January 7th, 2019 
admin Speculati, voinicii mei!
Speculam, Maria Ta!
Pentru ca am amintit de SCALP in postarea precedenta si a ajuns vorba la ce racheta ar putea aspira sa cumpere Romania – discutia este deci pur aspirationala – trebuie spuse cateva cuvinte despre JASSM. Mai precis cel mai nou membru al familiei adica JASSM-XR (de la “eXtreme Range“, n-au avut alta rima si nici la acronime nu stau mai bine).
Actuala JASSM-ER, pe care Polonia sta cu ochii ca pe butelie (pentru ca si ei au aspiratiilor lor), ar avea o raza de actiune de peste 500nm adica in jur de 1.000km. In Septembrie 2018, Lockheed Martin a primit un contract in valoare de USD51mil pentru a proiecta si testa JASSM-XR, o versiune cu o raza de actiune de 1.000nm adica undeva spre 2.000km.
Principala modificare aerodinamica pe care inginerii LM o vor face pentru a atinge parametrii necesari va fi adoptarea unei noi aripi. Chiar si acceptand o incarcatura de lupta mai redusa, e greu de imaginat cum ar trebui sa arate aripa-minune ce va permite dublarea razei de actiune. Asa ca speculam.
O varianta mai SF – si totusi nu chiar – ar fi aripa oblica. Nu e chiar SF pentru ca se pare ca proiectantii americani de rachete de croaziera au luat-o deja in considerare cu ceva timp in urma:
1989-0985
Si pentru ca nu se poate lasa experienta castigata cu AD-1 sa se piarda:
Aripa oblica ar fi doar o varianta posibila, e foarte probabil sa existe si alte optiuni, asa ca pana la dezvaluirea solutiei adoptate de LM, daca tot nu cumparam nici macar varianta JASSM-vanilie, nu ne ramane decat sa ne uitam in vitrina si sa pariem pe profilul aerodinamic favorit.
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Tot anormalul ala de Burt Rutan 🙂
Ce sa facem noi cu raza de 2000km? Dar 1000? Parca vad iar formularea aia cu balanta de forte in regiune…
Cu 1000 macar traversezi rapid tara dintr-un capat, in celalalt… ca infrastructura de transport rapid nu prea avem, doar lent 🙂
Daca vrem sa cumparam submarine ca sa-i facem pe rusi sa se ingrijoreze de ele nu vad de ce nu am cumpara si JASSM ca sa-i tinem si mai ingrijorati. E aceeasi logica.
nu se cumpara minimul super-ieftin in comparatzie cu sujimarinele lui peshte la cota periscopica
si anume niste nsm sau harpoon sa fie acrosate de pilonii f16
penca super amenintzare si super escaladare asa ca despre ce jassm discutam 🙂
pe principiul asta mai degraba or sa cumpere sujimarinele, ca alea nu amenintza pe nimeni, rusii or sa se declare preocupatzi si in rest o sa li se rupa de sujimarinele romanesti…
Si…
La multi ani! de primul si al doilea comentariu al meu anul acesta 🙂
La Multi Ani!
este extrem de improbabil ca extra rangeul ala sa’l faca din aripi
In September 2018, Lockheed Martin was awarded a contract to develop an “Extreme Range” variant of the AGM-158. The weapon would weigh about 5,000 lb (2,300 kg) and deliver a 2,000 lb (910 kg) warhead out to a range of 1,000 nmi (1,900 km; 1,200 mi); it is planned to be ready by 2023.
si de aici:
http://www.airrecognition.com/index.php/archive-world-worldwide-news-air-force-aviation-aerospace-air-military-defence-industry/global-defense-security-news/global-news-2018/september/4513-us-air-force-moving-forward-with-lockheed-s-jassm-xr-missile-development.html
Lockeed has been working on an “Extreme Range” variant of its AGM-158 JASSM since 2004. The company then entailed a stealthy, 5,000 pound-class weapon that can fly out to 1,000 nautical miles to deliver a lethal payload up to 2,000 pounds precisely on target.
iegzasta o mica mare diferentza de greutate intre JASSM si JASSM XR, practic mai mult decat dubla: 1021 – 450: 571 kile versus 2300 – 910: 1390 kile
adica cel mai probabil mai mult combustibil, acolo o fi cea mai mare parte din diferentza aia de 819 kile
deci nu e nimic esoteric aicishea…
in rest or mai fi dand si din aripi
si or mai face si ca gastele salbatice, zboara in stol in V si aia din capul V’ului mai schimba locul cand oboseste 🙂 🙂
The upgrade includes a new missile control unit computer, “which will support the other planned capabilities,” the spokesman said. These include “new wing designs to increase standoff range through aerodynamic efficiency, and a new GPS unit to further advance our level of protection.”
http://www.airforcemag.com/Features/Pages/2018/September%202018/Lockheed-Martin-Developing-Extreme-Range-JASSM-Variant.aspx
O racheta de doua ori mai mare nu ar mai fi doar un upgrade ci o racheta noua.
rangeurile astea nu se fac batand din aripi…
https://www.popularmechanics.com/military/weapons/a23105106/jassm-xr-cruise-missile-extended-range/
The original JASSM was powered by a Teledyne CAE J402-CA-100 turbojet and had a range of 230 miles. JASSM-ER extended the missile’s range to an estimated 500 miles using a more fuel efficient Williams International F107-WR-105 turbofan engine and larger fuel tanks.
si mai jos despre XR
This probably involves an even larger fuel tank, and perhaps improvements to the inertial navigation system to keep the missile on track.
