UWE Bristol Engineering showcase 2015

Kouame Boris Joel Yao
Beng Aerospace Design Engineering
Project Supervisor
Dr. Chris Toomer
Design of a Border Security UAV/UAS
Scenario
The adaptability of Unmanned Aerial
Vehicle
(UAVs) has expended exponentially in the
most recent decade because of
advancement in the field and the need to
protect the life of human from hazardous
situations. In an overwhelmingly, military
industry current UAVs scarcely begin to
expose what’s underneath of their
regarded situations. With advances in
intelligence, surveillance and
reconnaissance (ISR), optical payloads are
apt to the task of border security
monitoring. Hence new type of UAVs has
to be developed to decrease UAV
production cost and increase efficiency.
Our design is a combination of Blended
wing Body geometry, Solar Panel
technology and new a mixture of ratio
control and internet signal to command our
aircraft.
The Aims
Our main focus on this project is to
successfully design a new and efficient
unmanned airframe using blend Wing Body
techniques to be capable of undergoing
intelligence, surveillance and
reconnaissance designated missions.
Comparing with conventional UAV, our
BWB UAV should be able to operate
efficiently and ecologically. Our blended
wing body UAV should have more
aerodynamics and structural benefice
compare to conventional UAV’s
configuration. Several existing UAV with a
wing body are already in the market,
therefore it has been considered to
compare our airframe to the BAT
Unmanned Aerial Vehicle formerly known
as Killer Bee.
Advantages
• High structural weight.
• Lift is generated from main body and wing section.
• Streamlined shape between main body and wing
intersection reduces interference drag.
• Stress on blended wing body airframe is less than the stress
on conventional airframe .
• No tail section which reduce further drag.
Disadvantages
• Directional and pitch control issues as no tail are installed.
• Moment arm length from the CG to the elevons and rudder
is small.
• BWBs poses challenges in the stability and control of our
airframe.
BWB UAV Internal Structure
BWB UAV Internal View
Cl vs AoA with Various Reynold Number
Project summary
This project described the conceptual and
preliminary design of a blended wing body airframe
whose mission will be the protection and surveillance
of any potential and illegal on a country border . This
project focused on the production of an efficient
and aerodynamic airframe capable to detect and
observe potential threats with his monitoring
systems.
Project Objectives
The objective of this study is to design an highly
efficient blended wing body UAV and manufacture
the aircraft in next year. Our airframe is intended to
be a very high performance electric ISR UAB capable
of sustained steady flight using electric power from
sun and the battery packs installed inside its body in
order to extend its range, capabilities and
performance. In order to achieve all of the above,
several conceptual design calculations using Raymer
Conceptual design book and etc… was set to be
performed. And CFD analysis was conduced using
Solidworks Flow Simulation and XFLR5 programs to
optimize our design.
Project Conclusion
Our blended wing body UAV airframe is tailless
design that integrates the wing and fuselage. It is
most efficient airframe in the future due to the
nature if its shape, its configuration shows some
important aerodynamics advantages in lift and drags
as compared to conventional type of UAVs. With the
current desire for a greener and alternative source of
energy aircraft is needed. Solar panel will be
integrated in the centre body platform in order to
increase the range of for our UAV by permanently
recharging the battery pack of our UAV which is
enough for any surveillance equipment needed to
investigate borders. The ultimate goal is to
revolutionize the way aircraft flies around the globe,
to be more efficient and smarter with the way aircraft
flies.