±Recent Visitors

Recent Visitors to Com-Central!

±User Info-big


Welcome Anonymous

Nickname
Password

Membership:
Latest: HighestAce
New Today: 0
New Yesterday: 0
Overall: 6648

People Online:
Members: 0
Visitors: 394
Total: 394
Who Is Where:
 Visitors:
01: Community Forums
02: Home
03: Home
04: Photo Gallery
05: Community Forums
06: Home
07: Home
08: Home
09: Home
10: Member Screenshots
11: Home
12: Home
13: Home
14: Community Forums
15: Your Account
16: Photo Gallery
17: Community Forums
18: Community Forums
19: Community Forums
20: News Archive
21: Community Forums
22: Home
23: Home
24: Home
25: Home
26: Home
27: Photo Gallery
28: Home
29: Home
30: News Archive
31: Home
32: Home
33: Member Screenshots
34: Member Screenshots
35: Community Forums
36: Home
37: Community Forums
38: Community Forums
39: Home
40: Community Forums
41: News Archive
42: News Archive
43: Home
44: Community Forums
45: Home
46: Home
47: Home
48: Photo Gallery
49: News Archive
50: Community Forums
51: Community Forums
52: Member Screenshots
53: Member Screenshots
54: News Archive
55: Community Forums
56: Home
57: Home
58: Home
59: Community Forums
60: Member Screenshots
61: Downloads
62: Home
63: Home
64: Community Forums
65: Members List
66: Community Forums
67: Community Forums
68: Member Screenshots
69: News
70: Community Forums
71: Home
72: Home
73: Community Forums
74: Home
75: Home
76: Community Forums
77: Home
78: Community Forums
79: Search
80: Member Screenshots
81: Community Forums
82: Community Forums
83: Home
84: Home
85: Photo Gallery
86: Community Forums
87: Home
88: Community Forums
89: Downloads
90: Home
91: Community Forums
92: Home
93: Home
94: Community Forums
95: Home
96: Downloads
97: Community Forums
98: Home
99: Downloads
100: Community Forums
101: Home
102: Community Forums
103: Home
104: Home
105: Community Forums
106: Community Forums
107: Community Forums
108: Community Forums
109: Home
110: Home
111: Home
112: Home
113: Community Forums
114: Downloads
115: Home
116: Home
117: Community Forums
118: Community Forums
119: Home
120: Home
121: Downloads
122: Community Forums
123: Home
124: Member Screenshots
125: Community Forums
126: Community Forums
127: Community Forums
128: Home
129: Community Forums
130: Community Forums
131: Home
132: Treasury
133: Home
134: Community Forums
135: Photo Gallery
136: Home
137: Photo Gallery
138: Home
139: Community Forums
140: Community Forums
141: Community Forums
142: Community Forums
143: Home
144: Home
145: Search
146: Community Forums
147: Home
148: Community Forums
149: Downloads
150: Photo Gallery
151: News Archive
152: Community Forums
153: Community Forums
154: Community Forums
155: Community Forums
156: Member Screenshots
157: Photo Gallery
158: Home
159: Home
160: Home
161: Your Account
162: Member Screenshots
163: Community Forums
164: Home
165: Home
166: Community Forums
167: Statistics
168: Community Forums
169: Member Screenshots
170: Photo Gallery
171: Home
172: News Archive
173: Member Screenshots
174: Home
175: Community Forums
176: Community Forums
177: Photo Gallery
178: Photo Gallery
179: News Archive
180: Member Screenshots
181: Community Forums
182: Member Screenshots
183: Home
184: Community Forums
185: Community Forums
186: Community Forums
187: Community Forums
188: Home
189: Home
190: Home
191: Community Forums
192: Home
193: Home
194: Community Forums
195: Home
196: Downloads
197: Community Forums
