US3150848A - Method of decoying a missile from its intended target - Google Patents

Method of decoying a missile from its intended target Download PDF

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US3150848A
US3150848A US122054A US12205461A US3150848A US 3150848 A US3150848 A US 3150848A US 122054 A US122054 A US 122054A US 12205461 A US12205461 A US 12205461A US 3150848 A US3150848 A US 3150848A
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missile
target
aircraft
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decoying
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H11/00—Defence installations; Defence devices
    • F41H11/02—Anti-aircraft or anti-guided missile or anti-torpedo defence installations or systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D1/00—Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
    • B64D1/16—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting

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  • the present invention relates to countermeasures. More, specifically, it relates to a method of decoying a hostile missile of the infrared-seeker type away from an aircraft or other moving target onto which the missile is homing and which it would normally impact to result in the targets destruction.
  • missiles are presently designed to incorporate means which enables them to seek out a particular moving target by homing-in on the infrared energy emitted by the latter. It is not usually possible for the target to evade such a seeker missile, since the latter is capable of following the target regardless of any changes in the latters trajectory which may be instituted in an attempt to avoid being impacted by the missile. At the present time, therefore, missiles of this type are extremely effective against targets such as jet aircraft which emit a relatively high amount of infrared radiation from their propulsion systems.
  • the basic principle underlying the present invention is the creation of a number of spurious sources of radiation in the general vicinity of the target, each of these spurious sources being capable of emitting infrared energy comparable in wave length and intensity to that emitted by the target itself, so that a hostile missile will be decoyed by such spurious radiation sources and will seek out one of the latter to consequently lessen the peril to the intended target.
  • spurious radiation sources of the nature above mentioned may be produced by periodically dispensing from the moving target (such as a bomber or fighter aircraft) imperiled by such a hostile missile discrete quanta of a cohesive substance capable of igniting spontaneously substantially a predetermined period of time following the dispensing thereof, such ignition resulting in the emission of radiant energy having a wave length generally corresponding to that of the radiation emitted by the imperiled target.
  • this substance emitted in discrete quanta is in the form of an aerogel or gelatinous mass composed of a mixture of a pyrophoric and an oxidizer together with a suitable inhibiter (vapor depressant) such ,as a polyglycol.
  • each quanta will radiate energy of a character to which particular detection apparatus of the homing-type missile is sensitive, these detectors being, in most instances, of the lead sulphide, telluride, selenide or indium stibnide type incorporating cutin germanium filters.
  • these detectors being, in most instances, of the lead sulphide, telluride, selenide or indium stibnide type incorporating cutin germanium filters.
  • One object of the present invention is to provide a method for decoying missiles of the infrared homing type away from a moving target.
  • Another object of the invention is to create a series of spurious targets which will decoy a hostile missile away from an intended objective such as a bomber or fighter aircraft, these spurious targets being formed of material dispensed from the aircraft either automatically or under the control of the aircraft pilot.
  • Another object of the present invention is to provide for the combining of a pyrophoric and an oxidizer to form a gray-body aerogel having a high infrared emission factor following the ignition thereof.
  • the charred mass will ideally behave similarly to a black-body radiator, but in practice will only approach this optimum level.
  • FIG. 1 is a pictorial representation of one manner in which the method of the present invention may be em ployed to create spurious targets serving to decoy a hostile seeker missile away from an actual target and thereby lessen the peril to the latter;
  • FIG. 2 is a largely schematic showing of one form of mixing apparatus intended to be carried on the target of FIG. 1 and from which the particular ignitable substance of the present invention is dispensed.
  • FIG. 1 of the drawings there is designated by the reference numeral 10 an airborne vehicle such as a bomber or fighter aircraft.
  • This aircraft is powered by a jet engine or other propulsion system the exhaust of which contains a detectable percentage of infrared radiation.
  • a missile 12 of the target-seeking type which has been launched for the purpose of destroying the aircraft 10 either by impact or by exploding when it has reached a position proximate thereto.
  • Missile 12 consequently incorporates an infrared detector and associated guidance system (not shown) which permits the missile to locate and follow the aircraft 10 by intercepting radiant energy emanating from the aircrafts propulsion system.
