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NASA - National Aeronautics and Space Administration (NASA): Recent submissions
Now showing items 561-580 of 3613
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NACA-TM-1292
Abstract: An experimental investigation is made of the turbulent flow of water in pipes with various degrees of relative roughness. The pipes range in size from 25 to 100 millimeters in diameter and from 1800 to 7050 millimeters in ... -
NASA-LLIS-5188
Abstract: Not using a ground station for primary direct communications between the Tracking and Data Relay Satellite System (TDRSS) and the Constellation vehicle resulted in various communications problems. Using a ground station ... -
NASA-LLIS-1139
Abstract: Description of Driving Event:
Higher Shuttle Flight Rates Driving Higher Workloads.Subject(s) : Administration/Organization , Aerospace Safety Advisory Panel , Human Resources & Education , Policy & Planning , -
NASA-LLIS-2816
Abstract: Abstract:
On 24 April 1990, the launch of the Hubble Space Telescope, STS-31R, was held at T-31 seconds because the Main Propulsion System (MPS) liquid oxygen (LOX) outboard fill and drain valve (PV9) ...Subject(s) : Ground processing and manifesting , Ground support systems , Launch support systems , Planning of requirements verification processes , -
NASA-LLIS-0820
Abstract: Practice:
Use of the Global Positioning System (GPS) to provide a timing system with improved reliability and accuracy over the previous system. -
NASA-LLIS-0030
Abstract: Description of Driving Event:
During installation of the orbiter GN2 tanks, the H70-0649 lifting adapter is used to raise the GN2 tank from the orbiter processing facility floor to the orbiter payload ...Subject(s) : Flight Equipment , Ground Equipment , Ground Operations , Hardware , Industrial Operations , Launch Vehicle , Lifting Devices , Pressure Vessels , -
NACA-TN-1525
Abstract: Present designs of aircraft fro transonic speeds call for wings with large angles of sweep. In order to study the structural problems encountered in the design of swept wings a 45 degrees swept box beam, shown in figures ...Subject(s) : BEAMS , BOX - BENDING & TORSION , BEAMS , BOX - STRESSES , BEAMS , CANTILEVER - STRESSES , LOADS - BEAMS , BOX , STRESSED SKIN - BEAMS BOX , WING SPARS - DEFLECTION , WING SPARS , BOX - BENDING & TORSION , WING , SWEPTBACK , -
NACA-TR-521
Abstract: This report presents a discussion of longitudinal stability in gliding flight together with a series of charts with which the stability characteristics of any airplane may be readily estimated. -
NASA-LLIS-0962
Abstract: Description of Driving Event:
Fuel or oxidizer starvation will cause hazardous conditions due to off-nominal mixture ratios in liquid propellant rocket engines. A safe and repeatable start sequence was ...Subject(s) : Configuration Management , Cryogenic Systems , Ground Equipment , Hardware , Launch Vehicle , Parts Materials & Processes , Safety & Mission Assurance , Spacecraft , Test Article , Test Facility , -
NASA-HDBK-8739.18
Abstract: Purpose
This document provides guidance for managing the complete life cycles of problems, nonconformances, and anomalies. Program and project managers are the primary audience.
This handbook is ... -
NASA-LLIS-6776
Abstract: Description of Driving Event:
On August 26, 2011, a fire suppression sprinkler head leaked and then failed in Building 600 at the NASA/Caltech Jet Propulsion Laboratory (JPL), inundating several office ... -
NASA-LLIS-0618
Abstract: Description of Driving Event:
A bulging 55-gallon drum of paint wastes from Cape Canaveral Air Station, which had been overpacked into an 85-gallon salvage drum, ruptured while in storage at an offsite ...Subject(s) : Hazardous/Toxic Waste/Materials , -
NASA-LLIS-1420
Abstract: Abstract:
The success of a project is greatly impacted by the visibility and advocacy within the NASA community, stakeholders, customers, and end users. In addition, an ambiguous project scope can lead ...Subject(s) : cost creep , full-cost accounting , Policy & Planning , Program and Project Management , Project cancellation , project visibility and advocacy , requirements , Safety & Mission Assurance , scope , stakeholders , -
NASA-TM-72863
Abstract: Lateral-directional and longitudinal stability and control derivatives were determined from flight data by using a maximum likelihood estimator for the Beech 99 airplane. Data were obtained with the aircraft in the cruise ...Subject(s) : AERODYNAMIC , AIRCRAFT , BEECH , CONFIGURATIONS , CONTROL , DATA , DERIVATIVES , DIRECTIONAL , ESTIMATES , FLIGHT , LATERAL , LIKELIHOOD , LONGITUDINAL , MAXIMUM , PREDICTIONS , STABILITY , TABLES , TESTS , -
NACA-RM-L57B07
Abstract: INTRODUCTION
The growing complexity of modern aircraft with much electronic equipment which requires air for cooling, increased requirements for cabin or cockpit ventilation, problems of matching engine and inlet airflow ... -
NASA-LLIS-0152
Abstract: Description of Driving Event:
The RCS primary thruster throat ferry flight plug assembly is used to prevent moisture intrusion during the orbiter's ferry operations. This assembly is installed after ...Subject(s) : Hardware , Parts Materials & Processes , -
NASA-LLIS-1175
Abstract: Description of Driving Event:
Delays in Drafting and Implementing Computer System Security Plans and Training Especially for System Administrators.Subject(s) : Administration/Organization , Aerospace Safety Advisory Panel , Communication Systems , Computers , Configuration Management , Human Resources & Education , Information Technology/Systems , Policy & Planning , Risk Management/Assessment , Security , Software , Test & Verification , -
NASA-LLIS-6150
Abstract: Passive pressure relief features can not adequately control the concentration of leaking gas. -
NASA NPD 1370.1
Abstract: This NASA Policy Directive (NPD) provides general policy direction and identifies principles to be considered by NASA officials in:
(1) undertaking reimbursable use of NASA facilities by, or for the benefit of, foreign ...