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Company Information:

Company Name: Hersh Acoustical Engineering, Inc.
City: Calabasas
State: CA
Zip+4: 91302 5875
Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No
Website URL: N/A
Phone: (818) 224-4699

Award Totals:

Program/Phase Award Amount ($) Number of Awards
SBIR Phase I $760,597.00 11
SBIR Phase II $1,912,730.00 4

Award List:

DYNAMIC CONTROL OF INSTABILITIES WITHIN LIQUID ROCKET ENGINES - FEASIBILITY STUDY

Award Year / Program / Phase: 1986 / SBIR / Phase I
Agency / Branch: DOD / USAF
Principal Investigator: Alan S Hersh
Award Amount: $49,129.00

DYNAMIC CONTROL OF INSTABILITIES WITHIN LIQUID ROCKET ENGINES - FEASIBILITY STUDY

Award Year / Program / Phase: 1987 / SBIR / Phase II
Agency / Branch: DOD / USAF
Principal Investigator: Alan S Hersh
Award Amount: $247,903.00
Abstract:
A research program is proposed to assess the feasibility of designing an adaptive feedback control system to dynamically tune acoustic cavities for maximum damping of unstable pressures within liquid rocket engines over its operational range from ignition to shutoff. the research effort is divided… More

LIGHTWEIGHT, COMPACT NOISE SOURCE.

Award Year / Program / Phase: 1992 / SBIR / Phase I
Agency / Branch: DOD / USAF
Principal Investigator: Dr. Alan S. Hersh
Award Amount: $46,033.00
Abstract:
A research program is proposed to demonstrate the feasibility of a company proprietary lightweight, compact sound source concept to generate the high intensity, high frequency controlled sound pressures required in experimental investigations of combustion instability in liquid rocket engines. the… More

Optimized Nacelle Acoustic Liners Based On Mode Cut-Off Ratio Method

Award Year / Program / Phase: 1995 / SBIR / Phase I
Agency: NASA
Principal Investigator: Alan S. Hersh , Vice President
Award Amount: $69,569.00

Nozzle Admittance Tests In A Cylindrical Chamber Excited By Transverse Modes

Award Year / Program / Phase: 1995 / SBIR / Phase I
Agency: NASA
Principal Investigator: Alan S. Hersh , Vice President
Award Amount: $69,131.00

Active Control of Broadband Rotor/Stator Noise in Turbofan Engines

Award Year / Program / Phase: 1998 / SBIR / Phase I
Agency: NASA
Principal Investigator:
Award Amount: $68,970.00

N/A

Award Year / Program / Phase: 1999 / SBIR / Phase II
Agency: NASA
Principal Investigator:
Award Amount: $473,116.00

Active Control of Rotor-Lock Noise in Turbofan Engines

Award Year / Program / Phase: 2002 / SBIR / Phase I
Agency: NASA
Principal Investigator: Bruce Walker, Principal Investigator
Award Amount: $69,896.00
Abstract:
The proposed innovation is the design of an active control system to reduce aircraft turbofan engine rotor-lock inlet noise generated when rotor tip speeds become transonic. The system design for this program would be tailored to the requirements of the NASA GRC 22-inch diameter Source Diagnostic… More

Measurement/Model of Effects of Grazing Flow on Resonator Impedance

Award Year / Program / Phase: 2002 / SBIR / Phase II
Agency: NASA
Principal Investigator: Alan Hersh, Principal Investigator
Award Amount: $591,903.00
Abstract:
The proposed SBIR Phase II research project is divided into four parts. The principal objective of the first part is to conduct hot-wire measurements to assess the accuracy of Dean?s Two Microphone Impedance Measurement Method. They will also be used to calibrate CAA numerical codes. The principal… More

Measurement/Model of Effects of Grazing Flow on Resonator Impedance

Award Year / Program / Phase: 2002 / SBIR / Phase I
Agency: NASA
Principal Investigator: Alan Hersh, Principal Investigator
Award Amount: $69,974.00
Abstract:
The proposed SBIR Phase II research project is divided into four parts. The principal objective of the first part is to conduct hot-wire measurements to assess the accuracy of Dean?s Two Microphone Impedance Measurement Method. They will also be used to calibrate CAA numerical codes. The principal… More

Acoustic noise reduction for large aircraft

Award Year / Program / Phase: 2003 / SBIR / Phase I
Agency / Branch: DOD / NAVY
Principal Investigator: Bruce E. Walker, Vice President
Award Amount: $68,869.00
Abstract:
The feasibility of applying the following five in-house innovative active noise control technologies to suppress turbofan and turboprop engine noise will be investigated: (1) the design of a hybrid active/passive compact active control system, to reducetonal and broadband noise radiated by… More

Air Vehicle Sound Suppression Technology

Award Year / Program / Phase: 2003 / SBIR / Phase I
Agency / Branch: DOD / ARMY
Principal Investigator: Bruce E. Walker, Vice President
Award Amount: $69,378.00
Abstract:
Unmanned surveillance aircraft, particularly rotorcraft, radiate noise that significantly impacts their detection range. The Phase I research project will identify and quantify noise radiation and propagation factors that affect detection range, andsuggest strategies for improving this range. The… More

Numerical and Physical Modeling of the Response of Resonator Liners to Intense Sound and High Speed Grazing Flow

Award Year / Program / Phase: 2009 / SBIR / Phase I
Agency: NASA
Principal Investigator: Alan S. Hersh, Principal Investigator
Award Amount: $99,653.00
Abstract:
An innovative research program is proposed that numerically and physically models the response of resonator liners to intense sound and high speed grazing flow. The research program is divided into two parts. Part 1 addresses the feasibility of performing direct numerical simulation (DNS) of the… More

Numerical and Physical Modeling of the Response of Resonator Liners to Intense Sound and High Speed Grazing Flow

Award Year / Program / Phase: 2010 / SBIR / Phase II
Agency: NASA
Principal Investigator: Alan Hersh, Principal Investigator
Award Amount: $599,808.00
Abstract:
An aeroacoustic computational code based upon a numerical solution of the full Navier-Stokes equations will be developed to provide a deep understanding of the physical behavior of resonator liners exposed to intense sound and boundary-layer grazing flow. The code computes the entire flow and… More

Predictions of the Acoustic Nearfield on a Carrier Deck

Award Year / Program / Phase: 2010 / SBIR / Phase I
Agency / Branch: DOD / NAVY
Principal Investigator: Alan Hersh, Vice President
Award Amount: $79,995.00
Abstract:
On a carrier deck, navy personnel operate in close proximity to high-speed jets. They are, therefore, exposed to high intensity jet noise resulting in possible severe loss of hearing. The objective of the project is to develop jet noise prediction capability for quantitative assessment of the… More