  • the aircraft 10 when imperiled, will emit or dispense at periodic intervals a discrete mass or quantum of substance in the general form of a putt or ball.
  • Several of these masses are designated in FIG. 1 of the drawings by the reference numeral 14, although it will be understood that the relative size and spacing of these emitted quanta are distorted in the drawings in order that the invention may be more readily understood.
  • each mass may vary widely while still yielding the effect desired, it might be mentioned, purely as an example, that each ball or puff 14 may have a diameter of approximately 2 to 3 feet and be of either, spherical or toroidal shape.
  • These masses 14 are emitted from an apparatus carried by the aircraft 10, the location of which apparatus is shown generally in FIG. 1 and illustrated in greater detail in FIG. 2, where it is indicated as being attached to, and carried in or by, one wing of the aircraft 10.
  • FIG. 2 sets forth one type of apparatus for dispensing the aerogel of which the energy-radiating masses 14 of FIG. 1 may be constituted.
  • This apparatus includes two cylinders 16 and 18 respectively containing an oxidizing agent and a pyrophoric, the latter being selected from a group which includes, among others, the alkyl and aryl amines, hydrazine hydrate, the metallo-organics (tributylethyl, etc.) and aniline.
  • These cylinders 16 and 18 are arranged so that the respective contents thereof are fed through a metering unit 20 which faces aft of the aircraft 10.
  • the members 16, 18 and 20 are supported on or by one wing of aircraft 10, and preferably positioned within the wing or on the under surface thereof so as to lie in a Zone of minimum air turbulence.
  • Metering unit 20 may include conventional fluid valves which are opened either electrically or mechanically in periodic fashion such, for example, as by electrical impulses applied to the metering unit 20 over a conductor 24 from a standard impulse generator (not shown). Since the mixing nozzle 22 is illustrated as being of annular configuration, the emitted substance in this embodiment takes the form of a toroid, desirable in that it has a relatively large surface area. As will later appear, the radiating surface of each of the masses 14 is largely determinative of the efficiency or energy level which is reached following ignition thereof. The higher this energy level, the greater the chance that the hostile missile 12 will seek out such a spurious target instead of homingin on the aircraft from which the substance constituting such spurious target had been emitted.
  • the oxidizer from cylinder 16 is mixed in stoichiometric proportions With the pyrophoric from cylinder 18. After these substances have been individually metered through the unit 20, the actual combining thereof occurs in the nozzle 22, at which point they are released into the air stream. If desired, the respective chemicals may be brought to the nozzle 22 by means of one or more pumps (not shown) rather than by having them contained as illustrated in pressurized cylinders.
  • each puff or ball of aerogel will be a semisolid material possessing the characteristics of a colloidal solution of a gaseous phase in a solid phase.
  • An ignition inhibitor vapor depressant
  • vapor depressant is present to ensure that no radiation will occur from the emitted mass until a preselected period of time has elasped following the dispensing thereof. At the expiration of such time period, however, ignition occurs, and the mass reaches an absolute temperature such that the energy radiated therefrom simulates the infrared energy emitted from the aircraft 111.
  • each of the masses 14 following ignition becomes an isotropic radiator, producing a flux of sufficient Wattage per steradian to reach the detector of the guidance system incorporated in the hostile missile 12, assuming that the missile lies within a range where it constitutes a hazard to the aircraft.
  • each mass 14 should be as high as possible to achieve a wave length which approaches that of visible light, it may be desirable to employ a submicron mesh of aluminum (or beryllium) in the pyrophoric contained in the cylinder 18 of FIG. 2. This can yield an absolute temperature of 1173 K., which is required for the particular wave band of 2.1 to 2.4 microns over which the missile detector is customarily designed to operate.
  • ultrafine metallic substances may be substituted for aluminum in the pyrophoric 18.
  • W designates the energy emitted in watts per square centimeter of surface area of the mass
  • e is the emissivity factor
  • 0' is Boltzmans constant.
  • the oxidizer in cylinder 16 may be of a particular type such as perchloryl fluoride, chlorine trifluoride or hydrogen peroxide.
  • the choice of oxidant used is governed at least in part by the characteristics of the pyrophoric with which it is to be combined.
