The air bearing surface of an air bearing slider is configured with a taper formed at the slider leading end and a rail that is formed with a base and two legs. One leg extends from the base partially toward the trailing end. The other leg extends from the base to the trailing end and is integrally formed of a rectangularly shaped section and one or more polygon-shaped sections. Inner and outer recesses are defined and separated by the rail, such that the slider is effectively insensitive to cha...

A device for load detection with altitude adaptation is described, wherein the load is determined based on an altitude-dependent main load signal and a collateral load signal not dependent on the altitude. In connection with defined driving conditions it is possible to detect an altitude deviation by comparison of the main load signal with the collateral load signal. The result of the comparison is integrated in an integrator with a variable time constant to form an adaptation factor, by means o...

A non-rotating sphere is floated on a spherical air film. Provision is made for a double pneumatic integration of the vertical component of acceleration to indicate the desired missile arming altitude. A control output signal is then generated at the predetermined altitude and used to arm the missile or otherwise control it in its operation.

System for sampling and holding an analog signal corresponding to the altitude of an aircraft and providing a control signal for maintaining the aircraft at the altitude where sampling occurs. A binary converter stores a count corresponding to the level of the sampled signal, and a digital-to-analog counter provides an output analog signal corresponding to the count registered by the counter. The altitude signal is compared with the output signal to provide an altitude correction signal in the e...

An airborne altimeter system indicates the instant when a descending craft equipped with that system reaches a predetermined operating altitude. A transceiver aboard the craft emits a continuous high-frequency sine wave toward the ground and isolates a low-frequency Doppler component from an incoming reflected wave due to ground echoes. The Doppler component is peak-detected and the resulting envelope signal is fed to two passive impedance networks having different transfer functions so that the...

A friction igniter assembly for high altitude operation having a pull wire oated with a scratch sensitive composition which is moved through a chlorate composition. The scratch sensitive composition containing red phosphorus reacts with the chlorate to provide a flash which transfers ignition to an adjacent boron-lead dioxide composition. The boron-lead dioxide composition is the main igniting charge and provides an intense output of heat in a very short time for igniting a pyrotechnic compositi...

A carburetor has a choke system including a bimetallic spring that biases the choke valve closed with a force that increases with decrease in temperature. A hot air tube connected from an exhaust manifold heat stove to the intake manifold flows hot air past the spring to warm it as the engine warms. An electrical heater is activated above a predetermined temperature to provide supplemental heat to the spring to pull off the choke faster than by use of the hot air alone. A further manifold vacuum...

An aircraft instrumentation having inherent self-checking features. Radar and barometric altitude information are displayed on the dial face of a single instrument. A cooperating dial and first pointer displays barometric altitude. A manually settable indicator "bug" cooperates with the dial to provide a presentation of the height of the airstrip relative to sea level. A second indicator "bug" of a different shape from the landing field bug is servo-driven from both radar and barometric altitude...

An altitude control system operating on a rate command principle employs an uncorrected primary altitude sensor in a servo loop which, in the absence of command operation, synchronizes the positioning of the sensor zero adjust mechanism with the experienced aircraft altitude rate. Rate command modes establish rate command inputs to the sensor servo loop while removing the synchronizing mode position feedback and initiate aircraft vertical control in response to sensor output signal. A corrected ...

An indication of altitude variation about a preselected altitude is provided from a real-time altitude digital code information input signal in response to an altitude alert control signal which is proportional to a first pair of complementary sinusoidal functions of the altitude variation. A second pair of complementary sinusoidal functions of altitude is provided from the altitude digital input signal. The first pair of sinusoidal functions is a function of the second pair of sinusoidal functi...