R. C. Airships developed in IIT Bombay Prof. Rajkumar S. Pant - - PowerPoint PPT Presentation

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R. C. Airships developed in IIT Bombay Prof. Rajkumar S. Pant - - PowerPoint PPT Presentation

Oct 08, 2023 209 likes •705 views

R. C. Airships developed in IIT Bombay Prof. Rajkumar S. Pant Aerospace Engineering Department IIT Bombay AE-664 Lighter-Than-Air Systems Capsule-1 Genesis of LTA Systems @ IIT Bombay PADD AE-664 Lighter-Than-Air Systems Capsule-1 Program on

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  • R. C. Airships developed in IIT Bombay
  • Prof. Rajkumar S. Pant

Aerospace Engineering Department

IIT Bombay

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PADD

Genesis of LTA Systems @ IIT Bombay

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Program on Airship Design & Development

 Carried out from 2001 to 2003  Seven Member Team headed by Prof. S. K. Sane, IITB

  • 4 from IITB & 3 from Industry ( ADRDE, ADA, AAI)
  • One Independent Consultant

 Establish Techno-Economic Feasibility

  • Operation, Design & Development of Airships in India

 Promote Usage

  • Multiple roles; Pax/Cargo, CasEvac, Tourism, ………

 Develop Technology Base

  • Enhance existing expertise in Parachutes & Aerostats

 Explore avenues of Joint Development

  • National & Global Partners
  • Private Sector participation
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Tasks Completed in PADD

 Project Definition Report

  • Design and Development of Two Airships
  • Cargo and Passengers in Lower Himalayas, UK

 Demo airship & PaxCargo Airship

  • Payload = 100 kg & 1500 kg
  • @ Hot (ISA+15) and High (3500 m) conditions
  • Operation at lower altitudes also explored

 Feasibility Report for leasing a few airships

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Methodology for Airship initial sizing

 Estimate Volume (or Payload) of non-rigid a/s  Meeting user-specified and operating reqmt.  Useful for…

  • Conceptual design studies
  • Determine sensitivity of operational requirements
  • n configuration related parameters
  • Investigating what-if scenarios
  • Carrying out MDO of an airship system
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 Methodology for Determination of Baseline

Specifications of a Non-Rigid Airship

 Paper AIAA-2003-6830, Proceedings of AIAA's 3rd Annual

Aviation Technology, Integration, and Operations (ATIO) Forum, Denver, Colorado, Nov. 17-19, 2003.

 Technical Note, AIAA Journal of Aircraft, Vol. 45, No. 6,

  • pp. 2177-2182, Nov-Dec 2008.

Key Publications

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Pax ax/ C / Cargo Air Airship ip Demo emo Airsh ship Demo emo Airsh ship Sus uspensi pension c n car

Key Output of PADD

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REMOTELY CONTROLLED AIRSHIPS

Design, Fabrication & Flying

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Parameter MICRO MINI MACRO Length (m) 4.99 6.42 8.00 Envelope Volume (m3) 6.8 8.6 26.6 Payload (kg) 1.0 3.0 6.0 Endurance (min) 15 18 25

  • Max. Speed (m/s)

7 10 12 Engine Power (HP) 0.41 0.60 2.0

Micro, Mini and Macro R C Airships

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Mic icro RC

  • RC Air

Airship p (2002 2002)

Volume = 6.8 m3 Length = 5 m Engine Displacement = 2.49 cc Power = 0.41 BHP @ 17000 RPM Payload = ~ 1 kg

  • Max. Speed = 25 km/h

Endurance = 15 min with 200 ml fuel

  • No. of Flight days = 4

at IIT Gymkhana First Flight Video

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Min ini RC RC Air Airshi hip (200 003)

Length = 5 m Volume = 8.64 m3 Payload = ~3.0 kg

  • Max. Speed = 36 kmph

Endurance = 15 min with 300 ml fuel

  • No. of Flight days = 6 at Pune,

Bangalore, Coimbatore Pune Trial Video

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Moo Mooring Mas Mast

Gimbal Mechanism

Mooring Mast in Use

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Macro RC

  • RC Air

Airship p (2009 2009)

