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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 595 records · Page 33

All sources NASA NTRS DOE OSTI

NASA NTRS1962

ADVANCED CONTROL TECHNIQUES FOR SOLUTION OF STRUCTURAL BENDING AND ELASTIC FEEDBACK PROBLEMS OF LARGE, FLEXIBLE BOOSTERS

Control techniques for the solution of structural bending and elastic feedback of flexible boosters

STRUCTURAL RIGIDITY↗

NASA NTRS1963

The fm demodulator with negative feedback

This paper describes the design and theory of operation of the wideband FM demodulator with feedback (FMFB receiver) used at the Andover, Maine, earth station for Telstar satellite communications tests. Performance data for the FMFB receiver indicate a clear advantage over the conventional FM receiver in many cases. The principal advantage lies in the ability of the FMFB receiver to raise the threshold at which “breaking” occurs for TV and other wideband signals.

TELSTAR SATELLITE↗

NASA NTRS1965

Feedback oscillator functions as low-level pulse stretcher

Low trigger pulses of the pulse stretcher circuit are obtained by forward biasing the transistor oscillator. The loop gain is kept below unity and prevents free-running oscillation. Two parallel feedback loops improve the stretching capabilities.

Source record↗

NASA NTRS1965

Electrostatically driven dynamic capacitor employs capacitive feedback

Three-part signal electrode provides capacitive feedback to an oscillator driven dynamic capacitor in an electrometer circuit.

Lonborg, J. O.↗

NASA NTRS1964

The role of feedback in adaptive perceptual processes

Correlation between stimulus and response sequences derived from observer performance and feedback information - signal to noise ratio

SIGNAL TO NOISE RATIO↗

NASA NTRS1964

Feedback stabilized seismometers.

Amplitude and phase response of pendulum seismometer stabilized by negative feedback

SEISMOMETER↗

NASA NTRS1964

Analysis of an incremental digital positioning servosystem with digital rate feedback.

Pulse rate measurement by incremental digital positioning servosystem with digital rate feedback

PULSE RATE↗

NASA NTRS1965

A feedback shift-register scaler.

Scaler using ferrite-core shift register with linear-logic feedback developed for spacecraft computer clock

ERROR CORRECTING DEVICE↗

NASA NTRS1966

Ignition of an evaporating fuel in a hot oxidizing gas, including the effect of heat feedback.

Ignition analysis of condensed phase fuel suddenly exposed to stationary hot oxidizing gas, noting strong pressure effect due to feedback mechanism

PRESSURE EFFECT↗

NASA NTRS1966

A coding scheme for additive noise channels with feedback. I - No bandwidth constraint.

Coding scheme using noiseless feedback link to improve communication over noisy forward link, assuming no bandwidth constraint

SEQUENTIAL DETECTION↗

NASA NTRS1966

A coding scheme for additive noise channels with feedback. II - Band-limited signals.

Coding scheme using noiseless feedback link to improve communication over noisy forward link, assuming band-limited signals

RANDOM PROCESS↗

NASA NTRS1967

Negative feedback system reduces pump oscillations

External negative feedback system counteracts low frequency oscillations in rocket engine propellant pumps. The system uses a control piston to sense pump discharge fluid on one side and a gas pocket on the other.

Rosenmann, W.↗

NASA NTRS1967