Kellett XR-10
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18.05.2021 17:16

18.05.2021 15:02

Kaman K-16

17.05.2021 22:50

Bell Model 406 / OH-58D

17.05.2021 13:43

Mil Mi-17

14.05.2021 03:10

Kamov Ka-32

13.05.2021 01:46

Breguet-Richet Gyroplane No.1

12.05.2021 23:35

12.05.2021 22:43


12.05.2021 22:41

Bratukhin B-11

12.05.2021 20:49

Breguet-Dorand "Gyroplane Laboratoire"

12.05.2021 09:43

Sikorsky S-58 / HSS

10.05.2021 04:09

Revolution Helicopter Mini-500

09.05.2021 23:24

09.05.2021 22:58

09.05.2021 05:18

Bratukhin B-10

08.05.2021 13:32

06.05.2021 00:47

02.05.2021 01:05

RotorWay "Scorpion Too"

30.04.2021 13:10

Launoy & Bienvenu

27.04.2021 18:26

27.04.2021 11:17

26.04.2021 03:40

Curti Zefhir

25.04.2021 23:31

23.04.2021 19:48

23.04.2021 05:09

22.04.2021 15:11

21.04.2021 20:52

21.04.2021 20:51

Westland "Wideeye"

21.04.2021 11:10

Kaman H-43 "Huskie"

17.04.2021 09:37

tpxtozfdmn, e-mail, 12.11.2020 03:19

Muchas gracias. ?Como puedo iniciar sesion?

mike upton, e-mail, 21.12.2014 23:21

It looks like a nervous breakdown for a mechanic. And you'd neeneed a very trusting flight crew. Wonder if there is any vidvideo of this thing in flight

Sajesh, e-mail, 11.05.2013 07:54

Is there any project related to this active now?

Gordon, e-mail, 29.03.2013 10:01

Perhaps an USAA mechanic manual of years gone by would go a long eat in understanding the flight concept.....?

Tony Morris, e-mail, 20.01.2012 08:06

My father E.B. Morris was a Vice-President for Kellett in 1949 I was taken to the Kellett facility in North Wales Pennsylvania to observe the XH-10 under construction and testing. In addition my father worked with a Czech engineer he was able to bring to Philadelphia after he was liberated by U.S. troops at the end of WW II . His last name was Kadenecy - he was forced to work on V-2 rocket engines by the Germans.

Don, e-mail, 19.09.2010 03:39

Think of the rotors as a set of gears with only 3 teeth each,each tooth going between the other as it turns,,,,,simple,use card board and draw a 3 bladed rotor X2 and cut them out ,hold them in each hand (thumb & index fingers) and hold then close and at an angle as seen in the picture,now turn them like gears,The blades will miss the others and turn on its own axis......

silas dittmer, e-mail, 29.08.2010 06:38

I aggre with jozef about the diagram i just dont get it

H. Wessels, e-mail, 03.08.2009 22:44

The rotors were synchronized via a cross-drive between the upper transmissions. If one engine failed, the remaining engine drove its own transmission as well as the opposite one, via the cross-drive.

jozsef morrissey, e-mail, 13.03.2009 00:02

ok im confused in the pictures it appears that the blades intersect. i know on your page it says that the motors were synchronized but i would think that if they were to the extent that the blades were interwoven that would be a characteristic more emphasized but you also state that it could run on one motor witch would not work if the blades did cross for obvious reasons. so i guess i would like an explanation or maybe a diagram witch better depicts the structural design of this machine.

thank you for your time,

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