https://www.military.com/defensetech/2019/03/14/army-official-previews-timelines-next-gen-vehicles-aircraft.htmlThe U.S. Army may field the first long-range cannons, developed under the new modernization strategy, in just three years, Army Under Secretary Ryan McCarthy said Wednesday.
The Extended Range Cannon Artillery (ERCA), a technology that extends the range of 155mm artillery to 70 kilometers, will be among the first futuristic systems scheduled to be ready for fielding under the Army's top modernization priority -- long range precision fires, he said.
The Army plans to "field some batteries" with ERCA in the "fiscal 2022-2023 time frame," McCarthy told an audience Wednesday at the 10th Annual Defense Programs conference hosted by McAleese and Associates.
"We have gone through some experiments lately where we have reached 70 kilometers with precision," he said. "We are looking at some munitions that industry is in the process of developing, where they say they can go north of 100 kilometers."
McCarthy's comments came a day after the Army released its fiscal 2020 budget request, a spending plan that cuts or kills 186 legacy programs over the next five years to free up funding for the service's six modernization priorities, which include long-range precision fires, a next-generation combat vehicle, future vertical lift, a mobile network, air and missile defense, and soldier lethality.
Ilman ilman vastusta ballistiikka yksinkertaistuu.Tätä voisi ehkä haarukoida esim. näin.
155mm kanuuna ampuu 900m/s lähtönopeudella ilmeisesti noin 30km päähän.
1800m/s lähtönopeudella ammuksella on nelinkertainen kineettinen energia ==> 120km
Lisäksi alikali on verrattoman paljon aerodynaamisempi yliääninopeuksissa. Esim. kerroin 1,3 antaisi 160km kantaman.
Tiedossa on ollut, että tunnet kotimaisen tuotannon hyvin, mutta että näin hyvinTuttu tykkiyksilö 25 vuoden takaa eli 155K83(-97 nykyisin) n:o 8390: