATION…..

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 .....OF THE HAVS ADVANTAGE.....AND WHY EXPOSED ROTORS IN CONJUNCTION WITH GYROSCOPIC PRECESSION WILL BE A MAJOR PROBLEM IN "UNMANNED" TILT ROTOR FLIGHT OPERATIONS..... ESPECIALLY IN BEYOND LINE OF SIGHT MANEUVERS WHILE CLOSE TO THE GROUND OR DURING LANDINGS....PLEASE KEEP IN MIND THAT THIS VIDEO IS OF A "MANNED" TILT ROTOR FLIGHT OPERATION…..

 

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PLEASE NOTE THAT THE OFFICIAL PURPORTED CAUSES OF V-22 CRASHES HAVE BEEN ATTRIBUTED TO A PHENOMENON KNOWN AS “RING VORTEX STATE” WHICH IS ASSOCIATED WITH “LANDINGS” NOT TAKE OFFS. THIS VIDEO SUBSTANTIATES THE FACT THAT RING VORTEX STATE IS NOT THE CAUSE OF THIS V-22 CRASH AS IT IS TAKING OFF… NOT LANDING. REF. http://www.copters.com/pilot/powersettling.html

THE MOST LIKELY CAUSE GYROSCOPIC PRECESSION?

 

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 .....OF THE HAVS ADVANTAGE.....HERE WE SEE ANOTHER EXAMPLE OF THE DANGERS OF EXPOSED ROTORS IN VTOL AIRCRAFT FLIGHT OPERATIONS…..WHILE IT IS UNKNOWN IF ANY “UNMANNED” AIRCRAFT HAS PERFORMED ANY AERIAL REFUELING, NOTWITHSTANDING, IT WOULD BE HIGHLY UNLIKELY THAT ANY SUCH ATTEMPT WOULD BE SUCCESSFUL IN AN UNMANNED AIRCRAFT WITH EXPOSED ROTORS….  PLEASE KEEP IN MIND THAT THIS VIDEO IS OF A "MANNED" FLIGHT OPERATION…..

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CLICK HERE TO SEE SECOND VIDEO

  .....OF THE HAVS ADVANTAGE ... HELICOPTER TAIL ROTORS CONSUME UP TO 30% OF THE AIRCRAFT'S OWN POWER…. JUST FOR YAW CONTROL ... A LARGE PERCENTAGE OF HELICOPTER MISHAPS INVOLVES THE TAIL ROTOR ... HERE ARE TWO EXAMPLES OF THE DRAWBACK OF A NEED FOR A TAIL ROTOR IN HELICOPTER FLIGHT OPERATIONS ... PLEASE KEEP IN MIND THAT THESE VIDEOS ARE OF "MANNED" FLIGHT OPERATIONS…..

 

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 " ... rotor strikes against trees, power lines, and other obstructions are one of the most common causes of helicopter crashes, … “

Jeff Scott, Aerospace Engineer

aerospaceweb.org  January 23, 2005

 

 “The incidence of helicopter accidents has decreased, but lethality remains considerable. Rotor strikes are deadlier than crash-related injuries.”

 

Nelson J. M., Sawyer MA.

Department of Surgery, Uniformed Services University and Tripler Army Medical Center, Honolulu, HI 96858, USA. Dec 1995

 

The danger of rotor blade strikes is universally recognized.” … “ … rotor blade (and tail rotor blade) strike mishaps, along with airmen, have included bystanders, passengers, and children among the injured persons. Rotor strike mishaps differ from other aircraft mishaps in that they usually result in fatal or serious injury. “ … “The rotor is difficult to see when in operation, and the nonprofessional public is often not aware of its danger. Even personnel familiar with the danger of a turning rotor are likely to forget it.”

 

From an article titled: “Hazards of Rotating Helicopter Rotor Blades

From Dynamic Flight Inc. web site – dynamicflight.com

 

 

 

 

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... OF AN APACHE HELICOPTERS' NIGHT FLIGHT AND IT'S UNFORTUNATE DEMISE ...DUE IN PART TO EXPOSED ROTORS...

CLICK HERE TO SEE A SECOND VIDEO

... OF HOW EVEN SMALL TREE LIMBS CAN BE A SIGNIFICANT PROBLEM IN REMOTE, BEYOND LINE-OF-SIGHT VTOL UAV LAUNCH AND LANDINGS...

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  CLICK ON THE IMAGE BELOW AND SEE FOR YOURSELF

WHY EXPOSED ROTOR UAVS WILL ALWAYS BE MORE DANGEROUS

THAN A HAVS

EXPOSED ROTORS ARE JUST NOT SAFE ... EVEN IN MANNED OPERATIONS