Silent Engine Test Shelters

Current Situation

LF sound generated from Ground Run Tests is a health hazard for families of Defense personnel living in close proximity to the air station. It is a source of annoyance and has been the reason for complaints by civilians and the local community near airports. As a result of which, operators cannot carry out ground run tests as per their requirement.

Silent Engine Test Shelters

  • These shelters provide 24x7 operational capability in all weather conditions, so ground run up testing can be done at will and without constraints (thus keeping the day free for flight operations)
  • Noise attenuation is less than 75 dB(A) at 77 m and less than 65 dB(A) in occupied areas of the building during full power after-burner operations.
  • Integration of multiple systems provides central control, monitoring; including fuel monitoring and fire safety and systems for personnel safety.

The Silent Engine Test Shelters entail the following

  • Facility for testing installed aircraft engines
  • Hangar style main doors
  • Primary air inlets
  • Bypass or secondary air inlets
  • Acoustical enclosure
  • Control / observation room
  • Exhaust augmenter
  • Exhaust Stack
  • Doubles as test cell for uninstalled testing
  • Permanent or re-locatable
  • Many configurations or variations

Why choose us?

Exclusive engineering partnerships, teaming agreement with the world’s leading aircraft test facility specialist with 60+ years domain experience

  • Our projects are being executed under Make in India Program
  • Turnkey provider: from foundations through life cycle support
  • In-house ‘one stop’, tailored engineering solution
  • Use of local specialists = supportability
  • COTS hardware and software = no dependency
  • Training of customer personnel = no dependency

Shelter Design Considerations

    Primary Design Considerations
  • Aircraft Sizes and Thrust Capacity
  • Required Acoustical Performance
  • Aerothermal Flow
    Secondary Design Considerations
  • Off-Wing Testing
  • Lifespan
  • Maintainability
  • Ancillary Systems
  • Site Location
  • Desired Variants

    Standard Equipment
  • Acoustic Shelter
  • M&E services
  • Aircraft fuel supply system (if doing uninstalled tests)
  • Compressed air system for engine start if required (or electric start)
  • Fire Control System,
  • Aircraft chocks and tie down
  • Communications equipment to cockpit from control room

Optional Ad-ons
In addition to a range of variants, Altair SETS also provides you with various optional ad-ons.

  • Air flow control
  • A separate acoustically sheltered durable and ergonomic control room
  • Auxiliary rooms/crew quarters
  • Integration of multiple systems with central control, monitoring and safety systems
  • HVAC
  • De-humidification (DH) equipment, if required
  • Full data acquisition system
  • Thrust stand for uninstalled tests
  • Engine handling equipment
  • Specialist measurement equipment, etc.

Customized Engineering
The shelters are a completely customized engineering package which includes 3D modelling, acoustic mapping and CFD analysis to ensure aero dynamic, thermal, structural and acoustic performance. Custom engineering also helps in qualification of OEM cross calibration testing. Furthermore, it also ensures consistency throughout the life of the facility.

Design Variants
It is possible to build a single Silent Engine Testing Shelter for multiple aircrafts (e.g. MiG, Dornier, etc.) operating from a single location.
Helicopters usually require a separate facility due to difference in aerodynamic pressures.
Altair also provides a range of design variants for the shelter, as follows:

  • Concrete or steel construction
  • Curved or pitched roof
  • Side or front primary air inlets
  • Secondary air inlets or not
  • Fixed or mobile control room/cab
  • Oval, round, or rectangular augmenter
  • Exhaust turning vanes or deflector ramp
  • Short or tall exhaust stack
  • Tail-hook or wheel chock restraints
  • Other variants

Product Options

SETS – Fully enclosed shelters for on-wing & UET (Uninstalled Engine Testing) for:

  • Jet Aircraft
  • Turbo propeller Aircraft
  • Helicopters
Three-Sided Ground Run Enclosures