JPS641698A - Air floating device - Google Patents
Air floating deviceInfo
- Publication number
- JPS641698A JPS641698A JP2097087A JP2097087A JPS641698A JP S641698 A JPS641698 A JP S641698A JP 2097087 A JP2097087 A JP 2097087A JP 2097087 A JP2097087 A JP 2097087A JP S641698 A JPS641698 A JP S641698A
- Authority
- JP
- Japan
- Prior art keywords
- airframe
- center
- gravity
- duct
- distance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005484 gravity Effects 0.000 abstract 4
Landscapes
- Toys (AREA)
Abstract
PURPOSE: To secure self stability even if affected by external factors and to dispense with attitude control by setting the ratio of a duct diameter to the distance between the center of gravity and the aerodynamic center of an airframe in a region where it is stabilized against inclination of the airframe and movement in the propelling direction.
CONSTITUTION: An equation of motion is established against inclination of an airframe and movement in the propelling direction, and a coefficient of the specific equation is converted to a function of the ratio of the diameter of a duct 4 against the distance between the airframe center of gravity CG and the aerodynamic center AC, and then, stability conditions of the airframe are acquired. Then, there exists a region where the airframe is stabilized within the range limited by the positive ratio of the diameter of the duct 4 against the distance between the airframe center of gravity CG and the aerodynamic center AC. By adopting the ratio of the diameter of the duct 4 against the distance between the stabilized airframe center of gravity CG and the aerodynamic center AC as a design condition, self stability can be secured even if affected by external factors and a special attitude control is dispensed with.
COPYRIGHT: (C)1989,JPO
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2097087A JPS641698A (en) | 1986-07-18 | 1987-01-31 | Air floating device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61-169395 | 1986-07-18 | ||
| JP16939586 | 1986-07-18 | ||
| JP2097087A JPS641698A (en) | 1986-07-18 | 1987-01-31 | Air floating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH011698A JPH011698A (en) | 1989-01-06 |
| JPS641698A true JPS641698A (en) | 1989-01-06 |
Family
ID=26357975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2097087A Pending JPS641698A (en) | 1986-07-18 | 1987-01-31 | Air floating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS641698A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06293296A (en) * | 1992-12-28 | 1994-10-21 | Hughes Missile Syst Co | Pilotless aircraft for effecting vertical take off and landing and level cruise flight |
| JP2021146982A (en) * | 2020-03-23 | 2021-09-27 | 三菱重工業株式会社 | Ducted fan device and aircraft |
-
1987
- 1987-01-31 JP JP2097087A patent/JPS641698A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06293296A (en) * | 1992-12-28 | 1994-10-21 | Hughes Missile Syst Co | Pilotless aircraft for effecting vertical take off and landing and level cruise flight |
| JP2021146982A (en) * | 2020-03-23 | 2021-09-27 | 三菱重工業株式会社 | Ducted fan device and aircraft |
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