A Large Diurnal Variation of the Geomagnetically-trapped Radiation

Diurnal variation of the geomagnetically trapped radiatio

Incoming lower-energy particles and their association with airglow and aurorae

Critical evaluation of studies and measurements of incoming lower-energy particles and association with airglow and aurora

The mutual effect of precipitated auroral electrons and the auroral electrojet

Computer model calculations of mutual effects of precipitated auroral electrons and electroje

The Extrema-effect in Total Elastic Molecular Beam Scattering Cross Sections for Characterization of the Potential Well

Extrema effect in total elastic molecular beam scattering cross sections for characterization of potential wel

Geomagnetically Trapped Radiation Produced by a High-Altitude Nuclear Explosion on July 9, 1962

Geomagnetically trapped radiation produced by a high altitude nuclear explosio

Solar Protons and Magnetic Storms in July 1961

Injun i satellite observations of solar protons and magnetic storm

Electrons in the Earth's Outer Radiation Zone

Electrons in the earths outer radiation bel

Advanced manufacturing development of a composite empennage component for L-1011 aircraft

This is the final report of technical work conducted during the fourth phase of a multiphase program having the objective of the design, development and flight evaluation of an advanced composite empennage component manufactured in a production environment at a cost competitive with those of its metal counterpart, and at a weight savings of at least 20 percent. The empennage component selected for this program is the vertical fin box of the L-1011 aircraft. The box structure extends from the fuselage production joint to the tip rib and includes front and rear spars. During Phase 4 of the program, production quality tooling was designed and manufactured to produce three sets of covers, ribs, spars, miscellaneous parts, and subassemblies to assemble three complete ACVF units. Recurring and nonrecurring cost data were compiled and documented in the updated producibility/design to cost plan. Nondestruct inspections, quality control tests, and quality acceptance tests were performed in accordance with the quality assurance plan and the structural integrity control plan. Records were maintained to provide traceability of material and parts throughout the manufacturing development phase. It was also determined that additional tooling would not be required to support the current and projected L-1011 production rate