Hardware and software requirements for the propulsion flight analysis computers
Hardware and software requirements for propulsion flight analysis computers
Thames, J. M., Jr.↗
SEARCH · Engineering Papers
Results for “HARDWARE”
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Cryogenic systems hardware technology review for the space shuttle
Hardware requirements for space shuttle cryogenic systems
Huzel, D. K.↗
The probability density function of a hardware performance parameter
Probability density function of hardware performance parameter and incentive contracting
Gilchriest, C. E.↗
A mathematical model of hardware and system testing
Hardware and system testing mathematical model assuming stochastic design and manufacturing defects detection and nondetection probability equations analogous to reliability function
Lind, M. M.↗
Environmental control system of Apollo spacecraft worked O.K. thanks to redesigned hardware
Apollo command and service modules environmental control system, discussing redesign of faulty hardware
Nicolello, H.↗
Low-thrust mission simulation - Feedback to hardware definition
Low thrust mission simulation dependence on hardware definition, discussing power plant characteristics, jet velocity and thrustor efficiency
Mascy, A. C.↗
System considerations of Apollo J mission hardware
Apollo J mission hardware modification for lunar exploration, describing systems engineering role
Perrine, C. H.↗
Recent developments and tests of integrated system hardware
Integrated Life Support System hardware tests, discussing oxygen and water recovery, contaminant control, personal accommodations and failure detection
Clark, L. G.↗
Memory reduction through higher level language hardware
Computer memory reduction through Fortran higher level language, discussing tradeoff between costs saved and additional logic hardware
Gellman, L.↗
Refurbishment and testing of orbiting primate experiment hardware for the study of extended weightlessness
The hardware for the technical feasibility demonstration models for weightlessness analysis was improved, and a 60-day test was conducted. The results are presented in detail.
Maine, R. B.↗
Improved guidance hardware study for the scout launch vehicle
A market survey and evaluation of inertial guidance systems (inertial measurement units and digital computers) were made. Comparisons were made to determine the candidate systems for use in the Scout launch vehicle. Error analyses were made using typical Scout trajectories. A reaction control system was sized for the fourth stage. The guidance hardware to Scout vehicle interface was listed.
Schappell, R. T.↗
Fabrication and test of eight sets of STRAP 3 flight hardware
The development and characteristics of the Stellar Tracking Rocket Attitude Positioning (STRAP) system are discussed. The objective of the program was to produce eight sets of reliable flight hardware at a cost that was compatible with the typical sounding rocket mission. The flight system consists of: (1) the attitude control system, (2) the pneumatics systems components, and a fine guidance error sensors star tracker. The performance of the system and the areas where improvements are needed are examined. Line drawings and circuit diagrams are presented to amplify the accomplishments of the project.
Greeb, M. E.↗
Shuttle mission simulator hardware conceptual design report
The detailed shuttle mission simulator hardware requirements are discussed. The conceptual design methods, or existing technology, whereby those requirements will be fulfilled are described. Information of a general nature on the total design problem plus specific details on how these requirements are to be satisfied are reported. The configuration of the simulator is described and the capabilities for various types of training are identified.
Burke, J. F.↗
Ground station hardware for the ATS-F millimeter wave experiment
The results are presented of a program to design, fabricate, test, and install a primary ATS-F millimeter wave ground receiving station. Propagation parameters at millimeter waves are discussed along with the objective of the overall experiment. A general description is given of the receiving system and its function in the experiment. Typical receiver characteristics are presented which show that the experiment is entirely feasible from a link SNR standpoint. The receiving system hardware designs are discussed with separate treatment given to the propagation and the radiometer receiver designs. The modification and relocation are described of an existing 15-ft antenna to meet the ATS-F requirements. The design of a dual frequency feed subsystem and self calibration equipment is included.
Duffield, T. L.↗
New hardware realizations of nonrecursive digital filters.
Analysis of the bit-level operations involved in the convolution realizing a nonrecursive digital filter leads to hardware designs of digital filters based on the operation of counting. Two distinct designs are outlined: the first one is capable of very high speed but is rather expensive; the second is quite slow but has the advantages of low cost and high flexibility. The basic designs considered utilize fixed-point representation for the data and filter coefficients. Variants allowing floating-point representation of the coefficients are also described.
Zohar, S.↗
Recent advancements in information extraction methodology and hardware for earth resources survey systems
The present work discusses some recent developments in preprocessing and extractive processing techniques and hardware and in user applications model development for earth resources survey systems. The Multivariate Interactive Digital Analysis System (MIDAS) is currently being developed, and is an attempt to solve the problem of real time multispectral data processing in an operational system. The main features and design philosophy of this system are described. Examples of wetlands mapping and land resource inventory are presented. A user model developed for predicting the yearly production of mallard ducks from remote sensing and ancillary data is described.
Erickson, J. D.↗
An optical/digital processor - Hardware and applications
A real-time two-dimensional hybrid processor consisting of a coherent optical system, an optical/digital interface, and a PDP-11/15 control minicomputer is described. The input electrical-to-optical transducer is an electron-beam addressed potassium dideuterium phosphate (KD2PO4) light valve. The requirements and hardware for the output optical-to-digital interface, which is constructed from modular computer building blocks, are presented. Initial experimental results demonstrating the operation of this hybrid processor in phased-array radar data processing, synthetic-aperture image correlation, and text correlation are included. The applications chosen emphasize the role of the interface in the analysis of data from an optical processor and possible extensions to the digital feedback control of an optical processor.
Casasent, D.↗
A description of hardware and mission planning for the Apollo-Soyuz Test Project
The Apollo-Soyuz Test Program (ASTP) is scheduled for flight in July 1975. This paper will describe briefly the mission planning and hardware associated with the program. Of interest are modifications to the basic Apollo and Soyuz vehicles as well as the newly developed docking module and docking system. Joint aspects of the mission profile are explained. Science objectives and corresponding experiments are described. Utilization of the ATS-6 Satellite for relay of TV, voice, and data to the ground is also a topic. The paper concludes with a discussion of the joint flight control interface.
Littleton, F. C.↗