Results 91 to 100 of about 8,499 (231)

Aerospike thrust chamber program [PDF]

open access: yes
An existing, but damaged, 25,000-pound thrust, flightweight, oxygen/hydrogen aerospike rocket thrust chamber was disassembled and partially repaired.
Campbell, J., Jr., Cobb, S. M.
core   +1 more source

High performance turboalternator and associated hardware. 3. Design of backup gas bearings [PDF]

open access: yes
Turboalternator gas bearing system for spacecraft electric power ...
Castelli, V.   +3 more
core   +1 more source

High speed spherical roller-bearing analysis and comparison with experimental performance [PDF]

open access: yes
The capabilities of a spherical roller bearing analysis/design tool, Spherbean (spherical bearing analysis) are described. Capabilities of the analysis are demonstrated and verified by comparison with experimental data.
Dyba, G., Kleckner, R. J.
core   +1 more source

Gyrotorque transmission system for wind turbines [PDF]

open access: yes, 2004
The GyroTorqueTM transmission system employs gyroscopic torque reaction to transmit power offering an alternative to the gearbox and electrical variable speed drive of a conventional wind turbine.
Jamieson, P.   +2 more
core  

Inducer dynamics full-flow, full-admission hydraulic turbine drive Interim report for tasks 1, 2, and 3 [PDF]

open access: yes
Hydrodynamical and mechanical design layout for two-speed hydraulic turbine inducer, computer simulation of pumping system and test facility performance, and study of demonstration ...
Buckmann, P. S.   +4 more
core   +1 more source

Modified face seal for positive film stiffness [PDF]

open access: yes, 1981
The film stiffness of a face seal is improved without increasing the sealing and dam area by using an apparatus which includes a primary seal ring in the form of a nose piece. A spring forces a sealing surface on the seal ring into sealing contact with a
Etsion, I., Lipshitz, A.
core   +1 more source

An Enhanced Projection-Iterative-Methods-Based Optimizer for Complex Constrained Engineering Design Problems

open access: yesComputation
This paper proposes an Enhanced Projection-Iterative-Methods-based Optimizer (EPIMO) to overcome the limitations of its predecessor, the Projection-Iterative-Methods-based Optimizer (PIMO), including deterministic parameter decay, insufficient diversity ...
Xuemei Zhu   +5 more
doaj   +1 more source

Evaluation of DSS-14 pedestal-review of top surface repair procedures [PDF]

open access: yes
Proposed repair procedures for the top surface of the pedestal supporting the hydrostatic bearing runner for the 64m Antenna are presented. These procedures included: (1) removal of existing grout and concrete to approximately 8 in.
Musser, D. W.   +2 more
core   +1 more source

Seals Research at Texas A/M University [PDF]

open access: yes, 1991
The Turbomachinery Laboratory at Texas A&M has been providing experimental data and computational codes for the design seals for many years. The program began with the development of a Halon based seal test rig.
Morrison, Gerald L.
core   +1 more source

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