  • Wiens Displacement Law governs the particular portion of the spectrum over which energy is radiated by the spurious targets created by following the teaching of the present concept.
  • the wave length of the energy radiated from each such spurious source is inversely proportional to the absolute temperature reached by such source following the spontaneous ignition thereof.
  • the method of decoying a missile of the homing type away from a moving target toward which it has been launched with the intention of destroying such target, the latter being propelled by means which radiates energy as a characteristic of its operation comprising emitting from said moving target a cohesive substance in the form of an aerogel which commences upon the expiration of approximately a preselected period of time following the emission thereof to radiate energy simulating insofar as the homing missile is concerned the energy radiated by said target, thereby in effect creating a decoy to draw said missile away from said moving target and minimize the possibility of the latter being destroyed by the missile.
  • said aerogel includes a pyrophoric, an oxidizer and an inhibitor, the latter determining the duration of the said preselected period of time during which radiation of energy by said substance is delayed following the emission thereof from said moving target.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Description

Sept. 29, 1964 s. E. LAGER 3,150,848
METHOD OF DECOYING A MISSILE FROM ITS INTENDED TARGET Filed June 28, 1961 PATH WHlCH TARGET- SEEKING MISSILE WOULD NORMALLY FOLLOW I HOSTILE f TARGET-SEEKING MISSILE 'KPATI-I WHlCHTARGET-SEEKING g3 MISSILE Is INDUCED To FOLLOW ENERGY-RADIATING MASSES SERVING As DECOYS To DIVERT MISSILE FROM L 4 INTENDED TARGET $82137 ANNULAR MIXING NOZZLE PYROPHORIC METERWG I UNIT OXIDIZER 22 24 FROM AUTOMATIC CONTROL WING OF AIRCRAFT IO (FIGJ) (LOOKING UP) INVEN TOR. SAMUEL E. LAGER ATTORNE United States Patent 3,150,848 METHOD OF DECOYING A MISSILE FRGM ITS INTENDED TARGET Samuel E. Lager, Semis, Calif., assignor to the United States of America as represented by the Secretary of the Navy Filed June 28, 1961, Ser. No. 122,054
6 Claims. (Cl. 244-44) (Granted under Title 35, U8. Code (1952), see. 266) ,The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes Without the payment of any royalties thereon or therefor.
The present invention relates to countermeasures. More, specifically, it relates to a method of decoying a hostile missile of the infrared-seeker type away from an aircraft or other moving target onto which the missile is homing and which it would normally impact to result in the targets destruction.
A number of missiles are presently designed to incorporate means which enables them to seek out a particular moving target by homing-in on the infrared energy emitted by the latter. It is not usually possible for the target to evade such a seeker missile, since the latter is capable of following the target regardless of any changes in the latters trajectory which may be instituted in an attempt to avoid being impacted by the missile. At the present time, therefore, missiles of this type are extremely effective against targets such as jet aircraft which emit a relatively high amount of infrared radiation from their propulsion systems.
The basic principle underlying the present invention is the creation of a number of spurious sources of radiation in the general vicinity of the target, each of these spurious sources being capable of emitting infrared energy comparable in wave length and intensity to that emitted by the target itself, so that a hostile missile will be decoyed by such spurious radiation sources and will seek out one of the latter to consequently lessen the peril to the intended target.
It has been discovered that spurious radiation sources of the nature above mentioned may be produced by periodically dispensing from the moving target (such as a bomber or fighter aircraft) imperiled by such a hostile missile discrete quanta of a cohesive substance capable of igniting spontaneously substantially a predetermined period of time following the dispensing thereof, such ignition resulting in the emission of radiant energy having a wave length generally corresponding to that of the radiation emitted by the imperiled target. In one embodiment, this substance emitted in discrete quanta is in the form of an aerogel or gelatinous mass composed of a mixture of a pyrophoric and an oxidizer together with a suitable inhibiter (vapor depressant) such ,as a polyglycol. Following ignition, each quanta will radiate energy of a character to which particular detection apparatus of the homing-type missile is sensitive, these detectors being, in most instances, of the lead sulphide, telluride, selenide or indium stibnide type incorporating cutin germanium filters. For maximum effectiveness, the
wave length region which thepresent invention is intended flame) to form a series of spurious energy-emitting targets of the present concept in the presence of a suitable inhibitor which delays the ignition time, so that radiant energy emission will not occur in the immediate vicinity of the target. Consequently, a hostile missile will be decoyed to a spot considerably removed spatially from the target to materially reduce the danger to the target itself.
