![]() |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
![]() wrote: Probably a modified D-21 for air-launch from a SR-71 at Mach 3+ Reason: 1. Size - Around the solids we see strong black "rings" fasten them to the main body. The thickness of this rings make only sence if we see a close to scale model. Maybe even 1:1 or 3 but not 5. Otherwise the rings would be smaller at an acurate tunnel modell. Therefore the size is in the D-21 range. 2. Asymetric solids. The 3 or 4 solids are asymetric around the body to allow a clear underside. Thats a disadvantage for the D-21 but a save feature for the SR-71 mother. 3. Small solids. The solids are much to small to get it to ramjet ignition speed from Mach 1 or below. - Probably launch by SR-71 Put together, the four solids would have more capacity than the big single booster actually used to launch the D-21 from the B-52 that replaced the SR-71 as the launch aircraft after the mid-air collision of the M-12 and D-21 right after launch. Here's that booster: http://www.wvi.com/~sr71webmaster/d21b33.jpg Fine image. The solid from the B-52 launch is in diameter and lenght about the size of the D-21 main body. The 4 solids in the tunnel I estimate each to about 1/4 diameter of the body. Assuming same lenght and impulse proportional volume this 4 only give somewhat 25 % speed gain compared to B-52 solid. Maybe from Mach 3 to Mach 4, but not from 0.8 to 3. Note that the intake on the mystery what's-it has a much wider gap between the center-cone and interior of the intake lip than the D-21; indicating that has much higher needed airflow, or the air it's traveling through is much thinner. Yep. If you abandon the wings I would expect the new optimal cruise altitude somewhat higher. That could explain the need for 4 solids were 2 would suffice for seperation. And about this ring-cone. I think it has some controll function too as this UAV has no fins. From size and shape it could well interact with the Mach cone. ## CrossPoint v3.12d R ## |
Thread Tools | |
Display Modes | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Mystery space ramjet booster looking thing. Any ideas? | Scott Ferrin | History | 24 | November 15th 07 11:48 PM |
Mystery booster | Pat Flannery | History | 2 | August 2nd 06 01:22 AM |
Alternative access to space ideas, etc. | Jon S. Berndt | Policy | 6 | November 6th 05 12:52 AM |
APR Extras: Little Joe 2-LEM, Ejector Ramjet X-15 | Scott Lowther | History | 6 | December 13th 04 06:39 AM |
APR Extras: Little Joe 2-LEM, Ejector Ramjet X-15 | Scott Lowther | Policy | 0 | December 12th 04 09:33 PM |