Millistes Ukraina piirkondades on mustmullad kõige levinumad?
Reeglina on need stepivööndi piirkonnad: Donetski, Luganski, Zaporožje, Harkovi, Dnepropetrovski ja Kirovogradi piirkonnad koos Musta mere ja Aasovi piirkondadega.
Mustmullavööndi mullad
Asukoht: riigi metsa-steppide ja steppide vööndid.
Huumuskihi paksus on kuni 150 cm.
Huumuse sisaldus - kuni 60,5%.
Millest koosneb mustmullavööndi pinnas?
- pinna pealmine horisont on huumust akumuleeriv kiht. Selle paksus võib olla vahemikus 35–120 cm, mõnel juhul isegi rohkem, värvus on küllastunud tumehall (peaaegu must - sellest ka seda tüüpi pinnase nimi). Struktuur on erineva teralisusega.
- selle all on üleminekuhorisont, pruunika heterogeense värvusega, milles leidub huumuse lisandeid. Seda horisonti iseloomustab jämedam tükiline struktuur.
- üleminekuhorisondi all on illuviaal-karbonaatkiht. Sellel on selgelt väljendunud prismaatiline struktuur, pruunikaskollakaspruun värvus ja madalamal horisondil muundub see valkjaks mulda moodustavaks algkivimiks soola, kipsimoodustiste ja karbonaatsete elementidega.
Mustmullavööndi muldade tüübid
Neid muldasid eristab pealmise huumushorisondi paksus. Selles mõttes eristatakse nelja tüüpi muldasid:
- ülipaksud. Nendel maadel võib huumuskuhjuva kihi paksus olla umbes 120 cm, mõnel juhul isegi rohkem (150 cm).
- paksud. Need mullakihid on vahemikus 80–120 cm.
- keskmise paksusega. Sellisel juhul võib huumuse akumulatsioonihorisondi paksus varieeruda 40–80 cm piires.
. .- üleminekuhorisont, pruun, huumustriibuline, tükiline-prismaatiline struktuur, haruldased gleis- ja roostetäpid, paksusega 20–50 cm;
- karbonaathorisont 50–70 cm paksune, valkjas-helepruun, tihenenud, prismakujuline struktuur, karbonaadisademetega ;
- aluspinna moodustav aluskiht, helepruun, lahtine, struktuuritu, karbonaatne, sageli liimjas.
https://www.geokniga.org/bookfiles/geok ... grozan.pdf
https://agrofermer.com/blog/typy-gruntiv/
https://him-element.com.ua/ru/news/65?id=65
https://bigenc.ru/c/lugovo-kashtanovye-pochvy-1d8c1e
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Kütusekulust rääkides, siis kusagil ukrainlased kurtsid, et seda kütust mida neil saada on ja sisse valati, pidavat Abrams veel rohkem neelama kui USA MIL standardi kütuseid. Ei leia praegu üles, millal ja kus see oli.
Ingliskeelne Wiki räägib, et 2000 telliti/pandi AGT1500 mootori asemel uus LV100-5 mootor, mis võtab vähem kütust.
Jällegi, kas keegi oskab kommenteerida, millise mootoriga tankid sai Ukraina?The tank was built around this engine and it is multifuel-capable, including diesel, gasoline, marine diesel and jet fuel (such as JP-4 or JP-8). In the AGT1500, jet fuel has poorer fuel economy and operating range compared to diesel. By 1989, the Army was transitioning solely to JP-8 for the M1 Abrams, part of a plan to reduce the service's logistics burden by using a single fuel for aviation and ground vehicles. However, as of 2023, the U.S. Army frequently refuels the Abrams with diesel, which is also used by the Bradley Fighting Vehicle. The Australian M1A1 AIM SA burns diesel fuel, since the use of JP-8 is less common in the Australian Army.[citation needed]
The gas turbine propulsion system has proven quite reliable in practice and combat, but its high fuel consumption is a serious logistic problem. The engine burns more than 1.67 US gallons per mile (392 Liters/100 km)
In 2000, the Army selected the gas turbine engine LV100-5 from Honeywell and subcontractor General Electric. The new LV100-5 engine was lighter and smaller (43% fewer parts) with rapid acceleration, quieter running, and no visible exhaust. It also featured a 33% reduction in fuel consumption (50% less when idle) and near drop-in replacement.
https://en.wikipedia.org/wiki/M1_Abrams
Siin räägitakse üksnes, et UKR sai M1A1 tankid, seega Honeywell AGT1500 mootoriga?
https://www.businessinsider.com/how-ukr ... us-2023-10
Samas, kas mõne "upgrade"-ga on pandud A1M1 tankidele ka LV100-5 mootoreid?
Kütusekulu kohta tehti 1989 analüüs kus võrreldi DF-2 ja JP-8 kütuseid ning nende kulu erineva tehnikaga.Instead of new production, the Army has a requirement to upgrade over 1,100 older M1 tanks to the M1A2 configuration. A multiyear procurement for 600 M1A2 upgrades, awarded in July 1996, are in their fifth year of deliveries. Further M1A2 improvements, called the Systems Enhancement Package (SEP), are underway.
Abramsi puhul siis AGT1500 mootoriga.
https://apps.dtic.mil/sti/tr/pdf/ADA216275.pdf
1991 tuli välja aruanne
ABRAMS TANK
Operating Costs More Than Expected
https://www.gao.gov/assets/nsiad-91-114.pdf
Seal on välja toodud muuhulgas :
2002Army Has Implemented Cost Reduction Efforts
A More Durable Track : The poor durability of the Abrams tank track has been a key contributor to the high cost of its maintenance.
Reducing Fuel Usage : Fuel consumption has been a continuing concern since the M1 tank was fielded.
Auxiliary Power unit : The Army may install a small auxiliary power unit (APU) onto the rear of the Abrams tank.
Engine Itecuperdtor : The Army has experienced poor reliability of the Abrams engine recuperator.
Improving Fault Diagnosis : The Army has developed a new diagnostic test set for use on Army weapons systems.
Abrams Tank ReadinessRates Are High but W ith Many Reporting Exceptions.
Cost savings associated with the LV 100-5 tank engine
https://core.ac.uk/download/pdf/36699742.pdf