CN105952551A - External-combustion self-stamping jet power device - Google Patents

External-combustion self-stamping jet power device Download PDF

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Publication number
CN105952551A
CN105952551A CN201610300759.0A CN201610300759A CN105952551A CN 105952551 A CN105952551 A CN 105952551A CN 201610300759 A CN201610300759 A CN 201610300759A CN 105952551 A CN105952551 A CN 105952551A
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air
prime
heating chamber
pipe
jet pipe
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CN201610300759.0A
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李治国
李天佐
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李治国
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Priority to CN201610300759.0A priority Critical patent/CN105952551A/en
Publication of CN105952551A publication Critical patent/CN105952551A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02KJET-PROPULSION PLANTS
    • F02K7/00Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
    • F02K7/10Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof characterised by having ram-action compression, i.e. aero-thermo-dynamic-ducts or ram-jet engines
    • F02K7/14Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof characterised by having ram-action compression, i.e. aero-thermo-dynamic-ducts or ram-jet engines with external combustion, e.g. scram-jet engines

Abstract

The invention discloses an external-combustion self-stamping jet power device. The external-combustion self-stamping jet power device comprises a heating feedback unit and a stress application unit. The heating feedback unit comprises a heating chamber, a hot airflow feedback pipe, a forward-stage tail jet pipe and an external combustion chamber. The stress application unit comprises a backward-stage mixing chamber and a backward-stage tail jet pipe. Heat feedback airflow jetted out from a gas outlet of the hot airflow feedback pipe and air flow motivated and carried by the heat feedback airflow are mixed and together enter the heating chamber to be mixed and heated. Part of heated gas is jetted out through the forward-stage tail jet pipe and motivates and carries the air flow to together enter the backward-stage mixing chamber, and the other part of the heated gas enters the hot airflow feedback pipe. Air motivated by the airflow jetted out through the forward-stage tail jet pipe enters the backward-stage mixing chamber through a backward-stage air inlet, is mixed with the gas jetted out through the forward-stage tail jet pipe and then is jetted out through the backward-stage tail jet pipe to be converted into thrust. According to the external-combustion self-stamping jet power device, the structure is simple, no rotating component exists, the manufacturing cost is low, and operation is safe and reliable, so that the flight safety is effectively ensured.

Description

External combustion is from punching jetting power set
Technical field
The present invention relates to a kind of power set, more specifically, relate to a kind of external combustion from punching jetting power set.
Background technology
At aviation field, electromotor mainly has whirlpool spraying machine, turbofan machine, whirlpool oar machine, whirlpool axle machine;Extra pulse machine and punching also occur Press.
Wherein, whirlpool spraying machine is primarily present following problems: 1, be not suitable for hypersonic flight;2, easily there is surge self-destruction;3、 Flying bird enters and can cause to ruin;
Stamping machine is primarily present following problems: 1, under zero power test can not self-starting, aircraft can not be used;2, subsonic flight In, extremely inefficient, without practical value;3, ultra-combustion ramjet machine, flame instability, easily stops working, it is difficult to refire.
Summary of the invention
It is an object of the invention to for the above remain functional defect, excavate hydrodynamics and thermodynamics and intersect it Potentiality, abandon compressor and combustion gas turbine, and provide a kind of external combustion from punching jetting power set.
Be the technical scheme is that by realizing the purpose of the present invention
A kind of external combustion is from punching jetting power set, including heating feedback unit and afterburning unit, described heating feedback Unit includes heating chamber, thermal current feedback pipe, prime jet pipe and external combustor, and described heating chamber is placed in described external combustor In, described heating chamber one end is provided with prime air intlet, and the described heating chamber other end is provided with prime air stream outlet, described before Level air stream outlet is connected with the gas feed of described prime jet pipe;The gas feed of described thermal current feedback pipe is fixedly connected on One end that described heating chamber is corresponding with described prime air stream outlet, the gas outlet of described thermal current feedback pipe is fixedly connected on One end that described heating chamber is corresponding with described prime air intlet;Described afterburning unit includes rear class mixing chamber and the spray of rear class tail Pipe, the front end of described rear class mixing chamber is provided with rear class air intlet, the gas that the gas outlet of described prime jet pipe ejects Stream enters described rear class mixing chamber, and the gas outlet end of described rear class mixing chamber is connected with described rear class jet pipe;Described steam The thermal feedback air-flow that the gas outlet of stream feedback pipe ejects mixes one with the air stream carried by described thermal feedback air-flow lasing And entering Hybrid Heating in described heating chamber, the portion gas after described oven heats is sprayed by described prime jet pipe And excitation carries air stream and enters described rear class mixing chamber in the lump, another part gas after described oven heats enters In described thermal current feedback pipe;The air that the air-flow ejected by described prime jet pipe encourages is by described rear class air intlet Enter in described rear class mixing chamber, and the gas ejected with described prime jet pipe mixes, sprayed by described rear class tail afterwards Pipe sprays, and turns to thrust.