198: News
199: Home
200: Photo Gallery
201: Community Forums
202: Community Forums
203: Community Forums
204: Home
205: Community Forums
206: News
207: Community Forums
208: Home
209: Home
210: News Archive
211: Home
212: Home
213: Community Forums
214: Community Forums
215: Community Forums
216: Community Forums
217: Home
218: Community Forums
219: Community Forums
220: Home
221: Home
222: Photo Gallery
223: Community Forums
224: Community Forums
225: Home
226: Community Forums
227: Downloads
228: News Archive
229: Photo Gallery
230: Member Screenshots
231: Home
232: Member Screenshots
233: Statistics
234: Home
235: Community Forums
236: Home
237: Photo Gallery
238: Downloads
239: Home
240: Photo Gallery
241: Member Screenshots
242: Home
243: Community Forums
244: Photo Gallery
245: Photo Gallery
246: Home
247: Community Forums
248: Home
249: Community Forums
250: Community Forums
251: Home
252: Community Forums
253: Community Forums
254: Community Forums
255: Community Forums
256: News
257: Home
258: Community Forums
259: Downloads
260: Home
261: Your Account
262: Home
263: Community Forums
264: Photo Gallery
265: Community Forums
266: Your Account
267: Home
268: Community Forums
269: Home
270: Home
271: Member Screenshots
272: Community Forums
273: Home
274: Community Forums
275: Home
276: Home
277: News
278: Supporters
279: Home
280: Downloads
281: Community Forums
282: Statistics
283: Community Forums
284: Statistics
285: Home
286: Community Forums
287: Community Forums
288: Community Forums
289: Community Forums
290: Community Forums
291: Home
292: Home
293: Community Forums
294: Home
295: Community Forums
296: Community Forums
297: Community Forums
298: News Archive
299: Community Forums
300: Downloads
301: Home
302: Photo Gallery
303: Community Forums
304: Community Forums
305: Your Account
306: Home
307: Community Forums
308: Community Forums
309: Home
310: Community Forums
311: Photo Gallery
312: Home
313: Member Screenshots
314: Downloads
315: Community Forums
316: Home
317: Community Forums
318: Community Forums
319: Downloads
320: Community Forums
321: Community Forums
322: Home
323: Statistics
324: Downloads
325: Home
326: Community Forums
327: Community Forums
328: Community Forums
329: Home
330: Home
331: Community Forums
332: Community Forums
333: Community Forums
334: Community Forums
335: Home
336: Photo Gallery
337: Home
338: Community Forums
339: Home
340: Home
341: Community Forums
342: Community Forums
343: Your Account
344: Home
345: Home
346: Home
347: Home
348: Downloads
349: Community Forums
350: Photo Gallery
351: Community Forums
352: Community Forums
353: Community Forums
354: Downloads
355: Member Screenshots
356: Community Forums
357: Home
358: Community Forums
359: Community Forums
360: Member Screenshots
361: Community Forums
362: News Archive
363: Community Forums
364: Home
365: Home
366: Community Forums
367: Community Forums
368: Community Forums
369: Downloads
370: Community Forums
371: Community Forums
372: Downloads
373: Photo Gallery
374: Community Forums
375: Home
376: Community Forums
377: Home
378: Community Forums
379: Photo Gallery
380: Home
381: Community Forums
382: Home
383: Community Forums
384: Community Forums
385: Community Forums
386: Member Screenshots
387: Community Forums
388: Community Forums
389: Community Forums
390: Community Forums
391: Community Forums
392: Community Forums
393: Home
394: Community Forums

