A device for signaling critical altitude of a flight vehicle above a landing surface formed of a high intensity light source; an optical system for reflecting the light beam downwardly towards the landing surface; a pair of optical systems for receiving images of the illumination produced by the beam; a light-responsive electrical system for generating a usable voltage signal when the vehicle is at the critical altitude.

An altitude reporter comprising an altimeter, electro-optical means for tracking the position of the indicator of the altimeter, an encoder for registering the position of the indicator and providing pulse group series output corresponding to such a position, and means for operatively connecting the encoder to the electro-optical tracking means. This connecting means is effective, when the indicator moves in one direction, to operate the encoder to add increments of such movement and, when the i...

An altitude compensation device for automobile engines or the like having a bellows adapted to detect the altitude and a plurality of valve mechanisms adapted to be actuated by the expansion or contraction of the bellows to adjust respective compensation air. The device has a disc mounted in the body of the device for free up and downward movement keeping a horizontal posture. The disc is carried by the bellows making a point contact with the central portion of the upper face of the bellows, so ...

An altitude difference measuring apparatus for measuring the difference between the altitudes at a first and second points on the basis of the barometric difference between the points, having an air pressure holding section with an electromagnetic valve for hermetrically containing an amount of air. At the first place an amount of the ambient air is held hermetrically in the air pressure holding section, and at the second place the barometric difference between the air pressure in the air pressu...

A blower motor providing vacuum as, for example, for a magnetic tape handler, is programmed to provide a constant vacuum in an environment of changing altitudes. The blower motor is controlled by a pressure transducer which speeds up the motor as the altitude is increased and slows down the motor as the altitude is decreased.

An altitude compensating device for carburetors has an air metering valve in fluid communication with the fuel passage of the carburetor and a pressure-sensitive bellows adapted to drivingly control the air metering valve such that the flow rate of the compensating air is increased as the altitude increases. A closed control air chamber is defined at the upstream side of the air metering valve. Venturi vacuum around the venturi portion of the intake passage of the carburetor and air are introduc...

An altitude compensation ignition system for compensating ignition timing of an internal combustion engine depending upon variations in altitude or atmospheric pressure comprises pressure sensitive compensation means consisting of a bellows whose ends are fixed to a distributor and a vacuum advance device and adapted to be elongated and shortened in response to variations in atmospheric pressure. When the atmospheric pressure is lowered, the bellows is elongated to move a contact point relative ...

The medical altitude chamber is constituted by a pressuretight therapeutic chamber communicating with a source of a gas medium under pressure. It also incorporates apparatus for moistening the gas medium in the therapeutic chamber, said apparatus comprising a liquid reservoir whose lower part communicates through an adjustable throttle with the internal space of the jet pump nozzle, and a pressure regulator which has an inlet for communication with the source of the gas medium, a setting inlet f...

An atmospheric pressure responsive and vacuum actuated control valve applied to a fluid control system for maintaining the same absolute ratio of air rate by fuel rate in a combustible mixture in an intake manifold of a vehicle engine regardless of whether the vehicle engine is moved to higher altitudes. The valve has a succesive changing ability of a superimposed corrective quantity of air on the intake manifold in accordance with the altitude of the engine.

A compound aerostat employing a primary lifting mixture of helium and methanol in a first enclosure and a secondary lifting mixture of ammonia in a second enclosure. Both enclosures are contained within a single envelope. The methanol in the primary enclosure gradually condenses out as the altitude increases yielding a decreasing lift with altitude up to the stratosphere to provide passive altitude stability to the system. An absorbent, metallic lithium is provided within a separate container an...