The exciting gas that described thermal current feedback pipe inspection goes out carries fresh air and enters the formation of described heating chamber in the lump certainly Punching press, the gaseous mixture of the porch of described heating chamber pour in speed U >=1020m s-1
In described heating chamber, the temperature of air-flow is 2000 ± 200 DEG C.
The material of described heating chamber is tungsten system or high-temperature ceramics material.
Compared with prior art, the invention has the beneficial effects as follows:
The power set of the present invention are by the way of feedback excites so that prime becomes a low thrust external combustion and sprays from punching press Device of air, the low thrust of prime is combined with the afterburning unit amplification of rear class again, forms high thrust total from punching jetting power Become.May be used for jet plane, navaho, fly to attack speedboat.Have an advantage that
1, simple in construction, uses external combustion form punching structure, parts without spin, low cost of manufacture.
2, safety is run: due to parts without high speed rotating in hot room, decrease the probability broken down, without surge, Safe and reliable to operation.
3, flight safety: be empty in respectively managing due to room each in this device, without any parts, air-flow do not had obstacle, when The foreign bodies such as flying bird can be ejected along with air-flow after entering, and has effectively ensured flight safety.
4, fuel is saved: can expand with fuel distance is 6.8 times, and bomber can realize flying equator without air refuelling One circle;Airliner fuel-economizing 85.3%, not only reduces discharge but also increases profit margin.
5, wide range runs: from M00.7 → M6, i.e. all can use this from the hypersonic flight of the subsonic speed in low latitude to high-altitude Class device is power, and avoids ultra-combustion ramjet machine flame-out danger in the air.
6, high thrust-weight ratio: in in-service aircraft, whirlpool spraying machine thrust-weight ratio is the highest by 7.36, and turbofan machine is the highest by 8.5, the external combustion of the present invention From the thrust-weight ratio of punching jetting power set up to more than 50.Lightweight more fuel-efficient.
Accompanying drawing explanation
Fig. 1 show the external combustion of the present invention structure principle chart from punching jetting power set.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 show the external combustion of the present invention structure principle chart from punching jetting power set, including the heating on the left of dotted line Afterburning unit on the right side of feedback unit and dotted line.Described heating feedback unit includes that external combustor 6, heating chamber 1, thermal current are anti- Feedback pipe 5 and prime jet pipe 2.Described heating chamber 1 is placed in described external combustor 6, and described heating chamber 1 one end is provided with prime Air intlet, described heating chamber 1 other end is provided with prime air stream outlet, described prime air stream outlet and described prime jet pipe The gas feed of 2 connects.The gas feed of described thermal current feedback pipe 5 is fixedly connected on described heating chamber 1 and described prime gas One end that flow export is corresponding, the gas outlet of described thermal current feedback pipe 5 is fixedly connected on described heating chamber 1 and described prime One end that air intlet is corresponding.Described afterburning unit includes rear class mixing chamber 3 and rear class jet pipe 4, described rear class mixing chamber 3 Front end be provided with rear class air intlet, the air-flow that the gas outlet of described prime jet pipe 2 ejects carries is excited air Entering described rear class mixing chamber 3 in the lump, the gas outlet end of described rear class mixing chamber 3 is connected with described rear class jet pipe 4.It is heated The air-flow feedback excitation of pipe 5 jet and the air that carries by the described prime air intlet described heating chamber 1 of entrance, and with institute State in the thermal feedback air-flow that ejects of outlet of steam feedback pipe 5 is blended in described heating chamber 1 heated, through described heating chamber 1 Portion gas after heating sprays into described rear class mixing chamber 3 by described prime jet pipe 2, after described heating chamber 1 heats Another part gas enters in described thermal current feedback pipe 5.Air is by the excitation of prime jet pipe 2 jet and carries by described Rear class air intlet enters in rear class mixing chamber 3, and the gas ejected with described prime jet pipe 2 mixes, and passes through institute afterwards State rear class jet pipe 4 to spray, it is thus achieved that thrust F4
Gas and the air excited by it that described thermal current feedback pipe 5 ejects mix and with speed U >=M03(U≥ 1020m·s-1) speed enter described heating chamber 1 formed from punching press, instead of the compressor in the spraying machine of whirlpool.
