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   Technology and Product Development

    Basic Information

Technology developed: Design and Fabrication of Autonomous Flapping Wing Unmanned Air Vehicle for Surveillance and Aerial Photography (TP19764658455)
Category: Product(Hardware/Material/Software)
Details of Inventor(s):
Inventor Institution/Organization/Company Department Designation
Professor Debopam Das Indian Institute of Technology (IIT) Kanpur Department of Aerospace Engineering
Professor Abhishek Indian Institute of Technology (IIT) Kanpur Department of Aerospace Engineering
Professor K.S. Venkatesh Indian Institute of Technology (IIT) Kanpur Department of Electrical Engineering
Technical Application Area: Aviation
If 'Other', please specify:
Please give more details of new technical application area:
Two new flying models have been constructed of wingspan 1.6m each with different mechanism and weight. Various materials were tested for a good wing construction and different arrangements of stiffeners. Polythene wing membrane (40 grams /sqm ) proved to deliver superior performance than a polyurethane coated nylon fabric (80 grams /sqm) Density of the wing membrane is critically important and plays a vital role in the flight performance. The nature of flexibility for the large wing needs to be investigated. Wind tunnel testing has been carried on a smaller model of 1 m wingspan (Cleo) using ATI mini 40 6axis load cell at NWTF
Organization(s):
Indian Institute of Technology (IIT) Kanpur
Affiliated Ministry: Institution Funding (Self Supported)
Type of technology development: Indigenous
Does the technology help in replacing any import items currently
procured from outside India?
Yes
Does the technology have export potential? Yes
Category of Technology developed: Immediate Deployment
Stage of Development: Prototype Level
Please describe in detail including the TRL Level:
Two new flying models have been constructed of wingspan 1.6m each with different mechanism and weight. Various materials were tested for a good wing construction and different arrangements of stiffeners. Polythene wing membrane 40 grams sqm proved to deliver superior performance than a polyurethane coated nylon fabric 80 grams sqm Density of the wing membrane is critically important and plays a vital role in the flight performance. The nature of flexibility for the large wing needs to be investigated. Wind tunnel testing has been carried on a smaller model of 1 m wingspan Cleo using ATI mini 40 6axis load cell at NWTF

    Abstract:

Applications: Two new flying models have been constructed of wingspan 1.6m each with different mechanism and weight. Various materials were tested for a good wing construction and different arrangements of stiffeners. Polythene wing membrane 40 grams sqm proved to deliver superior performance than a polyurethane coated nylon fabric 80 grams sqm Density of the wing membrane is critically important and plays a vital role in the flight performance. The nature of flexibility for the large wing needs to be investigated. Wind tunnel testing has been carried on a smaller model of 1 m wingspan Cleo using ATI mini 40 6axis load cell at NWTF Flight data (Euler angles and rates) are collected using a NAVSTIK autopilot with onboard data logging. Unlike an aircraft, the attitude of ornithopter contains ripples of oscillations which has same frequency as the flapping of the wings and is filtered using a low pass filter to get the attitude of the vehicle. The tail movement generates a coupling between pitch and yaw. To decouple, a mixing is introduced in the tail i.e. when the tail turns to yaw, it also pitches up to compensate for the effective reduction of tail area due to turning. The vehicle is further tuned manually by adjusting gains of the autopilot by flying and testing. Loiter is accomplished by flying in a circle of given radius. Once properly tuned the vehicle was able to fly through the specified path.
Advantages: Flight data (Euler angles and rates) are collected using a NAVSTIK autopilot with onboard data logging. Unlike an aircraft, the attitude of ornithopter contains ripples of oscillations which has same frequency as the flapping of the wings and is filtered using a low pass filter to get the attitude of the vehicle. The tail movement generates a coupling between pitch and yaw. To decouple, a mixing is introduced in the tail i.e. when the tail turns to yaw, it also pitches up to compensate for the effective reduction of tail area due to turning. The vehicle is further tuned manually by adjusting gains of the autopilot by flying and testing. Loiter is accomplished by flying in a circle of given radius. Once properly tuned the vehicle was able to fly through the specified path.

    Technology Inputs:

Imported Equipment/Spare Parts:
Equipment/Spare Parts Year ITC-HS Code
NA
Indigenous Equipment/Spare Parts:
Equipment/Spare Parts Year ITC-HS Code
NA
Imported Raw Materials:
Raw Materials Year ITC-HS Code
NA
Indigenous Raw Materials:
Raw Materials Year ITC-HS Code
NA
Existing R&D Facilities used:
Facilities Year ITC-HS Code
NA

   Patents & Publications:

Patents:
Filed Patents (No.) Granted Patents (No.) Year
0 0 NA
Publications:
Submitted (No.) Published (No.) Year
0 0 NA

    Commercialization Potential:

Who are the Potential Licensees?
What commercially available products address
the same problem?
Company Product Problem Addressed
Would you like to develop this invention further with
corporate research support?
Yes
Would you be interested in participating in cluster based
programs for commercialization research or business
planning for your invention?
Yes
      Submitted by: Technical Team Date of Submission: 1-5-2023



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