"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 4339097 | Target seeking head for a missile A target seeking head mounted in the dome of a missile comprises a gyro rotor including a mid-portion forming a convex calotte-shaped peripheral surface. The convex calotte-shaped peripheral surface is surrounded substantially concentrically by a concave ... | 07/13/1982 |
| 4329579 | Target seeking device A target seeking device having a gyro rotor rotating about its axis with two degrees of freedom about a central point of rotation. The device includes a detector fixed with respect to the housing of the device, an optical system by which the field of view... | 05/11/1982 |
| 4294128 | Device for erecting and stabilizing a gyro vertical The invention relates to a device for erecting and stabilizing of a gyro vertical, comprising a disc arranged on the gyro housing and perpendicular to the gyro axis, said disc being driven in the same sense as the gyro rotor but at a reduced rate as compa... | 10/13/1981 |
| 4288050 | Steering device for missiles A target seeker on the missile looks at the hot spot behind the jet engine of the airplane to be intercepted and continuously produces signals representing, respectively, the rate of change of the distance between the two and the angular distance between ... | 09/08/1981 |
| 4283959 | External rotor gyroscope An external rotor comprises an annular case within which is the laminated stack forming the motor drive members and end members at each side of the stack. These are heat fitted together to form an annular blank which is then machined to form an axial bore... | 08/18/1981 |
| 4217754 | Apparatus for controlling the rotary speed in turbo-jet engines for aircraft A control device produces a control deviation signal representing the difference between the commanded engine speed and the actual engine speed. Before this signal is applied to a fuel control unit to establish the rate of fuel flow to the engine, its tim... | 08/19/1980 |
| 4171613 | Device for controlling the rotational speed of turbo-jet engines The commanded rotational speed is compared with the actual rotational speed to produce a deviation signal. This deviation signal is multiplied by a coefficient which is determined by state variables (speed and intake pressure) of the engine and a proporti... | 10/23/1979 |