One object of the present invention, therefore, is to provide a method for decoying missiles of the infrared homing type away from a moving target.
Another object of the invention is to create a series of spurious targets which will decoy a hostile missile away from an intended objective such as a bomber or fighter aircraft, these spurious targets being formed of material dispensed from the aircraft either automatically or under the control of the aircraft pilot.
Another object of the present invention is to provide for the combining of a pyrophoric and an oxidizer to form a gray-body aerogel having a high infrared emission factor following the ignition thereof. The charred mass will ideally behave similarly to a black-body radiator, but in practice will only approach this optimum level.
Other objects and many of the attendant advantages of this invention will be readily appreciated as the same become better understood by reference to the following de tailed description when considered in connection with the accompanying drawings wherein:
FIG. 1 is a pictorial representation of one manner in which the method of the present invention may be em ployed to create spurious targets serving to decoy a hostile seeker missile away from an actual target and thereby lessen the peril to the latter; and
FIG. 2 is a largely schematic showing of one form of mixing apparatus intended to be carried on the target of FIG. 1 and from which the particular ignitable substance of the present invention is dispensed.
Referring now to FIG. 1 of the drawings, there is designated by the reference numeral 10 an airborne vehicle such as a bomber or fighter aircraft. This aircraft is powered by a jet engine or other propulsion system the exhaust of which contains a detectable percentage of infrared radiation. Also shown in FIG. 1 is a missile 12 of the target-seeking type which has been launched for the purpose of destroying the aircraft 10 either by impact or by exploding when it has reached a position proximate thereto. Missile 12 consequently incorporates an infrared detector and associated guidance system (not shown) which permits the missile to locate and follow the aircraft 10 by intercepting radiant energy emanating from the aircrafts propulsion system. Under normal circumstances, it is extremely unlikely that the aircraft 10 can take any evasive action which will enable it to avoid being destroyed by the missile 12, since the missiles trajectory is caused to change as a direct result of any change in the direction of aircraft flight.
In accordance with a feature of the present invention, it is contemplated that the aircraft 10, when imperiled, will emit or dispense at periodic intervals a discrete mass or quantum of substance in the general form of a putt or ball. Several of these masses are designated in FIG. 1 of the drawings by the reference numeral 14, although it will be understood that the relative size and spacing of these emitted quanta are distorted in the drawings in order that the invention may be more readily understood. Although the configuration of each mass may vary widely while still yielding the effect desired, it might be mentioned, purely as an example, that each ball or puff 14 may have a diameter of approximately 2 to 3 feet and be of either, spherical or toroidal shape. These masses 14 are emitted from an apparatus carried by the aircraft 10, the location of which apparatus is shown generally in FIG. 1 and illustrated in greater detail in FIG. 2, where it is indicated as being attached to, and carried in or by, one wing of the aircraft 10.
FIG. 2 sets forth one type of apparatus for dispensing the aerogel of which the energy-radiating masses 14 of FIG. 1 may be constituted. This apparatus includes two cylinders 16 and 18 respectively containing an oxidizing agent and a pyrophoric, the latter being selected from a group which includes, among others, the alkyl and aryl amines, hydrazine hydrate, the metallo-organics (tributylethyl, etc.) and aniline. These cylinders 16 and 18 are arranged so that the respective contents thereof are fed through a metering unit 20 which faces aft of the aircraft 10. The members 16, 18 and 20 are supported on or by one wing of aircraft 10, and preferably positioned within the wing or on the under surface thereof so as to lie in a Zone of minimum air turbulence.