Staff Online:

No staff members are online!
MBT70
The AFV ASSOCIATION was formed in 1964 to support the thoughts and research of all those interested in Armored Fighting Vehicles and related topics, such as AFV drawings. The emphasis has always been on sharing information and communicating with other members of similar interests; e.g. German armor, Japanese AFVs, or whatever.
Post new topic    Reply to topic    Printer Friendly Page     Forum Index ›  AFV News Discussion Board

View previous topic :: View next topic  
Author Message
ChrisC
Power User

Offline Offline
Joined: Jan 26, 2006
Posts: 147

PostPosted: Sat Apr 11, 2015 1:28 am
Post subject: MBT70

Can anyone tell me what I have here? These came into the museum and we are trying to get some background on them. Many look MBT70 ish














Back to top
View user's profile Visit poster's website
3R22R
Power User

Offline Offline
Joined: Dec 22, 2006
Posts: 32
Location: Ste-Agathe des Monts QC
PostPosted: Sat Apr 11, 2015 3:46 am
Post subject: Re: MBT70

Top right and bottom left look M60A2 (ish)!

_________________
Guy
Back to top
View user's profile Send e-mail
Rick_Eshleman
Power User

Offline Offline
Joined: Apr 26, 2011
Posts: 909
Location: Lewes, Delaware, USA
PostPosted: Sat Apr 11, 2015 10:23 am
Post subject: Re: MBT70

Concepts. #63 looks like an MBT-70, #62 looks like an atomic (engine) tank, the next two (couldn't see any numbers) look like M60A2 pilots, next one seems like another atomic tank, last one another M60A2 type. All M60A2 types seem to have T95 Tank type suspensions. These drawings seem very much like Questionmark IV conceptual drawings. I made a copy of Questionmark IV that I found at MHI, Carlisle, PA 30 years ago. If I can find it I'll see if any of these drawings are in it. Rick
Back to top
View user's profile Send e-mail AIM Address Photo Gallery
Andrei
Power User

Offline Offline
Joined: Feb 05, 2006
Posts: 81

PostPosted: Thu Jan 13, 2022 4:26 pm
Post subject: Re: MBT70

Any news on these projects?


This one looks very interesting, maybe it is continuation of Questionmark III nuclear tank concepts? Any news on it after many years?


About this one -



Also the design is close to the Rheems "Hunter" ideas with conventional gun installed and driver moved to the hull center (after the turret)



Last edited by Andrei on Fri Jan 14, 2022 2:53 pm; edited 4 times in total
Back to top
View user's profile
Andrei
Power User

Offline Offline
Joined: Feb 05, 2006
Posts: 81

PostPosted: Thu Jan 13, 2022 4:28 pm
Post subject: Re: MBT70

- ChrisC
Can anyone tell me what I have here? These came into the


What is the year of these presentation?
Back to top
View user's profile
JiriTintera
Power User

Offline Offline
Joined: Jun 21, 2007
Posts: 218
Location: Prague, Czech Republic
PostPosted: Mon Jan 17, 2022 9:27 am
Post subject: Re: MBT70

Dear colleague,
information about the tank "The Hunter" was once provided by the late Dontos.
Link:
www.com-central.net/in...&view=next
Back to top
View user's profile Send e-mail Visit poster's website
Andrei
Power User

Offline Offline
Joined: Feb 05, 2006
Posts: 81

PostPosted: Fri Feb 04, 2022 4:15 pm
Post subject: Re: MBT70

Back to top
View user's profile
Andrei
Power User

Offline Offline
Joined: Feb 05, 2006
Posts: 81

PostPosted: Mon May 30, 2022 7:53 am
Post subject: Re: MBT70

FROM: GEN PALMER VCSA WASH DC

TO: GEN POLK CINCUSAREUR HEIDELBERG GER



SUBJECT: MBT-70 (U)

(U) Reference HBG 1865

DA Staff conclusions not yet ready on questions raised by Colonel Baltes regarding

MBT-70/XM803; however, the following constitutes an interim response:

a. Automatic Loader. The 700-round life for the automatic loader applies only to the R&D models. The APE (second generation) loaders, will incorporate all the knowledge gained from the R&D version and should have a life approaching 1500 rounds. At that point (1500 rounds) the loader would be removed from the tank, inspected, and selected parts, such as the rammer head and rammer chain, replaced as necessary. Since the required life of the gun tube is 500 effective-full-charge rounds (equivalent to firing 500 kinetic-energy rounds) or 1000 missiles, it can be expected that the loader inspection and repair will coincide with gun tube replacement. It should also be noted that, in peacetime, most tanks will complete a 6000-mile overhaul cycle without firing 1500 rounds.



b. Overhaul Criterion. The 6000-mile overhaul criterion for the MBT-70 was established several years ago. At that time, the overhaul criteria for the M60 and M48 series tanks was 5000 miles. A 6000-mile criteria for a more complex vehicle such as the MBT-70 was, therefore, considered a significant improvement. The M60 and M48 overhaul criteria has recently been extended to 6000. This extension is made possible by the use of a thorough mid-life service. It may be possible to extend the cycle of the MBT-70/XM803 by a similar mid-life service. However, this cannot be deter­mined at this point in the development cycle. To change the requirement for the MBT-70/XM803 at this time, would necessitate that the component reliability goals be raised, thereby increasing the cost of the tank.