sau de pe celebra
https://en.wikipedia.org/wiki/AGM-158_JASSM
JASSM-Extended Range
The US Air Force studied various improvements to the AGM-158, resulting in the development of the JASSM-Extended Range (JASSM-ER), which received the designation AGM-158B in 2002. Using a more efficient engine and larger fuel volume in an airframe with the same external dimensions as the JASSM, the JASSM-ER is intended to have a range of over 575 miles (925 km) as compared to the JASSM’s range of about 230 miles (370 km). Other possible improvements were studied but ultimately not pursued, including a submunition dispenser warhead, new types of homing head, and a new engine giving ranges in excess of 620 miles (1,000 km).
deci daca se va ajunge la 2.3 tone sau nu (cum zic unii pe siteuri) n’am de unde sa stiu cacare bate campii sau nu, dar nu dublezi rangeurile doar atarnandu’le niste aripioare…
se face cu mai mult combustibil in tankuri si motoare mai eficiente cacare consuma mai putzin la suta de metri garduri
zii auld uei 🙂
restul cu eficientza aerodinamica o fi pt save the planet
Stiu ce zici si asa ar fi normal insa ei zic ca aripile ar fi cheia, nici un cuvant despre alte schimbari: The US Air Force (USAF) has awarded a contract to Lockheed Martin to develop a new wing design for the Joint Air-to-Surface Standoff Missile – Extended Range (JASSM-ER).
Awarded for continued development of new wing design, the Undefinitized Contracting Action is valued at $37.7m.
The new wing design is expected to increase the range of the cruise missile, which currently has a range of more than 500 nautical miles.
Lockheed Martin Missiles and Fire Control Long Range Strike Systems programme director Jason Denney said: “We’ve developed a novel design that provides additional standoff range to further increase pilot survivability in an Anti-Access-Area Denial threat environment.
https://www.airforce-technology.com/news/newsusaf-awards-new-jassm-er-wing-design-development-contract-to-lockheed-5878104/
Cum preconizeaza unii military americani, in speta Col. John Rafferty, viitorul armelor cu raza lunga:
https://breakingdefense.com/2018/10/army-builds-1000-mile-supergun/
Michael Krepon, cofondator al “Stimson Center” si autor al “Better Safe than Sorry: The Ironies of Living with the Bomb”
“The Pentagon is working on a ground-launched cruise missile, but will have a difficult time finding a basing country in Europe or Asia. Even if Trump can find a taker, this move makes little sense when sea-based and air-delivered options are in play. The Congress would be wise to kill the ground-based cruise missile initiative in R&D.”
https://www.defenseone.com/technology/2018/10/army-missile-might-be-pentagons-first-post-inf-weapon/152354/
Aici as avea o completare, daca Sud-Coreenii garantat vor face scandal(vezi odiseea THAAD), in Europa, din partea Poloniei si Romaniei vor avea loc chiar actiuni de lobby, pt o eventuala desfasurare.
E destul de probabil ca SUA, in conditiile unei flote decente de F15, B-1B si B2, sa ramana la versiunile de arme cu raza mai lunga, deja stiute, aeropurtate si navale.
Insa daca unii analisti, iau ca reper zona Peninsulei Coreeana sau Europa de Est, mai exista si Iran. Recentele progrese ale acestora in contructia de rachete cu raza de 6-700 km, precum si precizia din ce in ce mai crescuta a acestora( simtita de liderii kurzi din Koya, Irak, pe propria piele in 9.09.2018, cand o racheta iraniana a lovit cladirea in care se intruneau, provocand 17 victime si multi raniti), ar da sens amplasarii unor lansatoare tereste in Arabia Saudita. Rebelii Houthi au lansat o racheta iraniana asupra Riad-ului, de la 900 km, ceea ce nu nu e chiar de neglijat.
Recent, “Iranian missile has been retrofitted with “active seeker” technology to better detect ships at sea. In mid-August, Iran test-fired one of these missiles against a ship.”
Asa ca, Iranul va primi mai multa atentie, decat a avut parte pana acum.
Nu cred ca va mai fi chiar asa de simplu, cel putin cu lobby-ul romanesc, pentru ca astea chiar sunt arme ofensive cu bataie lunga si nu mai merge cu gargara si eschivele de la scutul antibalistic terestru.
Sunt destui “daca” in ecuatie, dar ca sa il citez din nou pe Col. John Rafferty:
“We’re going to play by the rules until we’re told the rules have changed. That’s our approach on the team and the guidance from senior leaders”
…si a spus asta, cu 2 saptamani inainte National Security Advisor, John Bolton, sa ii alerteze pe aliati ca Administratia Trump, vrea sa se retraga din INF.”
In functie de cum vor gestiona rusii situatia, vom vedea si raspunsul american. Doua declaratii mai jos care creioneaza o abordare:
Greg Weaver, the Joint Staff’s deputy director of strategic capabilities:
“We need to demonstrate to the Russians that we’re serious about them coming back into compliance with INF and that perhaps they need to be reminded why they signed the INF treaty in the first place.
Solely doing research on a new missile will keep us within the four corners of the treaty—for now—while also signaling to Russia that we won’t abide by their aggression”
Inca, la vremea respectiva Secretarul Apararii, James Mattis:
“What we’re trying to do is ensure our diplomats and our negotiators are in a position to be listened to and say: We want to go forward on non-proliferation and arms control.
At the same time, you do so by having an effective, safe deterrent.”
Noi nu suntem in ecuatia asta, dar “daca” vom fi rugati, oare care va fi raspunsul?