Metering unit 20 may include conventional fluid valves which are opened either electrically or mechanically in periodic fashion such, for example, as by electrical impulses applied to the metering unit 20 over a conductor 24 from a standard impulse generator (not shown). Since the mixing nozzle 22 is illustrated as being of annular configuration, the emitted substance in this embodiment takes the form of a toroid, desirable in that it has a relatively large surface area. As will later appear, the radiating surface of each of the masses 14 is largely determinative of the efficiency or energy level which is reached following ignition thereof. The higher this energy level, the greater the chance that the hostile missile 12 will seek out such a spurious target instead of homingin on the aircraft from which the substance constituting such spurious target had been emitted.
In carrying out the method of the present invention, the oxidizer from cylinder 16 is mixed in stoichiometric proportions With the pyrophoric from cylinder 18. After these substances have been individually metered through the unit 20, the actual combining thereof occurs in the nozzle 22, at which point they are released into the air stream. If desired, the respective chemicals may be brought to the nozzle 22 by means of one or more pumps (not shown) rather than by having them contained as illustrated in pressurized cylinders.
Following emission from the nozzle, each puff or ball of aerogel will be a semisolid material possessing the characteristics of a colloidal solution of a gaseous phase in a solid phase. An ignition inhibitor (vapor depressant) is present to ensure that no radiation will occur from the emitted mass until a preselected period of time has elasped following the dispensing thereof. At the expiration of such time period, however, ignition occurs, and the mass reaches an absolute temperature such that the energy radiated therefrom simulates the infrared energy emitted from the aircraft 111. In other words, each of the masses 14 following ignition becomes an isotropic radiator, producing a flux of sufficient Wattage per steradian to reach the detector of the guidance system incorporated in the hostile missile 12, assuming that the missile lies within a range where it constitutes a hazard to the aircraft.
As the flame temperature of each mass 14 should be as high as possible to achieve a wave length which approaches that of visible light, it may be desirable to employ a submicron mesh of aluminum (or beryllium) in the pyrophoric contained in the cylinder 18 of FIG. 2. This can yield an absolute temperature of 1173 K., which is required for the particular wave band of 2.1 to 2.4 microns over which the missile detector is customarily designed to operate.
Since it is desired to produce an extremely high combustion temperature as well as a nonluminous flame following ignition of each of the masses 14, other ultrafine metallic substances may be substituted for aluminum in the pyrophoric 18. These alternative chemical additives include magnesium, amorphous boron, and certain organometallics such as lithium and aluminum borohydride and aluminum trimethyl. It may also be desirable to include VV=6 7T4 O.95 (5.7) (10) watts (1173 K.)
cm. deg.
= 10.4 Watts/cm.
where W designates the energy emitted in watts per square centimeter of surface area of the mass, e is the emissivity factor, and 0' is Boltzmans constant.
Since a high emissivity factor is desired, black-body radiation can be closely approximated by incorporating some such pigment as platinum black, graphite or a cerarno-metallic substance in the pyrophoric material contained in cylinder 18. Furthermore, at extremely high altitudes, the oxidizer in cylinder 16 may be of a particular type such as perchloryl fluoride, chlorine trifluoride or hydrogen peroxide. However, the choice of oxidant used is governed at least in part by the characteristics of the pyrophoric with which it is to be combined.
It will now be appreciated that Wiens Displacement Law governs the particular portion of the spectrum over which energy is radiated by the spurious targets created by following the teaching of the present concept. In other words, the wave length of the energy radiated from each such spurious source is inversely proportional to the absolute temperature reached by such source following the spontaneous ignition thereof.
Obviously many modifications and variations of the present invention are possible in the light of the above teachings. It is therefore to be understood that within the scope of the appended claims the invention may be practiced otherwise than as specifically described.
I claim:
1. The method of decoying a missile of the homing type away from a moving target toward which it has been launched with the intention of destroying such target, the latter being propelled by means which radiates energy as a characteristic of its operation, said method comprising emitting from said moving target a cohesive substance in the form of an aerogel which commences upon the expiration of approximately a preselected period of time following the emission thereof to radiate energy simulating insofar as the homing missile is concerned the energy radiated by said target, thereby in effect creating a decoy to draw said missile away from said moving target and minimize the possibility of the latter being destroyed by the missile.
2. The method of claim 1 in which said substance is emitted only at periodic intervals to form a series of spaced-apart cohesive masses extending rearwardly from said moving target.