Air-flow can be heated to 2000 ± 200 DEG C by described heating chamber 1.
The material of described heating chamber 1 is preferably tungsten system material or high-temperature ceramics.
Prime heating chamber 1 and rear class mixing chamber 3 be shaped as curved surface, similar to whirlpool spraying machine combustor.Enter heating chamber 1 Gaseous mixture, at full speed pours in heavy in section, and flow slowing down, static pressure raise, and is formed from punching press.Afterburning level high flow rate little quality gas The gaseous mixture that stream is the big quality of low flow velocity, then turn to bigger thrust after rear class jet pipe 4 ejection, do not consume fuel prime Thrust amplifies many times.
In Fig. 1: for heating feedback unit on the left of dotted line;It it is afterburning unit on the right side of dotted line;Wherein, the fire of external combustor 6 Flame temperature about 2500 DEG C ± 200 DEG C, posts additional heat-insulation layer () in figure slightly.In heating chamber 1, the gaseous mixture poured in is heated to (2000 ± 200) DEG C, mixed gas quality min-1=mf+mf’.Jet flow quality m of prime jet pipe 22, speed U2(prime jet pipe 2 Thrust F2=m2×U2), with the air m encouraged by it2' enter in the lump in rear class mixing chamber 3, synthesize quality min-3.Thermal current Jet flow quality m of feedback pipe 5f, speed Uf, and motivate air mf', mfWith mf' it is mixed into min-1, with 1020m s-1Speed Enter in heating chamber 1.In rear class mixing chamber 3, the air-flow m poured inin-3For m2With by it swash into air m2' sum.Rear class tail Jet flow quality m of jet pipe 44=min-3, speed U4, thrust F of rear class jet pipe 44=m4×U4
Embodiment
External combustor 6 can use routine have kinds of schemes selective.One of them is conventional huge blowtorch type External heater, composition includes fuel tank, oil pump, vaporizing zone, combustor, flue gas leading.Vaporizing zone preheats in advance, after lighting Enter self-heating, maintain high temperature.
High pressure kerosene, through jet pipe ejection at a high speed, turns to high velocity air through high-temperature evaporation district and carries enough ambient airs one And pouring in combustor, fully burning is heating chamber 1 heat supply.Flue gas leading heat exchange by the road is that to enter the environment of described combustor big Gas preheats, and to reclaim heat energy, and improves ignition temperature.
Excited target and pour in the air of heating chamber 1, temperature is 0 DEG C, quality mf' it is 8.529 s-1;Enter heating chamber 1 In mixed airflow, its quality min-1It is 13.529 s-1, speed Uin-1For Mo3(1020m·s-1), quilt in heating chamber 1 It is heated to about 2000 DEG C;
Wherein one more air-flow adiabatic expansion (being cooled to 0 DEG C) in prime jet pipe 2, spray flow quality m2For 8.0529㎏·s-1, firing rate u2For 1677.83m s-1
Heating chamber 1 is heated to sub-fraction (5 s of the air-flow of nearly 2000 DEG C-1) make absolutely through thermal current feedback pipe 5 Thermal expansion, through its end with uf=1677.83m s-1Speed ejection, and carry 8.529 s-1Air, pour in together In heating chamber 1, reheat, then spray, circulate over and over again ...
Adapt to different requirement, design sheets has different data groups.Above take out one group of typical data and (be suitable for the speed of a ship or plane M0.7 → M1.2), also as original foundation hereafter.
