4,092 research outputs found
NTF model concept for the X-29A. Part 2: Design and fabrication concept
The first concept was done to determine if a small model to fit the NASA Langley sizing criteria could accommodate aerodynamic and mechanical requirements. For a model wing span of 1.7 ft (and a length of 3 ft), the model is 6.25 percent (1/16 scale). The results were encouraging enough for Grumman to request, in early December 1981, that the design concept be refined at NASA Langley, where up-to-date cryogenic model design information was available. This working session was completed by a Grumman designer by mid-December. In its present form, the concept will be the basis for any continued effort
Signature of exotic particles in light by light scattering
We discuss the implications on light by light scattering of two kind of
exotic particles: doubly charged scalar bosons and doubly charged fermions; the
virtual effects of a nonstandard singly charged gauge boson are also examined.
These particles, if their masses lie in the range 0.1--1.0 TeV, will have a
clear signature in the future linear colliders. The present analysis has the
advantage that it depends only on electromagnetic symmetry, so it is applicable
to any model which predicts this class of particles. In particular, our results
have interesting consequences on left-right models and their supersymmetric
extension.Comment: 6 eps figures. Requires elsevier.cl
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