found on NTRS somethingsAIAA PAPER 91-0842Conference Paper Liquid booster engine reuse - A recovery systemAccession Number: 91A32162Document ID: 19910047539 Jan 01, 1991 by Von Eckroth, Wulf and Rohrkaste, Gary R. and Delurgio, Phillip R.Sadly no PDF at NTRS.Summary: QuoteThe paper presents the design of a recovery system for a suborbital payload of an Atlas E rocket. This program utilizes off-the-shelf and previously qualified avionics, flotation, and decelerator systems. A brief history of liquid-engine recoveries is presented first, then the system design utilizing two self-contained structurally-identical pods diametrically mounted to the thrust section is outlined. A mortar-deployed drogue and the main parachute are described, and experimental procedures are considered. Data obtained from one tricluster drop employing a cylindrical test vehicle and helicopter is analyzed, and a satisfactory load balance between the parachutes is observed.
The paper presents the design of a recovery system for a suborbital payload of an Atlas E rocket. This program utilizes off-the-shelf and previously qualified avionics, flotation, and decelerator systems. A brief history of liquid-engine recoveries is presented first, then the system design utilizing two self-contained structurally-identical pods diametrically mounted to the thrust section is outlined. A mortar-deployed drogue and the main parachute are described, and experimental procedures are considered. Data obtained from one tricluster drop employing a cylindrical test vehicle and helicopter is analyzed, and a satisfactory load balance between the parachutes is observed.
Gambit-1 accounted for 28 launches including 2 failures. GATV flew 6 times, with two frustrating launch failures but also scored the first orbital docking missions with Gemini. Five highly successful Lunar Orbiters were launched for NASA without a hitch. Midas/RTS-1 flew three times, advancing missile detection technology despite one ending up in an unplanned elliptical orbit. Three ATS launches were performed for NASA, with one falling short of a full GTO due to an Agena failure. Mariner 5 was successfully launched toward Venus on the final Mariner/Agena flight.
In 1960, Convair studied an upgraded Atlas "F" ICBM that would have used two Rocketdyne "H-2" booster engines, each producing 250 Klbf thrust, together providing a good 200 Klbf more liftoff thrust than then-existing Atlas ICBMs.
Quote from: edkyle99 on 10/01/2015 03:07 amIn 1960, Convair studied an upgraded Atlas "F" ICBM that would have used two Rocketdyne "H-2" booster engines, each producing 250 Klbf thrust, together providing a good 200 Klbf more liftoff thrust than then-existing Atlas ICBMs.Could I ask what the source is for this? Is it available? I'm interested principally because of the mention of the H-2, which has been discussed in other threads.
OTD 15 yrs ago, Feb. 3, 2005, a corkscrew streak: The 6th & last Atlas 3 + last Atlas from Pad 36, it rose out of dense fog and took an unusual path to a 63-deg incl. to deliver a classified NRO payload! The AF wx forecast was 95% no go that eve. More: launchphotography.com
Ed, I was looking for something else recently, and I came across an image on the SDASM flickr account that does a couple of things. It names the version of Atlas put forward as a part of the CELV as "Atlas L" (as in LIMA), and it shows two growth options - one using shuttle solids as boosters, and the other that takes this boosted version, and converts it to a hydrolox core with J-2s.
I found this on X (Twitter) Atlas with liquid boosters sadly no source info
Quote from: Michel Van on 08/29/2023 05:29 pmI found this on X (Twitter) Atlas with liquid boosters sadly no source info Since the rocket engines for the rocket in this drawing are labeled as RS-27s, and the RS-27 engine was developed in the 1970s, so the Atlas shown in the drawing could be an 1980s precursor design for the Atlas II.
Quote from: Vahe231991 on 08/29/2023 07:53 pmQuote from: Michel Van on 08/29/2023 05:29 pmI found this on X (Twitter) Atlas with liquid boosters sadly no source info Since the rocket engines for the rocket in this drawing are labeled as RS-27s, and the RS-27 engine was developed in the 1970s, so the Atlas shown in the drawing could be an 1980s precursor design for the Atlas II.this isn't an Atlas II (either version 3m or 5m).
Hi Jim,I just noticed that the image in reply #232 is from the 1994 book The Future of U.S. Rocketry by Edward Hujsak. Given that this book was published two years after the first launch of the Atlas II, I can only speculate that the rocket in this drawing could be a 1990s design study for a proposed heavy-lift Atlas design.
So is this any good?http://www.amazon.com/Lightning-Bolts-William-Yengst/dp/1615665471/ref=pd_sim_14_3?ie=UTF8&refRID=0Y5EHBEGP3S992JN3EX4
Quote from: Blackstar on 05/22/2015 10:35 pmSo is this any good?http://www.amazon.com/Lightning-Bolts-William-Yengst/dp/1615665471/ref=pd_sim_14_3?ie=UTF8&refRID=0Y5EHBEGP3S992JN3EX4For sure.