One, mixture temperature and the determination of JET-2 jet initial velocity
(1) mixture temperature
Notation convention: JET-F is the feedback air-flow of thermal current feedback pipe end ejection: flow mf, flow velocity Uf;mf' it is quilt JET-F swashs the ambient air into heating chamber 1;min-1=mf+mf' be feedback air-flow and be excited air sum, i.e. pour in heating chamber The gaseous mixture of 1.
Service requirement:Pour in the mixed gas quality m of heating chamberin-1, flow velocity is necessarily equal to or higher than Mo3 (notes: when pouring in punching The air-flow of hydraulic motor reaches Mo3, thermal efficiency η ≈ 0.64 may be put to practicality.See " hydrodynamics outline ").
Known conditions:mf=5kg s-1,mf'=8.529kg s-1. mixed airflow min-1=5+8.529= 13.529kg·s-1Gaseous mixture pours in speed U of heating chamber 1in-1=Mo3 (i.e. 1020m s-1)。
Gaseous mixture kinetic energy: This kinetic energy is exactly the kinetic energy feeding back air-flow JET-F, it is known that mf=5kg s-1, then require that the jet initial velocity of JET F is UF,
U F = ( 7037785.8 k g · m 2 · s - 3 1 2 × 5 k g · s - 1 ) 1 2 = 1677.830 m · S - 1 .
JET F is from high temperature T adiabatic expansion to 0 DEG C of kinetic energy E convertedK, and
Adiabatic expansion kinetic energyThen
So gaseous mixture must be heated to
(2) initial velocity of JET 2:
The JET 2 i.e. jet flow of prime tail pipe 2: quality stream m28.529㎏·s-1, speed U2;Based on same heating, identical The adiabatic expansion of the temperature difference.So U2=Uf=1677.83m S-1
That is, JET 2 mass flowrate 8.529 s-1, flow velocity 1677.830m s-1
Two, prime thrust: F2=m2×u2=8.529 S-1×1677.830m·s-1=14310.214N.
Three, rear class is passive assistor, it is not necessary to refuelling again.The air entered in rear class mixing chamber 3 by JET-2 excitation is Air2, make its flow be JET-2 299 times, i.e. pour in mixed gas quality min-3=m2+m2'=m2+299m2=300m2, and order Air-flow JET-2 and Air2In rear class mixing chamber 3, in mixing, energy loss is zero, then must haveIt is known that JET-2 pushes away Power is F2=m2×U2=14310.214N, according to law of conservation of energy, now, the air-flow JET-4 that rear class jet pipe 4 ejects Thrust F provided4For:
F 4 = 300 m 2 × U 2 300 = 300 F 2 = 300 × 14310.21 2 = 247860 N .
Effect of this passive assistor visible: needn't oil consumption, unexpectedly thrust is amplified to 17.32 (i.e.) times!
This multiple is it is achieved that industry blowtorch in use, is held under the arm the empty quality poured in: combustible gas quality is exactly N × 102 (N ≈ 1 → 5) processing temperature is the lowest, and N value is the highest.
Four, prime oil consumption
The machine is open fire type, and expands fully, and jet flow is down to 0 DEG C (contrasting: generally spraying machine whirlpool, whirlpool jet flow about 500 DEG C), front Cascade burning kinetic energy: combustion heat energy ≈ 0.4, therefore prime fuel oil consumes moilFor:
moil=(prime energy of the impinging jet ÷ 0.4) ÷ kerosene calorific value=1/2 × 8.529 S-1×(1677.83m·S-1)2 ÷0.4÷42845000J·㎏-1≈0.7㎏·S-1
Five, complete machine thrust: oil consumption is r
Reference value: WS-10A normal thrust 86370N, oil consumption rate 1.667 S-1(0.695/dN h), then its thrust Oil consumption ratio is
The then thrust of the power set of the present invention: fuel consumption values is that the multiple A of WS-10A is:
A = r / Δ = 354085 N · ( k g · s - 1 ) - 1 52030 N · ( k g · s - 1 ) - 1 = 6.8.
In other words, obtaining equal thrust, the power set oil consumption of the present invention is only the 14.7% of WS-10A, fuel-economizing 85.3%. In like manner, the power set of the present invention consume commensurability 6.8 times that its thrust of fuel oil is WS-10A.