c. Ammunition. The problems associated with combustible case ammunition have not been completely solved, but have been reduced to an acceptable level. In fact, the combustible case in some aspects is superior to the metal case. The ballistic compatibility between the XN411 TPT round and the XN409 HEAT round is not exact, but is so close that the TPT round can be fired from the SHERIDAN using the XM409 sight reticle. The MBT-70 firings at Aberdeen have been done with the XM411 round using the computer set for the XM409 round. In spite of any slight incompatibility, hit probability specifica­tions have been exceeded. Concerning the XM578 APFSDS round, firings of the new modification A’S rounds are underway at Aberdeen. The testing and development schedule for the XM578 are compatible with MBT-70/XM803 develop­ment schedule.



d. Ballistic Protection. The MBT-70 QMR requires frontal ballistic protection against the US/UK 105mm APDS at 800 meters and all-round pro­tection against 14.5mm at zero range. The revised Joint Military Characteristics used in defining the “austere” MBT specified 800-meter frontal protection against Soviet 115mm APFSDS. This change was made because the penetration capability of the two rounds was thought to be comparable. Further investigation, however, indicates that definitive data (upon which everyone agrees) is not available for the Soviet 115mm round. Thus, a test criteria based on 115mm APFSDS cannot be established. USAMC has recommended that the revised MBT-70/XM803 QMR, due for submission to DA on 1 Jun 70, reflect US/UK 105mm APDS rather than the Soviet round. Protection against the current US/UK 105mm APDS round has been achieved at 800 meters through the use of spaced-armor. Invulnerability to Soviet HEAT round based on armor protection alone is not feasible. External arrays such as side skirts (which are being planned for MBT-70/XM803) and bar armor (which at this time is not being considered) would reduce the likelihood of jet penetration of the main armor.



e. Fuel Storage. Colonel Baltes appears to have confused two separate items concerning the removal of nuclear shielding and fuel storage. By agreement with the FRG, the internal boron nuclear shielding was removed from the МВТ in order to save approximately 4400 lbs in weight. There are no plans to store fuel in the spaced-armor of the turret where the shielding was removed. There was a plan to store fuel in the spaced-armor at the front of the hull in order to achieve the 400-mile cruising range specified in the original QMR. Since USACDC has agreed to reduce the cruising range to 325 miles, this additional fuel is not required and plans to store fuel within the spaced armor have been dropped.



f. Secondary Armament. Interim position regarding the secondary armament has not been reached. An essential consideration is that the silhouette of the tank be kept low. In addition to retaining present cal .50 mount on top of commander’s day/night sight, other alternatives being considered are: deletion of secondary armament, use of pintle mounted cal .50,"use of pintle mounted 7.62mm machinegun, and use of a cal .50 as an additional coaxial machinegun in conjunction with any of the preceding.



g. Human Engineering Factors. Human Engineering Factors are being thoroughly considered not only by the contractor but by the Human Engineering Laboratory and by the Armor Center Team. Detailed reviews of both mockups and pilot hardware have been conducted.
Back to top
View user's profile
Andrei
Power User

Offline Offline
Joined: Feb 05, 2006
Posts: 81

PostPosted: Mon May 30, 2022 10:33 am
Post subject: Re: MBT70

Something very strange from 70-s - maybe sommeone knows any details on this turret?
Back to top
View user's profile
Doug_Kibbey
Power User

Offline Offline
Joined: Jan 23, 2006
Posts: 4678
Location: The Great Satan
PostPosted: Tue Jun 14, 2022 10:08 pm
Post subject: Re: MBT70

Do you have a date for that MBT-70 document? The XM-409 issue in particular was not limited to the combustible case, but also (and more seriously in their perception) to premature detonations. Usually in-tube. This was for sure being observed as late as 1969 even as they moved to standardize the system.
Ridiculously, the definition of "catastrophic failures" during gunnery included only failures that occurred after the trigger was pulled. This was reflected in the Catastrophic Event Probabilities with regard to gunnery.
Back to top
View user's profile Visit poster's website Photo Gallery
Display posts from previous:   
Post new topic    Reply to topic    Printer Friendly Page    Forum Index ›  AFV News Discussion Board
Page 1 of 1
All times are GMT - 6 Hours



Jump to:  


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum