SECURITIES AND EXCHANGE COMMISSION
                          Washington, D.C. 20549


                                 FORM 8-K


                              CURRENT REPORT
              Pursuant to Section 13 or 15(d) of the Securities
                           Exchange Act of 1934


   Date of Report (Date of earliest event reported): June 22, 2006


                            SONEX RESEARCH, INC.
              (Exact name of registrant as specified in Charter)


         Maryland                  000-14465              52-1188993
      (State or other           (Commision file         (IRS employer
      jurisdiction of               number)           identification no.)
       incorporation)


                     23 Hudson Street, Annapolis, MD 21401
                    (Address of principal executive offices)


                              (410) 266-5556
             (Registrant's telephone number, including area code)


                                    N/A
         (Former name or former address, if changed since last report)



Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following   provisions  (see  General  Instruction  A.2.  below):

[ ]  Written communications  pursuant to Rule 425 under the Securities Act
     (17 CFR 230.425)
[ ]  Soliciting  material  pursuant to Rule 14a-12  under the Exchange Act
     (17 CFR 240.14a-12)
[ ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange  Act (17 CFR  240.14d-2(b))
[ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))






ITEM 8.01 - OTHER EVENTS

On June 22, 2006, the  Registrant  issued the following  announcement  over the
newswire and posted it on its website (www.sonexresearch.com):


SONEX SIGNS LETTER OF INTENT FOR UAV HEAVY FUEL ENGINE TECHNOLOGY LICENSE


ANNAPOLIS,  MARYLAND,  June 22, 2006 - SONEX RESEARCH, INC. (OTC SONX), a leader
in the field of combustion technology,  announced that it has signed a Letter of
Intent  (LOI) with a producer of unmanned  aerial  vehicles  (UAVs)  pursuant to
which the parties have expressed an intention to complete  negotiations  for and
conclude a  technology  licensing  agreement  by the end of the summer.  The LOI
contemplates  an exclusive  license for a part of the patented Sonex  Combustion
System (SCS) heavy fuel engine  (HFE)  technology  applicable  to a certain size
range of small engines.  While Sonex must caution that the definitive  licensing
agreement has not yet been finalized,  it has received a non-refundable  deposit
of  $25,000  towards  future  royalties  as part of the  LOI.  The LOI  contains
confidentiality  provisions  that preclude the disclosure of the customer's name
and further details of the  relationship at this time. Both parties will release
a joint  statement upon  completion of the agreement  including the terms of the
joint activities.

The  Department  of Defense  (DoD) now  requires  engines used in UAVs and other
military  applications for which gasoline  storage and use are  undesirable,  to
operate on less  volatile,  heavy  fuels to reduce the  hazard  associated  with
gasoline. Sonex has established a viable HFE technology baseline by applying its
patented SCS modified combustion chamber design and proprietary  starting system
to the  conversion  of  lightweight,  spark-ignited  (SI),  two-stroke  gasoline
engines for use in military  applications such as UAVs to start and operate with
reduced fuel consumption and low smoke on kerosene-based  heavy fuels JP-5, JP-8
and D-2 diesel (with lubricant  additive) while retaining the ignition precision
of the SI process.  The SCS process for two-stroke engines achieves  in-cylinder
control of ignition and combustion through the chemical/turbulent enhancement of
combustion  via  combustion  chamber  modifications  that  change  the  chemical
characteristics  and fuel  disbursement  characteristics  within the  combustion
chamber.

Sonex has previously  announced two agreements with this unnamed  customer,  the
first in  October  2005 worth  approximately  $113,000  to develop a  combustion
system to convert the small,  two-stroke,  SI gasoline engine used in one of the
customer's  production  UAVs to heavy fuel  operation.  Following the successful
demonstration  to  the  customer  in  February  2006  of a  "Proof  of  Concept"
laboratory  SCS HFETM  prototype  operating  on JP-5  heavy  fuel,  the  Company
announced  the  award  in  March  2006  of a  follow-on  Phase 2  project  worth
approximately $235,000 to develop, fabricate and qualify pre-production,  flight
ready SCS HFEsTM.  Phase 2 is expected to be completed  this  summer,  following
which the  parties  plan to  undertake  additional  phases for SCS HFETM  flight
certification testing and production introduction.



Contact:  George E. Ponticas,  CFO, Sonex  Research,  Inc.,  tel:  410-266-5556,
email: george.ponticas@sonex-na.com, website: www.sonexresearch.com.


About Sonex

Sonex  Research,  Inc.,  a leader  in the  field of  combustion  technology,  is
developing its patented Sonex Combustion  System (SCS)  piston-based  technology
for in-cylinder  control of ignition and  combustion,  designed to increase fuel
mileage and reduce  emissions  of internal  combustion  engines.  Sonex plans to
complete  development,  commercialize  and  market  its  Sonex  Controlled  Auto
Ignition (SCAI)  combustion  process to the automotive  industry to improve fuel
efficiency of gasoline powered vehicles.  Additionally,  independent third-party
testing has confirmed the potential of the SCS application  for  direct-injected
diesel  engines  to  significantly   reduce  harmful  soot  in-cylinder  without
increasing  fuel  consumption.  Other  SCS  designs  are being  used to  convert
gasoline engines of various sizes to operate on safer, diesel-type "heavy fuels"
for use in military and commercial  applications requiring light weight and safe
handling and storage of fuel, such as in UAVs (unmanned aerial vehicles).


CAUTION REGARDING FORWARD-LOOKING STATEMENTS

"Forward-looking"  statements  contained in this report, as well as all publicly
disseminated  material about the Company, are made pursuant to the "safe harbor"
provisions of the Private  Securities  Litigation Act. Such statements are based
on current  expectations,  estimates,  projections and assumptions by management
with respect to matters such as commercial acceptance of the SCS technology, the
impact of  competition,  and the  Company's  financial  condition  or results of
operations.  Readers are cautioned  that such  statements  are not guarantees of
future  performance and involve risks and uncertainties  that could cause actual
results to differ  materially from those  expressed in any such  forward-looking
statements.


RISK FACTORS

Additional  information  regarding  the risks  faced by Sonex is provided in the
Company's  periodic  filings with the Securities and Exchange  Commission  (SEC)
under the heading "Risk  Factors".  Such filings are available upon request from
the Company or online in the SEC's EDGAR database at  www.sec.gov.  The Company,
however,  is delinquent in its filings with the SEC. It has not filed its Annual
Reports on Form 10-KSB for the years ended December 31, 2004 and 2005 because it
lacks the financial  resources to engage its independent  accountants to conduct
audits of the December 31, 2004 and 2005  financial  statements,  and because it
lacks the  staffing to prepare  the Form 10-KSB  itself due in large part to the
amount of time  management has spent in responding to  litigation.  For the same
reasons,  the  Company  has been  unable to file its  Quarterly  Reports on Form
10-QSB for 2005 and 2006.  The Company is unable to predict when it will be able
to make these  filings and there can be no  assurance  that the filings  will be
made at all. In addition, there can be no assurance that a public market for the
Company's Common Stock will continue to exist.


                                 ###






SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


June 22, 2006


SONEX RESEARCH, INC.
Registrant



/s/ George E. Ponticas
----------------------
George E. Ponticas
Chief Financial Officer and Secretary