When as the power of aircraft, need to have with other and meet the corollary apparatus of service condition and be used in combination.This Bright may be also used in other field: such as: hypersonic speed cruise missile, armed reconnaissance unmanned plane, two caches effect guided missile destroyers etc..
Six, system start-up
The starting device of routine can be selected.If starting device is by compressed air bottle (25atm), starting valve, jet sprays Mouth S forms.
The startup optimization process of the present invention is as follows:
1, start-up course:
(A) valve moment opens (such as opening 0.1S returning to customs to close)
(B) jet nozzle S provides air-flow pulse: about 2000m s-1, 1kg s-1, 0.1S;(steel cylinder air about 25atm)
(C) there is 2.844kg s-1Air energized enter heating chamber;
(D) jet and air stream mixed traffic 3.844kg s-1, flow velocity 1020m s-1
(E) gaseous mixture abrupt deceleration in prime heating chamber 1, static pressure rises to about about 5atm;
(F) pressure gaseous mixture is heated to high temperature about 2000 DEG C;
(G) of high-pressure high-temperature gas, makees adiabatic expansion through prime jet pipe 2 and accelerates ejection, form thrust F2, F2= m2×U2
(H) another of high-pressure high-temperature gas, implements feedback from punching press: do adiabatic expansion through thermal current feedback pipe 5 and accelerate Eject mf, and drive fresh air mf' together pour in heating chamber, reheat, reflation, then feed back from punching press ... mf And mf' increasing, reach design load and enter stable running.
The air-flow sprayed through thermal current feedback pipe is " self-starting air-flow ".Thermal current feedback pipe ejection " self-starting gas continuously Stream ", prime heating feedback unit runs continuously, and continuously generates thrust F2, prime heating feedback unit is lasting by launching into Running, start-up course is complete.
2, prime heating feedback unit thrust
(A) gaseous mixture entering heating chamber 1 porch must assure that flow velocity 1020m s-1
(B) the air-flow m of thermal current feedback pipe 5 injectionfHeating chamber 1 is sprayed back again for heating chamber 1, self-loopa in genus system, The system that is not counted in is imported and exported.
It is loyal to Kirchhoff's law, so being excited to pour in the stream of air mass flow=prime jet pipe 2 ejection of heating chamber 1 Amount, i.e. m2=mf’。
Data are illustrated
1. the gaseous mixture speed making heating chamber 1 entrance is 1020m s-1, it being heated to 1977 DEG C, adiabatic expansion is cooled to 0 DEG C, i.e. temperature difference △ T=1977K.
In this way, the effluxvelocity of prime jet pipe 2 and thermal current feedback pipe 5 is about 1677.83m s-1, it is known that mf= 5kg·s-1
2. requirement that pour in mixed airflow speed U of heating chamber 1in-11020m·s-1, understand according to kinetic energy conservation, pour in The gaseous mixture m of heating chamber 1in-1Flow 13.529kg s-1
(note:)
3. it is excited target and to pour in the air mass flow of heating chamber 1 be mf'=min-1-mf=13.529-5=8.529kg s-1
4. prime jet pipe 2 jet thrust F is understood2For: F2=m2×U2=8.529kg s-1×1677.83m·s-1= 14310.212N
3, afterburning unit thrust (known prime jet pipe jet speed U2, flow rate m2)
According to law of conservation of energy, in being considered break-even link, can be by (high flow rate × low discharge) through lasing Turn to (low flow velocity × big flow), produce a desired effect, for example, as it is known that kinetic energyPrime thrust F2=m2·U2
The lasing change of current is
Then haveEnergy is unchanged.
Corresponding thrust isNot adding fuel, thrust is amplified ?Times, therefore the passive assistor of meaning.
Data are illustrated:
1. make and entered the air m of rear class mixing chamber 3 by prime jet pipe 2 jet excitation2' flow is m2299 times, both m2'=299m2
2. the air-flow pouring in rear class mixing chamber 3 is min-3=m2’+m2=300m2
3. gross energy is constant,And flow m3=300m2, then must have rear class tail pipe jet speed U4 For
I.e.(deferring to law of conservation of energy)
4. rear class jet pipe 4 jet flow thrust F4
F 4 = m 4 × U 4 = 300 m 2 × U 2 300 = 300 F 2 = 300 × 14310 N = 247856 K N .
