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    Tip Rocket Pre-Rotation

    Hi Wayne, The ROR project was interesting, but it is not unique to use rotor tip rockets on helicopters. The concept was developed by Gilbert Magill already in the 1950:ies Pinwheel Rocket Helicopter - YouTube What is unique with our project though is that Clark has used tip rocket assisted...
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    Tip Rocket Pre-Rotation

    Installing a pressurized fuel tank, April 2012 Installing a pressurized fuel tank, April 2012 Hi Group! Clark liked the system from summer of 2011 with an atmospheric tank and a pump, but it was not powerful enough to make a perfect VTO as long as the pump was driven by the cordless Dewalt...
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    Tip Rocket Pre-Rotation

    Everything is possible, Karl
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    Tip Rocket Pre-Rotation

    Hi Arnie, I was also convinced the tip rockets should work without a high fuel feed pressure thanks to the centrifugal force at rotation. I even built a low pressure system: www.peroxidepropulsion.com/article/31 but it was never efficient enough for VTO. I had to increase the pressure in the...
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    Tip Rocket Pre-Rotation

    Hi Paul, I understand your position, but the question is what is POSSIBLE to do with the tip rockets while in the air. (Even if I understand you would not go for it...) I wrote an article on my website were I describe my visions in more detail; www.peroxidepropulsion.com/article/27 Hi André, It...
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    Tip Rocket Pre-Rotation

    Using the tip rockets while in the air. Using the tip rockets while in the air. Clark sent me a new video. He is taking off from the backyard of a house again. I notice that he uses the rockets during 7 - 8 seconds also AFTER lift off, and I think i notice that this is increasing his climb...
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    Hello André, I just accepted your friend invitation. It will be interesting to discuss tip...

    Hello André, I just accepted your friend invitation. It will be interesting to discuss tip jets/tip rockets! Erik
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    Tip Rocket Pre-Rotation

    One more TO One more TO A take-off movie a day keeps the doctor away! Imagine, this could be your own backyard -no airfield needed. Escape the traffic jams! Clark VTO 3, Aug 2011 - YouTube
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    Tip Rocket Pre-Rotation

    Clark´s 2:nd VTO movie Clark´s 2:nd VTO movie Hi Clark! I am glad you finally joined this group. Welcome! To show the guys in the group what you can do with a cordless Dewalt, I enclose the video you sent me this morning. (shot by your daughter Debbie) I was proud to see you have my logo on...
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    Tip Rocket Pre-Rotation

    Answer: Thank you! We should all be thankfull to Clark! No one new exactly how it would work before he tested. There was talk about "dirty air" and other risks. Some "experts" were convinced he would crash.
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    Tip Rocket Pre-Rotation

    Gyrocopter VTO with HP rotor tip rockets Gyrocopter VTO with HP rotor tip rockets Clark managed to get a nice VTO on film. Here it is: Clark Gyrocopter VTO 08-21-2011 - YouTube I feel the system is now developed and tested to a point one could look into manufacturing of it and offer complete...
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    Tip Rocket Pre-Rotation

    Hi JR I am glad you liked the tip rockets even if there was no perfect TO this time. Luckely enough it works well some times, so it should be fixable. Clark wrote me a mail saying: "Every time i do this I learn more. I flew it again this morning at mentone after almost everyone left and...
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    Tip Rocket Pre-Rotation

    Arne, You are probably right! Clark has noticed that after having stoped the fuel flow a short time and than starting the flow again, the shaking starts. Maybe air is suctioning in to the fuel lines at these occations making the two blade becoming different in weight. PS Please anyone visiting...
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    Tip Rocket Pre-Rotation

    I was in telephone contact with Clark. He is in Mentone and he has made 3 take-offs up to now. The only one that was nice was the first one. The stick shaking came back on the other two -he is not sure why. If someone got the first take off on film (at around 9 am on Friday), it would be real...
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    Tip Rocket Pre-Rotation

    Thank you Stan. I cross my fingers Clark will be able to demonstrate some nice VTO:s at Mentone, His plan is to go there tomorrow, Thursday.
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    Tip Rocket Pre-Rotation

    Clark did a couple of true VTOs on July 30 with the tip rockets! He said they felt quite controlled and there was no stick shaking this time. It is history making! Clark told me he is controlling the propeller engine throttle with a motorcycle handle on the stick with his right hand and the...
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    Tip Rocket Pre-Rotation

    Clark did a couple of true VTOs on July 30 with the tip rockets! He said they felt quite controlled and there was no stick shaking this time. It is history making! It is a pitty the toke-offs were not filmed this time.
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    Tip Rocket Pre-Rotation

    Clark will probably go to Mentone with his machine, if you want to have a look on the rotor tip rockets. He is planing to be there Thursday thru Saturday. August 4 thru 6. I will try to come to Mentone myself, but I am not sure if I can make it yet. Clark has got questions because people have...
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    Tip Rocket Pre-Rotation

    Hi Vance, Clark said he used almost a gallon of fuel = about 10 lbs. He said he will need less once he is more experienced I dont sell peroxide any longer, but when I did I used to charge USD 3.30/lb for this quality. Its not very cheap, so one should not use the rockets unless it is absolutely...
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    Tip Rocket Pre-Rotation

    Hi, I started this thread already year 2004! This is how long I have been working with hydrogen peroxide rotor tip rockets for autogyros. I am now proud to anounce that my friend Clark Cogan, Franklin, Indiana, made the first ever ultra short take-off with my HP rockets on his KB2 gyrocopter...
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