Aeronautics and astronautics – Aircraft structure – Details
Reexamination Certificate
2006-10-10
2006-10-10
Dinh, Tien (Department: 3644)
Aeronautics and astronautics
Aircraft structure
Details
Reexamination Certificate
active
07118072
ABSTRACT:
It is an object of the present invention to provide a flying object using a thin elongated nose cone with a small tip angle for reducing the air resistance during flying, wherein the maximum loading capacity can be increased without decreasing the volume efficiency of the flying object by limitations placed on the accommodation space, regardless of the structure thereof.In the flying object in accordance with the present invention, which comprises a nose cone in the tip portion, the nose cone portion has a compressed structure in the axial direction during accommodation and expands on the tip side in the axial direction during flying, due to an expandable nose cone structure such that a disk with a small diameter is disposed in the forward position and the disks with a successively increasing diameter are disposed in the axial direction. After separation, the nose cone expands in the axial direction, deep cavities are formed between the disks, and a fine elongated nose cone with a small tip angle is provided, whereby the air resistance is reduced.
REFERENCES:
patent: 1065506 (1913-06-01), Constantin
patent: 3041992 (1962-07-01), Lee
patent: 3282216 (1966-11-01), Calfee et al.
patent: 3425650 (1969-02-01), Silva
patent: 3643901 (1972-02-01), Patapis
patent: 4549464 (1985-10-01), Hawkins et al.
patent: 4650139 (1987-03-01), Taylor et al.
patent: 4770369 (1988-09-01), Flock et al.
patent: 5463957 (1995-11-01), Jensen et al.
patent: 5464172 (1995-11-01), Jensen et al.
patent: 6698684 (2004-03-01), Henne et al.
patent: 486 061 (1948-12-01), None
patent: 3347005 (1985-07-01), None
patent: 8-226798 (1996-09-01), None
patent: 2001-141399 (2001-05-01), None
Robert L. Stallings, Jr., et al. “Experimental Cavity Pressure Distributions at Supersonic Speeds”, NASA Technical Paper 2683, 1987 pp. 1-75.
Maureen B. Tracy et al., “Cavity Unsteady-Pressure Measurements at Subsonic and Transonic Speeds”, NASA Technical Paper 3669, Dec. 1997, pp. 1-72.
J. Peter Reding, et al. “Unsteady Aerodynamic Considerations in the Design of a Drag-Reduction Spike”, Journal of Spacecraft and Rockets; vol. 14. No. 1, Janvier 1977, 1954, pp. 54-60, XP002327451 Easton, PA, US.
Hongo Motoyuki
Kobayashi Hiroaki
Maru Yusuke
Sato Tetsuya
Tanatsugu Nobuhiro
Dinh Tien
Japan Aerospace Exploration Agency
Westerman, Hattori, Daniels & Adrian , LLP.
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