System, apparatus and method for long endurance vertical takeoff and landing vehicle
A vertical take-off and landing (VTOL) aircraft according to an aspect of the present invention comprises a fuselage, an empennage having an all-moving horizontal stabilizer located at a tail end of the fuselage, a wing having the fuselage positioned approximately halfway between the distal ends of the wing, wherein the wing is configured to transform between a substantially straight wing configuration and a canted wing configuration using a canted hinge located on each side of the fuselage. The VTOL aircraft may further includes one or more retractable pogo supports, wherein a retractable pogo support is configured to deploy from each of the wing's distal ends.
1. A vertical take-off and landing (VTOL) aircraft comprising:
a fuselage;
an empennage located at a tail end of the VTOL aircraft, wherein the empennage is configured to engage the ground during a launch operation;
a wing; and
a retractable pogo support to deploy from the fuselage and engage the ground during the launch operation, wherein the retractable pogo support and the empennage define a tripod support to support the VTOL aircraft during the launch operation.
2. The VTOL aircraft of claim 1 , wherein the retractable pogo support is deployed using a spring.
3. The VTOL aircraft of claim 1 , wherein the tripod support supports the fuselage at a predetermined stand-up angle during the launch operation.
4. The VTOL aircraft of claim 3 , wherein the predetermined stand-up angle is between 45 and 90 degrees.
5. The VTOL aircraft of claim 4 , wherein the predetermined stand-up angle is between 65 and 75 degrees.
6. The VTOL aircraft of claim 1 , wherein the wing has an aspect ratio of at least 10.
7. The VTOL aircraft of claim 1 , wherein the VTOL aircraft comprises a first wing-mounted engine and a second wing-mounted engine, wherein the first wing-mounted engine and the second wing-mounted engine and are positioned on opposite sides of the fuselage.
8. The VTOL aircraft of claim 7 , wherein the first wing-mounted engine and the second wing-mounted engine counter-rotate relative to one another.
9. The VTOL aircraft of claim 7 , wherein the wing is a fixed wing.
10. The VTOL aircraft of claim 7 , wherein the first wing-mounted engine and the second wing-mounted engine are configured to pivot relative to the fuselage about a transverse axis.
11. The VTOL aircraft of claim 7 , wherein the wing is configured to pivot relative to the fuselage about a transverse axis.
12. The VTOL aircraft of claim 1 , wherein the VTOL aircraft comprises a payload for intelligence, surveillance, and reconnaissance.
13. The VTOL aircraft of claim 1 , wherein the empennage comprises a vertical stabilizer and an all-moving horizontal stabilizer, wherein the retractable pogo support and at least two points of the all-moving horizontal stabilizer define the tripod support during the launch operation.
14. A vertical take-off and landing (VTOL) aircraft comprising:
a fuselage;
an empennage located at a tail end of the VTOL aircraft, wherein the empennage is configured to engage the ground during a launch operation to define a first ground contact point and a second ground contact point;
a retractable pogo support to deploy from the fuselage during the launch operation,
wherein a distal end of the retractable pogo support is configured to engage the ground to define a third ground contact point, and
wherein the first, second, and third ground contact points define a tripod support to support the fuselage of the VTOL aircraft at a predetermined stand-up angle during the launch operation;
a wing having a first wing tip and a second wing tip, the fuselage positioned between the first and second wing tips; and
a first propulsor and a second propulsor, the first propulsor positioned on the wing left of the fuselage and the second propulsor positioned on the wing right of the fuselage.
15. The VTOL aircraft of claim 14 , wherein the wing is a fixed wing.
16. The VTOL aircraft of claim 14 , wherein the first propulsor and the second propulsor are configured to pivot relative to the fuselage about a transverse axis.
17. The VTOL aircraft of claim 14 , wherein the wing is configured to pivot relative to the fuselage about a transverse axis.
18. The VTOL aircraft of claim 14 , wherein the first propulsor and the second propulsor counter-rotate relative to one another.
19. The VTOL aircraft of claim 14 , wherein the predetermined stand-up angle is between 65 and 75 degrees.
20. A method for launching a vertical take-off and landing (VTOL) aircraft having a propulsor, a fuselage, a retractable pogo support coupled to the fuselage, a wing, and an empennage located at a tail end of the VTOL aircraft, the method comprising:
extending the retractable pogo support from said fuselage until a distal end of the retractable pogo support contacts the ground to define a first ground contact point;
continuing to extend the retractable pogo support from said fuselage until at least two points on the empennage make contact with the ground to define a second ground contact point and a third ground contact point;
continuing to extend the retractable pogo support from said fuselage until the fuselage of the VTOL aircraft is positioned at a predetermined stand-up angle relative to the ground, wherein the VTOL aircraft is supported by a tripod support defined by the first ground contact point, the second ground contact point, and the third ground contact point; and
controlling the propulsor to launch the VTOL aircraft.
21. The method of claim 20 , wherein the predetermined stand-up angle is between 65 and 75 degrees.
22. The method of claim 20 , wherein the wing is a fixed wing having a first wing tip and a second wing tip, the fuselage positioned approximately halfway between the first wing tip and second wing tip.