Hopper was a proposed ESA RLV spaceplane. (A sub-scale test craft, Phoenix, is discussed in http://www.secretprojects.co.uk/forum/index.php/topic,11170.0.html.)
Robert Goehlich proposed a space tourism variant of Hopper called Hopper Plus. This is described in:
Goehlich, R.A. & Ruecker, U. (2003). "Life-cycle Program Proposal for a Commercial Tourist RLV Fleet Operated from Kourou Spaceport," presented at the 3rd International Symposium on Atmospheric Reentry Vehicles and Systems, Arcachon, France.
Some figures from the paper are attached. Characteristics of the vehicle and it's flight profile are:
[quote author=http://www.robert-goehlich.de/files/Tourist%20RLV%20Fleet%20(R.A.%20Goehlich,%20Arcachon,%202003).pdf]
Flight Profile
Hopper Plus would start horizontally on a rail sled at Kourou Spaceport on a 4 km long track. For simplicity of operations, the rail sled would be unpowered. Its design is similar to the emergency acceleration system of the German maglev high-speed train Transrapid currently operated in China. Three rocket main engines would accelerate Hopper Plus to a height of 100 km. Then it would drift to a maximum height of 150 km before it would reenter in the atmosphere and land horizontally 4500 km downrange on a runway [...] Total flight time would be around 30 minutes, of which 5 minutes are in weightlessness.
[...]
Vehicle
Overall length of Hopper Plus is assumed 50 m with a wingspan of 27 m as shown in Figure 4. Its gross lift-off weight would be 460 Mg including the passenger module. Hopper Plus might make widely use of Ariane 5 technology and elements, thus becoming within reach for midterm realization. It would use three Vulcain 3R engines, which are Vulcain 3 engines adapted to reusability.
[...]
Passenger Module
Cargo bay dimensions are supposed to be Ø5,4 m x 16,7 m. For comparison, Figure 5 shows an aircraft cabin arrangement for high density seating with similar dimensions allowing to transport 50 passengers (5 x 10 rows) with same dimensions. Because of higher standard of space applications and more comfort for passengers a 4 x 8 rows arrangement is used for the scenario. Passenger module dimensions might be Ø4,7 m x 16,0 m and it would have a dry mass of 3,8 Mg. Usable volume per passenger would be about 4 m³. It includes cabin structure (2,0 Mg), 30 passenger seats (1,0 Mg), 2 stewardess seats (0,1 Mg), 1 toilet (0,1 Mg), an environmental control system (0,5 Mg), and a 3,0 m long compartment for zero gravity experience for passengers (0,1 Mg).
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