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NASA - National Aeronautics and Space Administration (NASA): Recent submissions
Now showing items 581-600 of 3613
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NASA-LLIS-0706
Abstract: Practice:
This reliability practice provides a read out of magnetic field exposures which could adversely affect the magnetic cleanliness of the spacecraft. When transporting a spacecraft or flight ... -
NACA-TR-933
Abstract: Performance characteristics of conical jet nozzles were determined in an investigation covering a range of pressure ratios from 1.0 to 2.8, cone half-angles from 5 degrees to 90 degrees, and outlet-inlet diameter ratios ...Subject(s) : ANALYSIS , COEFFICIENTS , CONICAL , CONVERSION , CRITICAL , DIAMETERS , ENERGY , EXHAUST , FLOW , JET , MATHEMATICS , NOZZLE , NOZZLES , PERFORMANCE , PRESSURE , RATIO , VELOCITY , -
NASA-LLIS-0001
Abstract: Description of Driving Event:
During prelaunch check out of shuttle orbiter OV-104 for flight STS-36, the AC2 buss phase a voltage fluctuated between 112 and 122V for one minute. The inverter supplying ...Subject(s) : Configuration Management , Flight Equipment , Hardware , -
NASA-LLIS-0936
Abstract: Description of Driving Event:
During the Procurement and Fabrication of the MPLM Support Vehicle, a specification was written for the truck tractor portion of the vehicle. An industry term Gross Combined ...Subject(s) : Ground Equipment , Transportation , -
NACA-TN-4044
Abstract: Wind-tunnel tests were conducted to determine the ground effects on a tailless model with a wing of aspect ratio 2 and infinite taper, and on a tailed model with a triangular wing of aspect ratio 3, with flaps. Control-surface ...Subject(s) : AIRPLANES , COMBINATIONS , COMPLETE , CONTROL , CONTROLS , EDGE , FLAP , FLAPS , FUSELAGE , HINGE , LONGITUDINAL , MOMENTS , STABILITY , STATIC , TAIL , TRAILING , TYPE , WING , WINGS , -
NASA-CR-845
Abstract: Calculation method for wind tunnel wall interference velocities for tunnels of arbitrary cross section.Subject(s) : AERODYNAMIC INTERFERENCE , INTERFERENCE , V/STOL AIRCRAFT , VELOCITY , WALL FLOW , WIND TUNNEL WALL , WIND TUNNEL WALLS , -
NASA NPD 5101.1 REV E W/CHG 1
Abstract: APPLICABILITY. This NPD is applicable to NASA Headquarters and NASA Centers, including Component Facilities. -
NASA-LLIS-0533
Abstract: Abstract:
Planned NASA missions will require rapid design and development techniques to reduce costs and shorten schedule times. Mars Global Surveyor represented a transitional project that provided ...Subject(s) : Administration/Organization , Policy & Planning , Safety & Mission Assurance , -
NASA-LLIS-0167
Abstract: Description of Driving Event:
No platforms have been designed to provide personnel access to the orbiter's lower forward fuselage (foward reaction control system cavity) for repairs, maintenance, and/or ...Subject(s) : Flight Equipment , Ground Equipment , Ground Operations , Hardware , -
NASA-LLIS-1617
Abstract: Abstract:
The Pegasus actuator system was redesigned to accommodate the need for greater hinge torque. The decision to re-utilize, as much as possible, of the existing legacy actuator drive system is ...Subject(s) : Accident Investigation , Flight Equipment , Hardware , Safety & Mission Assurance , Test & Verification , -
NACA-TR-877
Abstract: A summary of the results of wind-tunnel tests to determine the high-speed aerodynamic characteristics of six model wings having NACA 65sub1-series sections is presented in this report. The 8-percent-thick wings were superior ...Subject(s) : AERODYNAMIC , AIRCRAFT , AIRFOIL , ANGLE , ASPECT , ATTACK , BOMBER , CHARACTERISTICS , COEFFICIENTS , DRAG , FLAPS , FLIGHT , HIGH , HORIZONTAL , LIFT , LOADING , MACH , MANEUVERS , MODELS , MOMENTS , NUMBER , PITCHING , PROFILES , RATIO , SPEED , THIN , TUNNEL , WIND , WING , WINGS , -
NASA-LLIS-0928
Abstract: Description of Driving Event:
The aft cavity bulkhead was built entirely outside the aircraft with no requirements to demonstrate the actual fit inside the aircraft. After manufacturing was complete, ...Subject(s) : Ground Operations , Test & Verification , -
NACA-TM-910
Abstract: The present report deals with six-component measurements in the small tunnel of the DVL on a model of the BFW-M 27b(sub 1), which were made to determine the effect of rolling and yawing on the air forces and moments. The ... -
NASA-LLIS-2856
Abstract: Abstract:
The flight element design agency modified the design of the External Tank Ground Umbilical Carrier Plate, which is used to vent hydrogen. The design changes were considered minor enough that ...Subject(s) : Cryogenic Systems , Engineering design and project processes and standards , Ground support systems , Launch support systems , Launch Systems , -
NACA-TN-3904
Abstract: An investigation was conducted in order to determine the effectiveness of blowing a jet of air over the flaps of a wing equipped with a 50-percent-chord sliding flap and a 25-percent-chord plain flap in deflecting a propeller ...Subject(s) : AIRPLANES , COMPLETE , DEVICES , HIGH , LIFT , LONGITUDINAL , PERFORMANCE , PROPELLERS , SLIPSTREAM , STABILITY , STATIC , WINGS , -
NASA-LWP-1016
Abstract: Since the beginning of modern all weather aircraft operations, there have been landing incidents and/or accidents each year where aircraft have either run off the end or veered off the side of wet or slippery runways. These ... -
NACA-WR-L-448
Abstract: Force-test measurements in two-dimensional flow have been made in the NACA 4- by 6-foot vertical tunnel of the characteristics of an NACA 0015 airfoil with a balanced flap having a chord 30 percent of the airfoil chord and ... -
NASA-LLIS-0524
Abstract: Description of Driving Event:
On 1-15-91 a failure occurred in the 8' Transonic pressure tunnel during testing of a model wing with attached flap. During the test run, the flap peeled away from the ...Subject(s) : Parts Materials & Processes , Test Article , -
NASA-LLIS-1207
Abstract: Description of Driving Event:
Prior to flight 1A/R and 2A the International Space Station Program (ISSP) and the Space Shuttle Program (SSP) was found to have two separate certification requirements ...Subject(s) : Administration/Organization , Configuration Management , External Relations , Flight Equipment , Flight Operations , Ground Equipment , Ground Operations , Hardware , Independent Verification and Validation , Launch Process , NASA Standards , Payloads , Policy & Planning , Procurement Small Business & Industrial Relations , Range Operations , Research & Development , Risk Management/Assessment , Safety & Mission Assurance , Software , Spacecraft , Standard , Test & Verification , -
NASA-LLIS-1190
Abstract: Description of Driving Event:
On a number of different projects, NASA personnel were denied access to designs for NASA spacecraft. This made review of the adequacy of the design and the resolution of ...Subject(s) : Administration/Organization , Aerospace Safety Advisory Panel , Computers , Energetic Materials - Explosive/Propellant/Pyrotechnic , External Relations , Flight Equipment , Hardware , Human Factors , Independent Verification and Validation , NASA Standards , Parts Materials & Processes , Payloads , Policy & Planning , Procurement Small Business & Industrial Relations , Research & Development , Safety & Mission Assurance , Software , Spacecraft , Standard , Test & Verification ,