发明名称 |
Lifting-fuselage/wing aircraft having low induced drag |
摘要 |
A lifting-fuselage/wing aircraft having low drag at a selected cruise condition. The aircraft includes (a) a lifting fuselage having a cross-section constituting an airfoil in a majority of vertical planes taken parallel to the flight direction and an aspect ratio (ARf) of 0.33 to 1.10; (b) wings fixed to the fuselage having an aspect ratio (ARw) of at least 5.0; (c) a mechanism controlling aircraft attitude; and (d) a mechanism propelling the aircraft; wherein the wings and fuselage produce lift in varying proportions depending upon flight conditions as follows: (i) the aircraft has a cruise design point in which the fuselage lift coefficient (CLF) is 0.08 or less, and (ii) the fuselage lift coefficient is at least 0.50 at an angle of attack ( alpha LZo) of 10 DEG , in level flight at sea level (ISA) with all movable lift enhancing devices retracted.
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申请公布号 |
US6098922(A) |
申请公布日期 |
2000.08.08 |
申请号 |
US19980157377 |
申请日期 |
1998.09.21 |
申请人 |
REDWOOD AIRCRAFT CORPORATION |
发明人 |
HAHL, ROBERT W. |
分类号 |
B64C1/00;B64C39/00;(IPC1-7):B64C1/00;B64C3/54 |
主分类号 |
B64C1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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