3. The method of claim 2 in which each of said cohesive masses possesses the general configuration of a toroid.
4. The method of claim 2 in which said aerogel includes a pyrophoric, an oxidizer and an inhibitor, the latter determining the duration of the said preselected period of time during which radiation of energy by said substance is delayed following the emission thereof from said moving target.
5. The method of decoying a hostile missile of the LR homing type away from a jet aircraft imperiled thereby, said method comprising dispensing from said aircraft at recurring intervals discrete quanta of an aerogel capable of igniting spontaneously substantially a predetermined period of time following the dispensing thereof to thus create spurious sources of radiation having a wave length comparable to that of the radiation emitted by said imperiled aircraft, as a result of which said missile References Cited in the file of this patent UNITED STATES PATENTS Dicke Sept. 9, 1958 Busignies Ian. 27, 1959 Pittinger et al Apr. 19, 1960

Claims (1)

1. THE METHOD OF DECOYING A MISSILE OF THE "HOMING" TYPE AWAY FROM A MOVING TARGET TOWARD WHICH IT HAS BEEN LAUNCHED WITH THE INTENTION OF DESTROYING SUCH TARGET, THE LATTER BEING PROPELLED BY MEANS WHICH RADIATES ENERGY AS A CHARACTERISTIC OF ITS OPERATION, SAID METHOD COMPRISING EMITTING FROM SAID MOVING TARGET A COHESIVE SUBSTANCE IN THE FORM OF AN AEROGEL WHICH COMMENCES UPON THE EXPIRATION OF APPROXIMATELY A PRESELECTED PERIOD OF TIME FOLLOWING THE EMMISSION THEREOF TO RADIATE ENERGY SIMULATING INSOFAR AS THE "HOMING" MISSILE IS CONCERNED THE ENERGY RADIATED BY SAID TARGET, THEREBY IN EFFECT CREATING A DECOY TO DRAW SAID MISSILE AWAY FROM SAID MOVING TARGET AND MINIMIZE THE POSSIBILITY OF THE LATTER BEING DESTROYED BY THE MISSILE.
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US3761929A (en) * 1971-02-24 1973-09-25 Us Navy Radar spoof
US3839940A (en) * 1963-12-13 1974-10-08 Us Air Force Automatic pop-up decoy
US3946555A (en) * 1973-08-22 1976-03-30 Atlantic Research Corporation Process for simulating turbojet engine plumes
US3956729A (en) * 1964-05-12 1976-05-11 David Epstein Countermeasures apparatus
US4019421A (en) * 1974-11-22 1977-04-26 U.S. Philips Corporation Arrangement for selective firing of so-called IR-torches
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US4406227A (en) * 1981-04-09 1983-09-27 The United States Of America As Represented By The Secretary Of The Army System for multistage, aerial dissemination and rapid dispersion of preselected substances
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DE2359758C1 (en) * 1973-11-30 1988-07-28 Buck Chemisch-Technische Werke GmbH & Co, 7347 Bad Überkingen Infrared interference emitters
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US5390605A (en) * 1992-08-11 1995-02-21 Societe Nationale Des Poudres Et Explosifs Stabilized and propelled decoy, emitting in the infra-red
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AU695538B2 (en) * 1994-10-21 1998-08-13 Buck Werke Gmbh & Co. Method for protecting objects, especially ships, that emit a radiation, particularly infrared radiation, against missiles
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US20060060691A1 (en) * 2004-04-30 2006-03-23 Burns Alan A Self-powered tethered decoy for heat-seeking transport aircraft missile defense
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US20070034071A1 (en) * 2005-08-09 2007-02-15 Greene Leonard M Systems and methods for evading heat seeking missles
US20070034072A1 (en) * 2005-08-09 2007-02-15 Greene Leonard M Missile defense system and methods for evading heat seeking missiles
US20070190368A1 (en) * 2006-02-13 2007-08-16 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Camouflage positional elements
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US20160052649A1 (en) * 2014-08-21 2016-02-25 Ventions, Llc Fail-safe command destruct system
US10088278B1 (en) * 2017-04-26 2018-10-02 The Boeing Company Electromagnetic pulse (EMP) generation
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