Length = 8 m Volume = 26.59 m3 Payload = 6.0 kg Flight Altitude = SASE, Manali, 6572 ft Engine Displacement = 10.0 cc Power = 2 BHP @ 14000 RPM Flight Video On-Board Camera View

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Jus ust af after ter releas release e at at SASE H Helipad elipad

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DEVELOPMENT OF AUTONOMOUS OUTDOOR AIRSHIP

Aim of the project

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 Data collection applications which require

long endurance flight

 Ability to Hover at a location  Independent of LOS of Flyer or ground

station

Need for Autonomous Airship

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 Investigate the efficacy of

  • outdoor remotely controlled airship
  • autonomous airships
  • as a platform for aerial observation and data collection

 Obtain an insight into issues related to

  • operational capabilities
  • limitations

Objectives

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 Methodology for airship conceptual sizing and design  6-DOF dynamic model of the airship

  • suitable for controller design & computer simulation

 Study strategies for autonomous control system  Implement the best one an airship

Tasks to be done

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Baseline specifications

Parameter Value Net lifting capacity @ sea-level 2 kg

  • Max. permissible wind for safe operation

10 m/s

  • Max. speed

15 m/s Deployment altitude 200 m Cruising altitude (AGL) 100 m Endurance at cruising condition 30 min Control Range 1 km

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FABRICATION AND SYSTEM INTEGRATION

Outdoor Autonomous Airship

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Gondola Design and Fabrication

CAD Model Fabricated Gondola

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System Integration & Testing

Nose Battens Yaw motor on Fin Fins on Envelope

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Fully Assembled Airship

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Attaching Nose Battens to Mast

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Field Trials (29 & 30 Nov 2013)

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The Test Crew

Jônatas Sant’ Anna Santos, ALTAVE

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INDOOR & OUTDOOR AIRSHIPS

Student Projects

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KVPY Summer Project I

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KVPY Summer Project I

Demo Flight, August 2004

Rahul Sangole, PVG CoET, Pune Rohit Belapurkar, MIT, Pune Kshitija Deshpande PIET, Pune June-August 2004

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RC Capsule Airship

Shailesh Agashe, Ketan Palashikar, Gaurav Nakanekar, Rahul Sangole

PVG’s COET, Pune, 2006

Demo Flight, March 2006

Speed & eed & Direction

  • n Cont
  • ntrol

Sp Spot tu t turn

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IN INDO DOOR A R AIR IRSHI HIPS

Student Projects

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TAMUBlimp Project (2011)

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Demonstration Flight

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ZEPHYR 2013 BLIMP

Semi-Outdoor Blimp

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Indoor Airship 2013

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Lift Test

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AE-664 Lighter-Than-Air Systems Capsule-1 Design Inputs Payload 0.3 kg Fabric Density 190 gsm Shape Zhiyuan Output Support Equipment 1.0 kg Length 4.2 m Volume 3.6 m3

Semi-outdoor Airship

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1st Feb 2013: Structures Lab IITB

Test Flight (Indoor)

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2nd Mar 2013: Victor Menezes Convention Centre IITB

Test Flight (Semi-Outdoor)

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BIOMIMETIC AIRSHIP

Recent Project

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Existing Biomimetic LTA Systems

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Other Biomimetic LTA systems 42

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Selection of Shape

 Performance  Fineness ratio  Swimming styles

Butterfly fish

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Design Issues in Biomimetic Systems

 Performance

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  • Fin shapes
  • Swimming style
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INDOOR BIOMIMETIC AIRSHIP

LTA Systems Laboratory, IIT Bombay

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Key Fabrication Issues

  • Material= Nano-clay coated polyester
  • Shape = Butterfly Fish
  • Joining Process = Heat Sealing
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Assembled Airship