The most now jet speed of rear class jet pipe 4
Visible: through this passive afterburning unit back pressure amplification to beTimes.
4, the machine advantage
(A) the most fuel-efficient: oil consumption rate is down toAs used in the description, oil consumption rate of the present invention is WS-10A's on year-on-year basis 14.7%, i.e. with thrust fuel-economizing 85.3%.Aircraft with this device as power, voyage is by for 6.8 times of Boeing-747 on year-on-year basis.
(B) simple in construction cost is low: in the machine without compressor, without gas turbine, be made up of " empty bobbin ", cost is about whirlpool The 6% of fan machine.
(C) stable high safety: without surge, movement-less part abrasion, damage, birds fly into harmless, it was predicted that accident Rate is the 1% of turbofan machine, i.e. safety coefficient improves to 100 times.
(D) movement-less part abrasion, maintenance cost as little as 1%.
(E) life-span is long, can be more than 200,000 engine hours more than.
(F) big thrust loading is up to more than 50, and the aircraft deadweight using such device is lighter, more fuel-efficient.
The above is only that a disclosed new direction external combustion is from ramjet.Should be understood that , for a person skilled in the art, under the premise without departing from the principles of the invention, it is also possible to make some improvement and Retouching, these improvements and modifications also should be regarded as protection scope of the present invention.

Claims (4)

1. an external combustion is from punching jetting power set, it is characterised in that include heating feedback unit and afterburning unit, described in add Thermal feedback unit includes heating chamber, thermal current feedback pipe, prime jet pipe and external combustor, described heating chamber be placed in described outside Putting in combustor, described heating chamber one end is provided with prime air intlet, and the described heating chamber other end is provided with prime air-flow and goes out Mouthful, described prime air stream outlet is connected with the gas feed of described prime jet pipe;The gas feed of described thermal current feedback pipe It is fixedly connected on one end that described heating chamber is corresponding with described prime air stream outlet, the gas outlet of described thermal current feedback pipe It is fixedly connected on one end that described heating chamber is corresponding with described prime air intlet;Described afterburning unit includes rear class mixing chamber With rear class jet pipe, the front end of described rear class mixing chamber is provided with rear class air intlet, the gas outlet of described prime jet pipe The air-flow ejected enters described rear class mixing chamber, and the gas outlet end of described rear class mixing chamber is with described rear class jet pipe even Connect;Gas outlet the thermal feedback air-flow ejected and the sky carried by described thermal feedback air-flow lasing of described thermal current feedback pipe Air-flow mixing enters Hybrid Heating in described heating chamber in the lump, and the portion gas after described oven heats is by described prime Jet pipe sprays and encourages and carries air stream and enter described rear class mixing chamber in the lump, another portion after described oven heats Gas is divided to enter in described thermal current feedback pipe;The air that the air-flow ejected by described prime jet pipe encourages is by after described Level air intlet enters in described rear class mixing chamber, and the gas ejected with described prime jet pipe mixes, and passes through institute afterwards State the ejection of rear class jet pipe, turn to thrust.
External combustion the most according to claim 1 is from punching jetting power set, it is characterised in that the feedback pipe spray of described thermal current The exciting gas of injection carries fresh air and enters the formation of described heating chamber in the lump from punching press, mixing of the porch of described heating chamber That closes gas pours in speed U >=1020m s-1
External combustion the most according to claim 1 and 2 is from punching jetting power set, it is characterised in that in described heating chamber The temperature of air-flow is 2000 ± 200 DEG C.
External combustion the most according to claim 3 is from punching jetting power set, it is characterised in that the material of described heating chamber is Tungsten system or high-temperature ceramics material.
CN201610300759.0A 2016-05-09 2016-05-09 External-combustion self-stamping jet power device Pending CN105952551A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109098890A (en) * 2018-08-24 2018-12-28 李治国 Internal combustion shaped self-starting ramjet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109098890A (en) * 2018-08-24 2018-12-28 李治国 Internal combustion shaped self-starting ramjet

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